wild river damdata.dnrm.qld.gov.au/eap/wild-river-eap.pdf · 2019-12-04 · safety report...

DAM ID 1198

VERSION 7 – JULY 2019

Confidential and Proprietary Information This document contains information that is proprietary to Tablelands Regional Council. Transmittal, receipt, or possession of this document does not express license, or imply rights to use, sell, design, manufacture, or to have manufactured, any product, concept, or service from this information. No reproduction, publication, or disclosure of this information, in whole or in part, electronic or otherwise, shall be made without prior written authorization of an officer of Tablelands Regional Council.

Authorised transfer of this document from the custody and control of Tablelands Regional Council constitutes a loan for limited purpose(s), and this document must be returned to Tablelands Regional Council upon request, and in all events, upon completion of the purpose(s) of the loan.

Wild River Dam

EMERGENCY ACTION PLAN

WIDTJ

Text Box

Approved by the delegate of the Chief Executive, Department of Natural Resources, Mines and Energy until 1 September 2023


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DOCUMENT CONTROL SHEET

CONTROLLED COPY NUMBER: AUTHORISATION:

Approved by: ..... ..................................................................................... (M r Water and Waste Tablelands Regional Council)

Date: 19 / 09 / 2019

Draft: Final: Version: 7

File Ref: Author:

Date Submitted: 18 September 2019 Review Date: July 2019

DOCUMENT REVISION HISTORY

Version Date Officer Name Change Summary

1 September 2013 Re-written with new DNRME requirements

2 October 2014 Outcomes of Failure Impact Assessment and Dam Safety Report undertaken by SKM in December 2013 and March 2014 respectively.

3 November 2014 Amendments made to document as requested by DNRME

4 September 2015

2015 Review & Update (REVA)

5 December 2017 2017 Review & Update – Approval until 1 November 2018

6 July 2018 2018 Review & Update

7 July 2019

2019 Review and Update to address Matters of Concern

7 July 2019 Finalised

7 September 2019

Review comment updates, Local Government Notice to Dam Owner insertion and Manager Water and Waste authorisation to release.


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CONTENTS Chapter-Page 1. INTRODUCTION ................................................................................................................... 1-1

1.1 Purpose ..................................................................................................................... 1-1 1.2 Wild River Dam .......................................................................................................... 1-1 1.3 Failure impact assesment .......................................................................................... 1-4

2. CONTROL COPY AND NOTIFICATION LIST ..................................................................... 2-1

3. ROLES AND RESPONSIBILITIES ...................................................................................... 3-1 3.1 TRC Roles ................................................................................................................. 3-1

3.1.1 EAP Officer ................................................................................................................ 3-2 3.1.2 EAP Backup Officer and Maintenance Officers ......................................................... 3-2 3.1.3 Manager Water and Waste ........................................................................................ 3-2 3.1.4 Tablelands Local Disaster Coordinator ..................................................................... 3-3 3.1.5 Dam Safety Consultant .............................................................................................. 3-3

3.2 External Entity ROLES .............................................................................................. 3-3 3.2.1 Local Disaster Management Group ........................................................................... 3-4 3.2.2 District Disaster Management Group ........................................................................ 3-4 3.2.3 State Disaster Coordination Centre ........................................................................... 3-4 3.2.4 Police COMMUNICATIONS CENTRE CAIRNS ........................................................ 3-4 3.2.5 Queensland Police, Herberton .................................................................................. 3-4

3.3 Affected PAR ............................................................................................................. 3-4

4. COMMUNICATIONS ............................................................................................................ 4-1

4.1 Communication Protocols .......................................................................................... 4-1 4.2 Communication Mechanisms .................................................................................... 4-1 4.3 Communication System ............................................................................................. 4-2

5. DAM OVERVIEW .................................................................................................................. 5-1 5.1 Dam Details ............................................................................................................... 5-1 5.2 Critical storage water level triggers ........................................................................... 5-2 5.3 Potential Problem Identification ................................................................................. 5-3

6. PREDICTED FLOOD LEVELS AND FLOOD TRAVEL TIMES ........................................... 6-1

6.1 Predicted Depth of Flooding ...................................................................................... 6-1 6.2 Flood Wave Travel Times .......................................................................................... 6-1

7. EMERGENCY EVENTS AND ACTIONS ............................................................................. 7-1

7.1 Dam Hazards ............................................................................................................. 7-1 7.2 Flooding ..................................................................................................................... 7-1

7.2.1 Preventative actions for Flooding Events: ................................................................. 7-2 7.3 Earthquake .............................................................................................................. 7-10

7.3.1 Preventative actions for an Earthquake Event: ....................................................... 7-10 7.4 Terrorist or high energy impact ................................................................................ 7-14

7.4.1 Preventative actions for Terrorism or High Energy Impact:..................................... 7-14 7.5 Sunny Day Failure ................................................................................................... 7-18

7.5.1 Preventative actions for a Sunny Day Failure Event: .............................................. 7-18 7.6 Reservoir Water Quality (Toxic Spill/ Algal Bloom within Catchment Area) .............. 7-1

8. WARNINGS AND NOTIFICATIONS .................................................................................... 8-2

8.1 Warning and notification mechanisms ....................................................................... 8-2 8.2 Warning and notification Processes .......................................................................... 8-2 8.3 Pre-prepared messages ............................................................................................ 8-3

8.3.1 Sunny Day Failure – Prepare to Evacuate ................................................................ 8-3 8.3.2 Sunny Day Failure – Evacuate Now .......................................................................... 8-3 8.3.3 Flood Events – Prepare to Evacuate ......................................................................... 8-3 8.3.4 Flood Events – Evacuate Now .................................................................................. 8-4


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8.3.5 Flood Events – Loss of Radio Signal - Evacuate Now .............................................. 8-4 8.4 Individual Evacuation Plans ....................................................................................... 8-4 8.5 End of Event .............................................................................................................. 8-4

9. EVENT REPORTING ............................................................................................................ 9-1

9.1 Storage Data Book .................................................................................................... 9-1 9.2 Emergency Event report ............................................................................................ 9-1

10. REVISION OF EVACUATION PLANS ............................................................................... 10-1

11. REFERENCES .................................................................................................................... 11-1


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APPENDICES

APPENDIX A – DATA COLLECTION

APPENDIX B – CATCHMENT BOUNDARY

APPENDIX C – POTENIAL PROBLEM IDENTIFICATION

APPENDIX D – INNUNDATION MAPS, POPULATION AT RISK CONTACT DETAILS AND EVACUATION PLANS

APPENDIX E – WILD RIVER DAM STORAGE CURVE & STORAGE SPILLWAY DISCHARGE CURVE


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LIST OF ABBREVIATIONS USED IN THIS TEXT AEP Annual Exceedance Probability AHD Australian Height Datum AMTD Adopted Middle Thread Distance ARI Average Recurrence Interval BoM Bureau of Meteorology CEO Chief Executive Officer DCL Dam Crest Level DDMG District Disaster Management Group DDS Director Dam Safety DEHP Department of Environment and Heritage Protection DNRME Department of Energy and Water Supply DICL Ductile Iron Concrete Lined (in reference to water pipe) DN Diameter Nominal DSR Dam Safety Review EA Emergency Alert EAP Emergency Action Plan EER Emergency Event Report EWN Early Warning Network FIA Failure Impact Assessment FSL Full supply level is the level of the water surface of the dam when the water storage

is at maximum operating level when not affected by flood GMIS General Manager Infrastructure Services HICB Hazardous Industries & Chemical Branch WH&S Qld IROL Interim Resource Operations Licence LDC Local Disaster Coordinator LDCC Local Disaster Coordination Centre LDMG Local Disaster Management Group LiDAR Laser Interferometry Detection and Ranging (remote sensing for survey) MWW Manager Water and Waste PAR Population at Risk PAR1 Population at Risk with a travel time for a failure wave from the dam of less than 10

minutes. PAR2 Population at Risk with a travel time for a failure wave from the dam of greater than

10 minutes. PMF Probable Maximum Flood PMP Probable Maximum Precipitation PMPDF Probable Maximum Precipitation Design Flood PMPDFNF Probable Maximum Precipitation Design Flood No Dam Failure PMPDFF Probable Maximum Precipitation Design Flood Dam Failure QPS Queensland Police Service SCADA Supervisory Control and Data Acquisition RE Relevant Entities SDCC State Disaster Coordination Centre SDF Sunny Day Failure SES State Emergency Service SOP Standard Operating Procedure TRC Tablelands Regional Council


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TERMS AND DEFINITIONS USED IN THIS TEXT The meaning of terms used in this Emergency Action Plan are set out in Section 352A of the Water Supply (Safety and Reliability) Act 2008 (Qld) – Amended 3 July 2017.


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1. INTRODUCTION

1.1 PURPOSE

Tablelands Regional Council (TRC) has prepared this EAP for Wild River Dam in accordance with the requirements of the Queensland Water Supply (Safety and Reliability) Act 2008 (the Act) that the owner of a referable dam must have an approved Emergency Action Plan (EAP) for the dam. The purpose of an EAP under the Act is to “minimise the risk of harm to persons or property if a dam hazard event or emergency event for the dam happens”. This EAP outlines procedures to be followed to manage the consequences of a dam hazard or emergency event at the dam. It includes the roles, responsibilities and procedures for TRC as the dam owner and local government, as well as those for the Local, District and State Disaster Management Groups, emergency agencies and affected persons. 1.2 WILD RIVER DAM

Wild River Dam is owned and operated by Tablelands Regional Council. Construction of the new Wild River Dam (Figure 1) was completed in 1994. The dam is located at the headwaters of the Wild River (AMTD 335.4 km) approximately 5 km East North East of Herberton at the end of Moomin Road (17o 21’ 22” S and 145o 25’ 55.94” E.). The dam consists of a compacted earth and rock fill embankment with central clay core, vertical filter zone, upstream riprap and a grassed downstream embankment. It is located approximately 790 m upstream of the original mass concrete dam (Figure 1) known as ‘Old Wild River Dam’ (Figure 3) which was the only town water supply storage for Herberton prior to 1994. Wild River Dam has a gravity feed outlet that releases into the Wild River by means of a Floating gravity syphon Intake, Outlet Conduit and Outlet Valve (Figure 4). An intake pipe for the gravity feed pipeline to Herberton is located in the base of a Town Water Supply Weir (Figure 5) immediately downstream of the Old Wild River Dam. The purpose of these dams and weir is to supply water to Herberton.

Figure 1 Wild River Dam


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Figure 2 Wild River Dam Location Map

Figure 3 Old Wild River Dam


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Figure 4 Herberton Town Water Supply

Figure 5 Schematic Diagram of Dams


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1.3 FAILURE IMPACT ASSESMENT

Sinclair Knight Merz Pty Ltd (now Jacobs Group (Australia) Pty Ltd) were engaged by Tablelands Regional Council in 2013 to undertake a Failure Impact Assessment (FIA) study and Dam Safety Review (DSR) report. The FIA study was finalised in December 2013, and the DSR was completed in March 2014. The Population at Risk (PAR) was calculated in accordance with the QLD Government Guidelines for Failure Impact Assessment of Water Dams (2012). The FIA undertaken by Sinclair Knight Merz Pty Ltd (Jacobs Group (Australia) Pty Ltd) identified 26 people at risk in a Sunny Day Failure (SDF) event and 81 people at risk due to a Probable Maximum Flood (PMF) event in either a dam failure or no dam failure scenario. It is noted that all PAR affected in a PMF dam failure scenario are also affected by flooding in a PMF event without dam failure. The PAR identified for the SDF event, is associated with 9 houses. The PAR identified for the PMF events is associated with 20 houses, 1 unit block and 9 terraced/row houses. Further analysis in 2019, assessed the potential consequences in the event of the failure of Wild River Dam causing a cascade failure of Old Wild River dam downstream. Given the small volume and close proximity of the Old Wild River Dam to the Wild River Dam, the effects with and without cascade failure are very similar. This analysis identified no additional buildings affected under cascade failure in the SDF event. One additional building was identified as impacted in a cascade failure during the PMFF event, with an associated additional 2.9 incremental PAR. Lower lying parts of the lot associated with this building are affected by the PMFF event without cascade failure so no additional properties are required to be notified during an event. Evacuation maps prepared for each affected lot have been updated to show impacted areas with and without cascade failure. The PAR for the flooding in a PMF event has been broken into 2 groups, PAR1 for Population at Risk with a travel time for a failure wave from the dam of less than 10 minutes and PAR2 for Population at Risk with a travel time for a failure wave from the dam of greater than 10 minutes. 2 houses are associated with PAR1 and 18 houses, 1 unit block and 9 terraced/row houses are associated with PAR2.

Section 2 has been redacted


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3. ROLES AND RESPONSIBILITIES

As the owner of the dam, TRC has responsibility for implementation of the Wild River Dam EAP. TRC has identified a team to undertake this responsibility. The roles and responsibilities within this team are outlined within Section 3.1. Outside TRC, other entities also have roles and responsibilities under this EAP. These are outlined in Section 3.1.5. Affected persons, or Population at Risk (PAR), identified within this EAP also have a role in the effective implementation of this plan to minimise the consequences of a dam hazard or emergency event. This role is outlined in Section 3.3. 3.1 TRC ROLES

The EAP is implemented within TRC by a team which comprises four key roles: EAP Officer

EAP Backup Officers and Maintenance Personnel

Manager Water and Waste

GMIS

CEO

Tablelands Local Disaster Coordinator Figure 6: TRC Roles The responsibilities of each of these officers are outlined in the following sections. Key actions for each role are outlined within the flowcharts and tables for each emergency event. Contact details for the TRC officers with these roles and responsibilities are included in Section 2. Each officer is to undergo initial EAP training when identified for one of these roles and participated in continuing refresher training and annual Scenario Event exercises. EAP Training exercises consist of understanding triggers for when EAP is to be enacted, roles and responsibilities of each person, communication / notification protocols and preventative and remediation actions under different EAP events.

LDC Coordinator

Manager Water and

Waster

EAP

Officer

Backup EAP Officers and

Maintenance Officers

Dam Safety Consultant


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3.1.1 EAP Officer

The EAP Officer shall: Keep the Emergency Action Plan in a clean, secure facility.

In the event that the EAP Officer is unable to fulfil these duties advise MWW.

Notify MWW of names and contact details of personnel undertaking and/or relieving the role of Backup EAP Officer and Maintenance personnel.

Monitor the storage water level of the dam.

If possible, monitor Bureau of Meteorology website for forecasted extreme weather events.

Immediately notify the EAP Backup officers when the Emergency Action Plan is being initiated.

Follow the Emergency Action Plan in time of emergency.

During an emergency event, report to and receive instructions from the MWW or if he cannot be contacted, the GMIS, or if he cannot be contacted, the CEO TRC.

In an emergency event, take steps to ensure personal safety and the safety of other EAP Officers and the public.

Provide regular reports to the MWW for evaluation during the emergency or the person who will undertake that role during the emergency event.

If contacted by media during an emergency event the EAP Officer should refer the media to the TRC Strategic Communications Advisor and record time, date and action taken.

On the Log of Events/Actions Sheet (refer to Appendix A) and the Record of Communications Sheet (refer to Appendix A) keep a daily running record of all actions/events and telephone calls to and from the MWW, EAP Backup Officers and other personnel (in relation to the event) for the duration of the emergency event.

- Record: to and from - who requested actions; what actions were requested and carried out; and the time and the date they were carried out. Record any rainfall at the dam during the event using the Record of Rainfall form (Appendix A).

After the event compile an Emergency Event Report and forward unedited copies to the MWW.

Transfer the Record of Events/Actions, Communications and Rainfall to the Storage Data Book after the Event.

Actively participate in the refresher training and annual Event Scenario exercises as directed.

Actively contribute to the review of the Emergency Action Plan. 3.1.2 EAP Backup Officer and Maintenance Officers

EAP Backup Officer and Maintenance Officers shall: Assist the EAP Officer in times of emergency.

Follow the Emergency Action Plan during emergency events.

During adverse weather conditions, EAP Backup Officer and Maintenance Officers shall attempt to contact the EAP Officer.

Actively participate in the refresher training and annual Event Scenario exercises as directed.

If the EAP Officer is unavailable, they shall undertake the responsibilities of the EAP Officer. 3.1.3 Manager Water and Waste

Manager Water and Waste shall:


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Review the Emergency Action Plan in consultation with LDMG, DDMG and TRC by 1st August each year (to enable submission to DDMG and LDMG for 30 business days if an amendment is required) and provide notice to DNRME Dam Safety by 1 October each year.

Ensure the Emergency Action Plan is distributed according to the Distribution List and that the police and disaster management organisations are conversant with the plan.

Ensure this Emergency Action Plan is implemented.

Approve the person undertaking and/or relieving in the role of EAP Officer and EAP Backup Officers.

Ensure the EAP Officer and Backup Officers are conversant with the Emergency Action Plan.

Ensure that the PAR in Herberton and Wondecla are contacted annually and informed about the EAP and the expectations of them in dam safety emergency events.

Ensure that the PAR contact details are checked and updated annually.

Ensure that the PAR in Herberton and Wondecla are warned of dam safety emergency events (in collaboration with the LDC).

Notify the CEO and GMIS of any emergency event.

Monitor all emergency events.

Provide regular updates during emergency events to the CEO and LDC.

Evaluate reports from EAP Officers and provide directions where required in this plan.

Undertake verification of / inspection of deficiencies identified by the EAP Officer and provide directions where required in this plan.

Coordinate with external dam safety consultants (RPEQ) where additional expertise is required.

Within thirty (30) days of an event, present an Emergency Event Report to Director Dam Safety.

Ensure that EAP training including initial training, annual refresher training and annual Event Scenario exercises are undertaken in coordination with the LDC

3.1.4 Tablelands Local Disaster Coordinator

The Local Disaster Coordinator shall on behalf of the Tablelands LDMG (excerpt taken from Disaster Management Act 2003):

(a) coordinate disaster operations for the local group;

(b) report regularly to the local group about disaster operations;

(c) ensure, as far as practicable, that any strategic decisions of the local group about disaster operations are implemented; and

Issue Early Warning Network (EWN) and Emergency Alert (EA) messages to the PAR on behalf of the dam owner as required. 3.1.5 Dam Safety Consultant

For the purposes of the Wild River EAP, the responsibility of the Dam Safety Consultant is to provide advice to TRC as requested by the Manager Water and Waste. The Dam Safety Consultant is to be a Registered Professional Engineer of Queensland (RPEQ) with appropriate expertise relevant to the issue to be considered. 3.2 EXTERNAL ENTITY ROLES

External entities with responsibilities under this EAP include the Local Disaster Management Group, District Disaster Management Group, State Disaster Coordination Centre, Queensland Police Service, and Dam Safety Regulator, DNRME.


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This section outlines the responsibilities of each of these entities. Contact details for the external entities with these roles and responsibilities are included in Section 2. 3.2.1 Local Disaster Management Group

For the purposes of the Wild River EAP, the responsibilities of the Local Disaster Management Group are undertaken by the Local Disaster Coordinator (TRC officer) in collaboration with the Local Disaster Management Group. See Section 1. 3.2.2 District Disaster Management Group

The role of the District Disaster Management Group in relation to this EAP is to support the disaster response by providing support to the LDMG where capacity and capability to respond is exceeded. 3.2.3 State Disaster Coordination Centre

The role of the State Disaster Coordination Centre in relation to this EAP is to store and test emergency alert polygons and messages, and issue when requested by the LDC. 3.2.4 Police Communications Centre Cairns

The role of the Police Communications Centre Cairns in relation to this EAP is to:

Contact Herberton Police and advise them to activate their Station Instruction to provide QPS response for evacuation of the PAR.

Contact the QPS District Duty Officer to ensure adequate Police response to an evacuation of the PAR.

3.2.5 Queensland Police, Herberton

Queensland Police Herberton, will:-

Activate the Station Instruction to provide QPS response actions for the evacuation of the PAR when notified of the relevant Dam EAP activation.

3.3 AFFECTED PAR

Persons likely to be affected in a dam hazard or emergency event have been identified through failure impact assessment for a range of potential events as outlined in Section 1.3. The details of each affected PAR including contact details are identified in Appendix D. Evacuation maps for each PAR are also included in Appendix D. Communication protocols for providing notifications and warnings to PAR are identified in Section 8. The responsibility of the affected PAR under this EAP are to: Provide updated contact details annually when contacted by TRC officers to allow subscription

to the EWN service used for dissemination of warnings by TRC.

Prepare for an emergency event by reviewing the evacuation plans and EAP information provided.

Follow the instructions of warnings and notifications.


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4. COMMUNICATIONS

4.1 COMMUNICATION PROTOCOLS

Figure 7 identifies the lines of communication during an event. All media queries should be referred to the TRC media coordinator. Notification and warning of affected PAR is the responsibility of the MWW in liaison with the LDC. All other external communications are the responsibility of the MWW.

Figure 7 Communications Protocols 4.2 COMMUNICATION MECHANISMS

The primary means of communications between the EAP Officer and parties external to Herberton and Wondecla shall be by mobile telephone or Council radio. Messages are to be confirmed as being received, leaving a voicemail and assuming it has been received is not sufficient. It is noted that effective communication and warning within this plan is heavily reliant on the mobile telephone network. Following cyclone events, the loss of power and mobile reception is likely. If an emergency event were to occur during the aftermath of a cyclone, implementation of the EAP may be compromised due to loss of communications and difficulty accessing the dam. The following back-up procedures are currently in place: Solar power back up for telemetry at dam site;

Redundancy of monitoring at dam via CCTV on 3G/4G link;

Generator back up at Council depots (not all have automatic fail over) and availability of Council radio; and

EAP Officer

MWW

LDC GMIS

CEO

Media Coordinator

Mayor

Affected PAR

Councillor Police Communications, Cairns

DNRME

Media 000 National Security Hotline

QPS Counter Terrorism Liaison


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Potential for relay of warnings to PAR via SES and Police communications e.g. door knocking, radio systems.

4.3 COMMUNICATION SYSTEM

TRC has its own licenses to operate radio communication equipment under the Australian Communications and Media Authority (the AMCA), which are renewed annually. TRC currently has two (2) licenses under the AMCA, details are as follows: Table 1: Details of TRC's licenses to operate radio communications equipment License No. Site/Area Callsign Service /

Subservice Expiry Date

103090/2 Austek Site, 1.5km NE of Cnr Kennedy Hwy and Longlands Gap Rd

VL4QI Land Mobile / Land Mobile System - > 30MHz

14/06/2020

103113/1 VMQ692 Land Mobile / Ambulatory System

14/06/2020

The primary repeaters for the TRC radio network are located at Longlands Gap. This includes the previous Southern and Central zone radios that are now linked and interoperable. The base stations for the radio systems are located in the Local Disaster Coordination Centre (LDCC). Some TRC vehicles are fitted with a UHF radio, in particular the EAP Officer, Backup EAP Officer and Coordinator Water and Wastewater Reticulation vehicles. The Tablelands Local Disaster Management Group has a Resilient Communications Sub Plan under the disaster management plan under the following: http://www.trc.qld.gov.au/disaster-management/local-disaster-management-plan/ TRC promotes the use of UHF CB 10 as a community solution. UHF-CB radio is primarily for members of a community to communicate with each other during and after a disaster so that they can assist one another. Emergency aid may not be available to some people whether or not they have a radio. They may be isolated due to impassable conditions, flooding, down power lines, fire, fallen structures, blocked roads, or there may not be public safety or other resources to assist them. It should be noted that possession and use of a two-way radio does not guarantee an instant and reliable or an immediate and effective response to an individual’s call for help – calling out on a two-way radio does NOT guarantee a response. Whilst it cannot be guaranteed, having a two-way radio may enable community members and appropriate officials to communicate with persons affected by disaster.

http://www.trc.qld.gov.au/disaster-management/local-disaster-management-plan/


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5. DAM OVERVIEW

5.1 DAM DETAILS

Name and location Name of Dam Wild River Dam Other Names None Location Latitude 17°21'59.56"S

Longitude 145°25'52.20"E DERM Region North Shire Tablelands Regional Council Nearest Town Herberton and Wondecla Stream and AMTD Wild River 335.4 km Licence No No ‘Interim Resource Operations Licence (IROL) Development Permit Development Permit Dam Safety Conditions for Wild River

Dam issued by DNRW in February 2006 Current Owner Tablelands Regional Council Designer & Date Gutteridge Haskins and Davey Pty Ltd, July 1993 Construction Contractor Beckhaus Civil Pty Ltd, 1994 Safety review dates 2004 (SunWater) and 2013 (SKM, now Jacobs Group

(Australia)) Storage characteristics Full supply level (FSL) 1046.6 m AHD Storage capacity 290 ML Surface area 6.2 Ha at FSL Length of shoreline Unknown Catchment area 530 Ha Catchment description Steep hills covered in thick vegetation Dam Crest Level EL 1050.15 m AHD (3550 mm above the spillway) Population at Risk 81 Description of dam wall Wall Type-Main Wall Compacted earth and rockfill embankment with central clay

core, vertical filter zone and upstream riprap protection. Wall Height (max. D/S toe) 16 m Dam Crest Elevation EL 1050.15 m AHD (3550 mm above the spillway) Embankment Length 230 m


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Description of spillway Spillway Description Broad-crested weir Spillway Elevation EL 1046.6 m AHD Crest Width 45 m Spillway outflow Capacity (at DCL)

approximately 456 m³/s

Design Flood Estimates SKM (2013, 2014), SunWater(2004) Spillway capacity (AEP) Approximately 1 in 1,700,000 AEP Auxiliary spillway N/A Description of outlet works Intake Works Floating intake raft River Release Conduit Description Concrete encased DN 200 mm DICL Outlet Pipe

Outlet Valve Arrangement Outlet conduit terminates at an Outlet Valve Box containing a 200 mm diameter sluice valve, a 200 mm diameter to 150 mm DICL reducer and a 150 mm diameter Bermad (constant) flow control valve.

5.2 CRITICAL STORAGE WATER LEVEL TRIGGERS

Figure 8 identifies the critical water level triggers within the reservoir for the escalation of activation levels within the EAP. Access to the dam and nearby properties is cut by the Wild River in even minor flood events, thus observation of the dam during flooding events is wholly reliant on remote monitoring. Reservoir water levels are monitored in multiple ways to provide communication link redundancy in the EAP. 1. A pressure sensor was installed in November 2013 to measure the reservoir water level with

the data relayed to the Council dept via a SCADA/Telemetry system. 2. In late 2018, a series of additional monitoring systems including a bubbler water level sensor

were installed at the dam with images and data transmitted to the Council depot via 3/4G signal.

3. Additional redundancy within the system was included via the installation of a CCTV camera. The camera can be operated remotely allowing the operators to zoom in on the spillway. A reflector-style gauge is installed on a centre-post to allow accurate visual assessment of the depth of flow over the spillway. The camera functions including the ability to pan, enabling view of the seepage control structure and the dam wall alignment. The system captures fixed images of the spillway, seepage structure and dam wall alignment every 15 minutes under normal operations.

The EAP officer on duty monitors the reservoir level primarily using the SCADA system with automated alarms set at EAP trigger levels to allow rapid escalation of EAP activation levels as required. An alarm is also triggered if there is an outage of the SCADA system. In the case of an outage, the EAP officer on duty will continually monitor the reservoir level using the backup information from the bubbler system and CCTV camera. While the systems utilise different communication protocols and infrastructure, and are isolated in case of a lightning strike, there is a possibility of loss of both systems in a cyclone event. For this reason, loss of communications warning messages and evacuation procedures are included within this EAP.


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Figure 8: Dam Embankment Cross Section with Critical Storage Water Level Triggers 5.3 POTENTIAL PROBLEM IDENTIFICATION

Potential problem identification through routine inspections is the key trigger for activation of and escalation of activation levels within the EAP. TRC may become aware of an Earthquake (by way of community reports, employee advice or alerts via GeoScience Australia) which may trigger the Local Disaster Management Group and may trigger EAP activation. Officers inspect the dam weekly and complete an inspection checklist. The weekly inspection checklists are sent to Manager Water and Waste who will check and evaluate these reports. The monitoring equipment installed in late 2018 also allows remote monitoring of conditions at the dam where access to the dam is not possible such as during an earthquake, significant rainfall event, or in the event of a terrorist threat/ attack. This allows the following to be undertaken remotely: Visual inspection of the dam wall, spillway, walkway access and tailwater conditions. Visual inspection of deformities in the dam wall Visual inspection of the v-notch weir in the seepage monitoring station to provide an indication

of seepage flow. It is important that the dam is inspected during an emergency event or shortly thereafter by the EAP officer, providing it is safe to do so. Potential problems that can be identified during these inspections are discussed within Appendix C. Any abnormalities shall be immediately brought to the attention of Manager Water and Waste, and General Manager Infrastructure Services. In the event of an identified issue or potential deficiency, inspection by an RPEQ should be undertaken. In the first instance, this would be undertaken by the Manager Water and Waste. However, if deemed necessary by the Manager Water and Waste, inspection by a dam safety consultant may also be undertaken.


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6. PREDICTED FLOOD LEVELS AND FLOOD TRAVEL TIMES

6.1 PREDICTED DEPTH OF FLOODING

Hydraulic modelling was undertaken by SKM (Jacobs Group (Australia)) as part of the Failure Impact Assessment in 2013 using the MIKEFLOOD computer package. Further analysis was undertaken in 2019 to identify any additional impacts in a cascade failure scenario should Old Wild River Dam fail due to failure of the upstream Wild River Dam. This analysis concluded there was very little difference in the impacted area in a cascade failure event. Predicted flood depths in the Wild River have been extracted for specific locations and are listed in the table below:

Location Depth (m) Incremental

difference of PMPDFNF – PMPDFF (m)

SDF PMPDFNF PMPDFF

D/S of Wild River Dam

2.8 4.1 4.4 0.3

D/S of Old Concrete Dam

3.3 6.0 6.0 0.0

Railway Bridge 2.1 5.1 5.2 0.1 Herberton Bridge 1.1 5.1 5.2 0.1 Wondecla 4.9 9.9 9.9 0.0 End of model 4.1 19.0 19.0 0.0 6.2 FLOOD WAVE TRAVEL TIMES

The ability of PAR to evacuate is heavily dependent on whether they receive warning before the dam failure wave flood wave arrives at their property. In general, warning of at least 60 minutes is required to be considered best endeavours. Warning time is dependent on: Time for breach formation (and whether breach formation is identified early);

Travel time for flood wave; and

Time to deliver warning. SKM (Jacobs Group (Australia)) (2013) identified breach formation parameters including the likely breach formation time based on the Guidelines for Failure Impact Assessment of Water Dams (DNRME, 2012). The adopted breach parameters are presented the Table below: Event Volume of

water discharged at time of breach (ML)

Volume of material removed from breach (m³)

Breach Initiation Level (mAHD)

Breach Level Final (mAHD)

Final Breach Base Width (m)

Breach Slope (degrees)

Breach Develop’t. Time (minutes)

Sunny Day 290 2460 1050.15 1034 1.7 10 38

PMPDF 600 4760 1050.15 1034 5.1 10 48


Wild River Dam


The failure wave travel time (time for the failure wave to travel from the dam to each PAR) increases with distance downstream of the dam. It ranges from less than 10 minutes for the closest PAR (2 properties) to 1-1.5 hours for PAR in Herberton and 2-2.5 hours for PAR in Wondecla. The minimum time to send out Emergency Messaging using the Early Warning Network system is approximately 20 minutes, while the minimum time to send out an Emergency Alert using the State-wide system is approximately 40 minutes. It is clear that providing adequate warning of more than 60 minutes will not be possible for the 2 properties immediately downstream of the dam and will be difficult for PAR located further downstream, if warning does not occur until the dam begins to fail. Due to the isolated nature of the dam, early identification of breach initiation is also unlikely. The following are therefore critical: early identification and management of potential failure events;

early and effective warning to PAR occurs; and

effective prior communication with PAR to understand what to do if they receive a warning.


Wild River Dam


7. EMERGENCY EVENTS AND ACTIONS

7.1 DAM HAZARDS

The following events are defined as emergency events for the Wild River Dam: Flooding Event

Earthquake event

Terrorist or high energy impact

Sunny Day Failure (SDF) events (all other events that may lead to SDF)

Any water quality contamination events at Wild River Dam are managed under Tablelands Regional Council’s Drinking Water Quality Management Plan which includes the Herberton Water Supply Scheme.

Structural failure of the dam can occur when the storage level is at or below FSL, and when the dam is spilling. Structural issues can however become more likely during a flood event due to higher hydrostatic pressures on the structure and foundations.

A “Sunny Day” failure is defined as failure of the dam and the release of water downstream, when there is low or no inflow to the dam from rainfall events. This type of dam failure is unexpected and can occur with little or no warning.

A “Sunny Day” failure may be as a result of any or a combination of the following: Embankment stability issues: increased seepage, new visible signs of seepage and particularly

evidence of sediment transport (i.e. cloudy flow) as this can be an indication of piping.

Signs of distress in embankment such as cracking and/or deformation and/or evidence of material having slid off embankment.

Appearance of sinkholes, soft spots and ‘boggy areas’

abnormal instrument readings (piezometers indicating higher hydrostatic pressures)

differential movement or settlement

increasing rates of seepage or development of new seepage paths

piping of the embankment

Earthquakes and Landslides.

Terrorist or high energy impact (non-natural events), including deliberate, accidental or vandalism actions against the dam structure.

In many of these cases there will be no warning and hence no Alert or Lean Forward level. This has been addressed by the recent installation of remote monitoring equipment at the dam including CCTV camera which allows visual inspection of the dam, spillway and v-notch weir.

7.2 FLOODING

Flooding from significant rainfall has been identified as a dam hazard for Wild River Dam with the potential to cause a dam emergency event. The following sections identify the actions to be undertaken in a flooding event.

The EAP will be activated when the reservoir level reaches EL 1047.1 m AHD (500 mm over the spillway) and heavy rainfall is continuing in the catchment. This corresponds to Alert Level 2. Trigger levels for movement between the different levels are outlined in the Flooding flowchart.

The EAP officer is responsible for monitoring reservoir levels via the SCADA/Telemetry system and


Wild River Dam


CCTV system and identifying when activation of the EAP or escalation of the EAP activation level is required.

Failure Impact Assessment undertaken by SKM and Jacobs identified a maximum number of 31 flood-affected properties in a PMF event with and without dam failure or cascade failure of Old Wild River Dam.

The maximum recorded flood depth flowing over the spillway was 108mm (1046.71 m AHD) on Thursday 24 January 2013. This minor flood event resulted in the access road to the dam becoming inaccessible where the road crosses the river near the old railway bridge. It is noted that anecdotally the dam has often experienced larger overflow events prior to installation of gauging in November 2013. SunWater identified the critical duration storm for the catchment as 1.5 hours, with peak dam levels occurring approximately 1.3 hours after the start of the storm. This means that with very intense rainfall, the time period from activation of “Alert” status to “Stand-up” could be less than 30 mins. As access to the dam and nearby properties is cut by the Wild River in even minor flood events, it is noted that: Observation of the dam during flood events is wholly reliant on the remote monitoring systems,

although there is redundancy built into the system; and

At least 2 properties comprising PAR are likely to be isolated prior to activation of the EAP.

There is no public access to the Wild River reach between the Wild River Dam and the Old Wild River Dam and the access road to these dams has locked security gate so it is unlikely to cause hazard to the public when the river outlet of the Wild River Dam is operated.

7.2.1 Preventative actions for Flooding Events:

Monitor BoM weather radar and storage water level.

Initial EAP training and continuing refresher training and annual Scenario Event exercises organised by MWW. Details of the training is as follows:

- EAP Training will be held prior to the start of the wet season.

- EAP Officer, Backup EAP Officers, MWW and LDC are to attend and participate in the training.

- EAP Training exercises to consist of understanding triggers for when EAP is to be enacted, roles and responsibilities of each person, communication / notification protocols and preventative and remediation actions under different EAP events.

Issue individual Evacuation Plans to PAR affected by a PMF event, and in particular to each house visited explain:

- What to do.

- Where to go.

- When.

Ensure that all identified PAR are aware of the implications of large floods with or without dam failure, how they may be affected, where they (as individual groups) are to go and what they have to do at short notice if notified to evacuate.

Contact details in the EAP confirmed, and if necessary updated, each year by 1 September for all PAR affected by a PMF event.

Ensure all identified PAR are signed-up to the Early Warning Network service with TRC which provides voice, SMS and email messaging.

If updated, the relevant section(s) of the EAP sent to each holder of a controlled copy of this EAP.


Wild River Dam


Review Emergency Alert polygon and template, and check that is properly lodged with the SDCC.


Wild River Dam


Figure 9: Flood Emergency Flowchart


Wild River Dam


Table 2: Flooding Event – Emergency Action Table

Activation Status Alert 1 Alert 2 Lean Forward Stand Up 1 Stand Up 2 Stand Up 3 Stand Down Activation Trigger Cyclone forecast for the

Herberton region with torrential rain and subsequent flooding likely.

Spillway discharging, storage water level at 1047.1 m AHD (500 mm over the spillway), heavy rain falling and storage continuing to rise.

Storage water level at 1047.3 m AHD (700 mm over the spillway), heavy rain falling and storage continuing to rise.



Storage water level approaching 1050.15 m AHD (3550 mm over the spillway); imminent risk of failure or overtopping.

Storage water level dropping to below 1046.9 m AHD (300 mm over the spillway).

Actions: by whom & what

EAP Officer: 1. Notify MWW that EAP

has been enacted and maintain communications.

2. Record all instructions (from whom to whom, where, when & what), telephone conversations, etc. including time and date on the record of communication.

3. Monitor and record storage water level and rainfall via SCADA/Telemetry and/or CCTV system as access road will be impassable.

4. Continue to notify MWW at intervals of four (4) hours.

EAP Officer: 1. Notify MWW that EAP

has been enacted and maintain communications.

2. Record all instructions (from whom to whom, where, when & what), telephone conversations, etc. including time and date on the record of communication.

3. Monitor and record storage water level and rainfall via SCADA/Telemetry and/or CCTV system as access road will be impassable.

4. Continue to notify MWW at intervals of one (1) hour.

EAP Officer: 1. Notify MWW of change

of EAP activation status and maintain communications.

2. Mobilise Backup EAP Officer and Maintenance Officers.

3. Continue monitoring and recording storage water level and rainfall via SCADA/Telemetry and/or CCTV system at intervals of thirty (30) minutes.

4. Provide report to MWW, then at increments of 500 mm or as directed.

EAP Officer: 1. Notify MWW of change

of EAP activation status as water storage level has exceeded 1048.1 m AHD (1500 mm over the spillway).

2. Continue monitoring and recording storage water level and rainfall to MWW at intervals of thirty (30) minutes.

EAP Officer: 1. Notify MWW water

storage level has exceeded 1049.1 m AHD (2500 mm over the spillway), and maintain communication.

2. Continue monitoring and recording storage water level and rainfall to MWW at intervals of fifteen (15) minutes or as directed by MWW.

EAP Officer: 1. Notify MWW that dam

failure may occur at any time.

2. Continue monitoring and recording storage water level and rainfall to MWW at intervals of fifteen (15) minutes or as directed by MWW.

3. Monitor telemetry for signs of failure

EAP Officer: 1. Providing road to dam

is trafficable, request Backup EAP Officers are to inspect dam as soon as possible.

2. Notify MWW water level has dropped below 1046.9 m AHD (300 mm over the spillway) and change of activation status.

3. Prepare report on event for MWW.

4. On the Log of Events / Actions Sheet and the Record of communications Sheet keep a daily running record of all actions / events and telephone calls to and from the MWW, Backup EAP Officers and other personnel.

5. After the event compile an Emergency Event Report and forward unedited copies to the MWW.

6. After the event transfer all data from the event to the Storage Data Book.


Wild River Dam











MWW: 1. Notify LDC, GMIS, CEO,

Councillor for division, Police Communication Centre Cairns, DDS (DNRME).

2. Maintain communications with the EAP Officer and LDC.

3. Obtain rainfall forecast from BoM, track progress and effects of flood and inform the EAP Officer of the flood forecast.

4. Should loss of radio signal (Telemetry) occur and high risk of increasing level over spillway notify LDC to issue communicate warning notification.

MWW: 1. Notify LDC, GMIS, CEO,

Councillor for division, Police Communication Centre Cairns, DDS (DNRME).




MWW: 1. Review EAP Officer

reports. 2. Notify LDC, GMIS,

CEO, Councillor for division, Police Communication Centre Cairns, DDS (DNRME).

3. Maintain communications with the EAP Officer and LDC and provide updates at intervals of one (1) hour.




reports. 2. Notify LDC and advise

to prepare for evacuation and provide updates at intervals of thirty (30) minutes.

3. Notify GMIS, CEO, Councillor for division, Police Communication Centre Cairns, DDS (DNRME).





reports. 2. Notify LDC and advise

evacuation is required and provide updates at intervals of fifteen (15) minutes.

3. Notify GMIS, CEO, Councillor for division, Police Communication Centre Cairns, DDS (DNRME).





reports. 2. Notify LDC, GMIS,

CEO, Councillor for division, Police Communication Centre Cairns, DDS (DNRME).

3. Maintain communications with the EAP Officer and LDC and provide updates at intervals of fifteen (15 minutes).

MWW: 1. Notify LDC and advise

that the EAP is deactivated and authorise notification of residents that event is over.

2. Notify GMIS, CEO, Councillor for division, Police Communication Centre Cairns, DDS (DNRME).Prepare EER.

3. Remedial works undertaken to mitigate risk.

LDC: 1. Coordinate the response

and implement the disaster management plans as required.

2. Notify PAR1

LDC: 1. Coordinate the response

and implement the disaster management plans as required.

LDC: 1. Coordinate the

response and implement the disaster management plans as required.



2. Notify PAR



2. Notify PAR



2. Notify PAR

LDC:


Wild River Dam










Notifications: by whom & to whom

EAP Officer: 1. MWW

EAP Officer: 1. MWW

EAP Officer: 1. MWW 2. Backup EAP Officer





MWW: 1. LDC 2. GMIS 3. CEO 4. Councillor for division 5. Police Communication

Centre, Cairns 6. DDS (DNRME)













LDC: 1. PAR1

LDC:

LDC:

LDC: 1. PAR

LDC: 1. PAR

LDC: 1. PAR

LDC: 1. PAR

CEO: 1. Mayor

CEO: 1. Mayor

CEO: 1. Mayor

CEO: 1. Mayor

CEO: 1. Mayor

CEO: 1. Mayor

CEO: 1. Mayor

Note: - Actions are numbered in order of priority.


Wild River Dam


Table 3: Flood Event – Communication Table Activation Status Trigger for Communications / Notifications Contact Groups (in

Priority Order) Method Message Code Message Text

Alert 1 Cyclone forecast for the Herberton region with torrential rain and subsequent flooding likely.

Population At Risk (PAR1)

Phone (Voice Message) via: • Early Warning Network

system subscribed to by TRC;

• Direct telephone call

Tablelands Regional Council wish to inform you that a cyclone is forecast to affect the Herberton region in the coming days. Torrential rain is likely and Tablelands Regional Council advises you to consider evacuating your property to higher ground or risk access to your property being cut off. For more information tune into local radio or call Tablelands Regional Council on 1300 362 242. Cyclone forecast to affect Herberton region in coming days. Consider evacuation or risk access to your property being cut off. More info: local radio, TRC 1300 362 242

Alert 2 Loss of remote monitoring communications PAR (all) Phone (Voice Message) via: • Early Warning Network


• Direct telephone call

This is a Flash Flood Watch and Act message from Tablelands Regional Council. Radio signal to monitoring equipment at the Wild River Dam has been lost. Heavy rainfall may have led to rises in the Wild River Dam. If you experience rapidly rising water levels, collect your evacuation kit and move to a place of safety on higher ground. For more information tune into local radio or call Council on 1300 362 242

Lean Forward Not Applicable Not Applicable Not Applicable Not Applicable Not Applicable Stand Up 1 Storage water level above 1048.1 m AHD (1500

mm over the spillway). PAR (all) Phone (Voice Message) via:

• Early Warning Network system subscribed to by TRC;

• State-wide EA system

Emergency Emergency this is an important message from Tablelands Regional Council. Heavy rainfall has led to rapid rises in the Wild River Dam. Water height has now exceeded 1048.1 metres AHD. The critical height for the Wild River Dam is 1050.15 metres AHD (Crest Level). Please prepare for evacuation and await further instruction. For more information tune into local radio or call TRC on 1300 362 242. Heavy rain has led to rapid rises in Wild River Dam. Water is now 2m below crest. Be prepared to evacuate. More info: local radio, TRC 1300 362 242.

Stand Up 2 Storage water level above 1049.1 m AHD (2500 mm over the spillway).

PAR (all) Phone (Voice Message) via: • Early Warning Network



Emergency Emergency this is an important message from Tablelands Regional Council. Heavy rainfall has led to rapid rises in the Wild River Dam. Water height has now exceeded 1049.1 metres AHD. The critical height for the Wild River Dam is 1050.15 metres AHD (Crest level). Please collect your evacuation kit and move to a place of safety on higher ground. For more information tune into local radio or call Tablelands Regional Council on 1300 362 242. Heavy rain has led to rapid rises in Wild River Dam. Water is now 1m below crest. Evacuate to higher ground NOW. More info: local radio, TRC 1300 362 242.

Stand Up 3 No communications or notifications required at this trigger as evacuation should have already been undertaken.

Stand Down Storage water level dropping to below 1046.9 m AHD (300 mm over the spillway).

PAR (each of the evacuated groups)

EAP Officer to contact via phone following consultation with MWW and LDC.

We would like to advise the evacuated groups that the emergency has ended and thank you for your cooperation.


Wild River Dam


Table 3: Flood Event – Communication Table Activation Status Trigger for Communications / Notifications Contact Groups (in

Priority Order) Method Message Code Message Text

MWW LDC

EAP Officer to contact via phone.

I am advising you that each of the evacuated group has been contacted and advised that the emergency has ended.

Loss of Radio Signal (Telemetry)

Loss of communications and high risk of increasing level over spillway.

MWW Emergency Emergency this is an important message from Tablelands Regional Council. Radio signal to monitoring equipment at the Wild River Dam has been lost. Heavy rainfall has led to rapid rises in the Wild River Dam. Assume worst case scenario as a precaution. Please collect your evacuation kit and move to a place of safety on higher ground. For more information tune into local radio or call Tablelands Regional Council on 1300 362 242. Radio signal to monitoring equipment at Wild River Dam lost. Heavy rain has led to rapid rises in Wild River Dam. Assume worst as a precaution. Evacuate to higher ground NOW. More info: local radio, TRC 1300 362 242.


Wild River Dam


7.3 EARTHQUAKE

An earthquake may result in damage to the dam including but not limited to: deformation of the spillway

deformation of the embankment

landslide into the dam. An earthquake-induced failure of the dam can occur when the storage level is at or below FSL, and when the dam is spilling. In many cases there will be no warning and hence no Alert or Lean Forward level. The recently installed CCTV camera at the dam allows remote monitoring of the dam and appropriate escalation of the EAP activation.

In the situation where an earth tremor may cause a deformation of the spillway and/or embankment and/or a landslide into the dam there is no automated early warning system. The only immediate method of detection (other than being within the zone of tremor and feeling it) at present would be if the SCADA or CCTV system was being monitored during the event or if personnel were on site at that time. Travel time of the failure wave from the dam to the first PAR is less than 10 minutes. Earthquake alerts when received by the LDC and passed on to the EAP Officer. If an earthquake is felt in the region, a visual check of the dam is to be undertaken immediately via the CCTV camera. The dam is to be inspected by the EAP Officer at the earliest possible time. Should this inspection identify any changes to the dam or signs of potential failure, further inspection is to be undertaken by the Manager Water and Waste and/or a Dam Safety Consultant. 7.3.1 Preventative actions for an Earthquake Event:

Routine inspections of the dam to identify any indications that there is an increased likelihood of failure following an earthquake.

Public awareness of the evacuation plan.

Initial EAP training and continuing annual EAP refresher training and annual Scenario Event exercises organised by MWW.

Issue individual Evacuation Plans to PAR affected by a Sunny Day Failure, and in particular to each house visited explain:

- What to do.

- Where to go.

- When.

Ensure that all identified PAR are aware of the implications of a Sunny Day Failure event, how they may be affected, where they (as individual groups) are to go and what they have to do at short notice if notified to evacuate.


Contact details in the EAP confirmed, and if necessary updated, each year by 1 September for all PAR affected by a Sunny Day Failure.

Ensure all identified PAR are signed-up for the Early Warning Network service with TRC which provides voice, SMS and email messaging.


Wild River Dam


Figure 10: Earthquake Flowchart


Wild River Dam


Table 4: Earthquake Event – Emergency Action Table

Activation Status Alert Lean Forward Stand Up Stand Down Activation Trigger Earthquake reported or felt in area.

Intensity less then 5MMI And No changes detected during surveillance inspection

Earthquake reported or felt in area. Intensity greater than or equal to 5MMI And Changes detected during surveillance inspection

Earthquake reported or felt in the area And Failure in progress or likely, increased seepage

Risk assessment has determined that failure risk has reduced


EAP Officer: 1. Notify MWW 2. Visual Check of CCTV 3. Inspect the dam, spillway and

embankment, assess, monitor and inform MWW.

4. Report to MWW 5. Record data and log book entry 6.

EAP Officer: 1. As per previous activation status 2. Notify MWW of change of EAP activation

status. 3. Inspect, assess, monitor and maintain

communication with MWW. 4. Continue / start remedial action and / or

load reduction if directed.

EAP Officer: 1. As per previous activation status 2. Relocate to safe ground, continue

observing situation and relaying information to MWW.

EAP Officer: 1. Forward event report to MWW 2. Return to scheduled inspection regime 3. After the event transfer all data from the

event to the Storage Data Book.

MWW: 1. Notify LDC

MWW: 1. As per previous activation status 2. Activate EAP 3. Inspect, assess and determine available

timeframe for potential / continuing remedial works and/or load reduction, if practical.

4. Notify LDC evacuation may be required, and direct to Notify the PAR

5. Notify GMIS and CEO that emergency situation has developed.

MWW: 1. As per previous activation status 2. Notify 000 that evacuation is required. 3. Notify LDC evacuation is required. 4. Notify GMIS and CEO that emergency

situation has further developed.

MWW: 1. Authorise notification of residents that

event is over and deactivate the EAP. 2. Prepare EER. 3. Remedial works undertaken to significantly

mitigate risk.

LDC: 1. Coordinate the response and implement

the disaster management plans as required.



2. Notify PAR



2. Notify PAR




EAP Officer: 1. MWW

EAP Officer: 1. MWW

EAP Officer: 1. Emergency services (000) 2. MWW

EAP Officer: 2. MWW 3. PAR

MWW: 1. LDC

MWW: 1. Police Communication Centre, Cairns 2. LDC 3. GMIS 4. CEO 5. Councillor for division 6. DDS (DNRME)

MWW: 1. Police Communication Centre, Cairns 2. Emergency Services (000) 3. LDC 4. GMIS 5. CEO 6. Councillor for division 7. DDS (DNRME)


LDC: LDC: 1. PAR

LDC: 1. PAR

LDC:

CEO: CEO: 1. Mayor

CEO: 1. Mayor

CEO: 1. Mayor



Wild River Dam


Table 5: Earthquake Event - Communication Table

Activation Status Trigger for Communications / Notifications Contact Groups (in Priority Order)

Method Message Code Message Text

Alert Earthquake reported or felt in area. Intensity less then 5MMI And No changes detected during surveillance inspection

Not Applicable Not Applicable Not Applicable Not Applicable

Lean Forward Earthquake reported or felt in area. Intensity greater than or equal to 5MMI OR Changes detected during surveillance inspection

PAR Phone (Voice Message) via: • Early Warning Network



Emergency Emergency this is an important message from Tablelands Regional Council. Stability issues have been identified at Wild River Dam which may result in failure and rapid flooding. Please prepare your evacuation kit and identify a place of safety on higher ground. Be prepared to evacuate at short notice. For more information tune into local radio or call TRC on 1300 362 242. Stability issues at Wild River Dam. May lead to dam failure and rapid flooding. Be prepared to evacuate. More info on local radio or TRC on 1300 362 242.

Stand Up Earthquake reported or felt in the area And Failure in progress or likely, increased seepage




Emergency Emergency this is an important message from Tablelands Regional Council. The Wild River dam has suffered an extreme failure. Rapid flooding is imminent. Please collect your evacuation kit and move to a place of safety on higher ground immediately. This situation poses a significant threat to life and property. Your safety is in jeopardy if you do not act now. For more information tune into local radio or call Tablelands Regional Council on 1300 362 242. Wild River Dam has FAILED. Rapid flooding is imminent. Significant threat to life. EVACUATE to high ground NOW. More info: local radio, TRC 1300 362 242.

Stand Down Risk assessment has determined that failure risk has reduced


EAP Officer to contact via phone


MWW LDC




Wild River Dam


7.4 TERRORIST OR HIGH ENERGY IMPACT

A terrorist threat, or activity, could increase the likelihood of dam failure through a high energy impact (non-natural events), or deliberate, accidental or vandalism actions against the dam structure.

The approach of this plan is to monitor any threat or damage remotely until the threat is abated and it is safe to inspect the dam to identify any potential damage. Travel time of the failure wave from the dam to the first PAR is less than 10 minutes. Therefore, evacuation is advised should any damage be suspected. The recent installation of remote monitoring equipment at the dam provides a significant improvement in the ability to monitor the dam for potential damage without accessing the dam itself. The available remote monitoring equipment includes a CCTV camera that can be remotely operated to zoom into the dam embankment, spillway, v-notch weir, and dam access. Additionally, dam water levels are now monitored via three separate mechanisms with data transmitted via the SCADA system and via the 3G/4G network. 7.4.1 Preventative actions for Terrorism or High Energy Impact:




- What to do.

- Where to go.

- When.






Wild River Dam


Figure 11: Terrorism or High Energy Impact Flowchart


Wild River Dam


Table 8: Terrorist or high energy impact – Emergency Action Table Activation Status Alert Lean Forward Stand Up Stand Down Activation Trigger Not Applicable Possible terrorist activity observed or threat

received Explosion, terrorist action or high energy impact observed at dam

Risk assessment performed and risk deemed to be removed


Not Applicable. EAP Officer: 1. Notify Police on 000 2. Notify QPS Counter Terrorism Liaison

Officer 3. Notify National Security Hotline 4. Notify MWW 5. Monitor situation remotely via CCTV 6. When deemed safe by Police, inspect dam

under Police escort. 7. Photo record 8. Log book record

EAP Officer: 1. As per previous activation level 2. Notify Police on 000 that evacuation is

required

EAP Officer: 1. Prepare event report and supporting data

to MWW

MWW: 1. Notify GMIS and CEO that emergency

situation has developed. 2. Notify LDC

MWW: 1. Notify GMIS and CEO that emergency

situation has further developed. 2. Notify LDC


event is over and deactivate the EAP. 2. Prepare EER. 3. Remediation works undertaken to

significantly mitigate risk.





2. Notify PAR



2. Notify PAR Notifications: by whom & to whom

EAP Officer: 1. Emergency services (000) 2. QPS Counter Terrorism Liaison Officer 3. National security hotline on 1800 123 400 4. MWW

EAP Officer: 1. Emergency services (000) 2. QPS Counter Terrorism Liaison Officer 3. National security hotline on 1800 123 400 4. MWW

EAP Officer: 1. MWW

MWW: 1. LDC 2. Police Communication Centre, Cairns 3. GMIS 4. CEO 5. Councillor for division 6. DDS (DNRME)

MWW: 1. LDC 2. Police Communication Centre, Cairns 3. GMIS 4. CEO 5. Councillor for division 6. DDS (DNRME)


LDC: 1. PAR

LDC: 1. PAR

CEO: 1. Mayor

CEO: 1. Mayor

CEO: 1. Mayor


Wild River Dam


Table 9: Terrorist or high energy impact - Communication Table



Alert Not Applicable Not Applicable Not Applicable Not Applicable Not Applicable

Lean Forward Not Applicable Not Applicable Not Applicable Not Applicable Not Applicable

Stand Up Explosion, terrorist action or high energy impact observed at dam





Stand Down Remedial works completed and risk of failure drops significantly.




MWW LDC




Wild River Dam


7.5 SUNNY DAY FAILURE

A “Sunny Day” failure is defined as failure of the dam and the release of water downstream, when there is low or no inflow to the dam from rainfall events. This type of dam failure is unexpected and can occur with little or no warning. A “Sunny Day” failure may be as a result of any or a combination of the following: Embankment stability issues: increased seepage, new visible signs of seepage and particularly

evidence of sediment transport (i.e. cloudy flow) as this can be an indication of piping.

Signs of distress in embankment such as cracking and/or deformation and/or evidence of material having slid off embankment.

Appearance of sinkholes, soft spots and ‘boggy areas’

abnormal instrument readings (piezometers indicating higher hydrostatic pressures)

differential movement or settlement

increasing rates of seepage or development of new seepage paths

piping of the embankment

Earthquakes and Landslides.

Terrorist or high energy impact (non-natural events), including deliberate, accidental or vandalism actions against the dam structure.

Actions for earthquake events and terrorism are outlined in Sections 7.3 and 7.4. This section outlines actions and communications for all other potential Sunny Day Failure events. The recent installation of remote monitoring equipment at the dam including a CCTV camera allowing remote visual inspection of the condition of the dam and the seepage flow over the v-notch weir seeks to improve the EAP activation and escalation process. However, in many of these cases there will be no warning and hence no Alert or Lean Forward level, with immediate escalation to Stand Up with associated warnings and evacuations. This is particularly important as travel time of the failure wave from the dam to the first PAR is less than 10 minutes. The dam is inspected weekly for signs of structural defects and increased seepage. The likelihood of this type of failure is lessened with good management practices. However if during an inspection increased seepage/changes in turbidity of seepage was observed and verified then the procedures detailed in the following tables would be followed including inspection by an RPEQ. 7.5.1 Preventative actions for a Sunny Day Failure Event:

Routine inspections of the dam to identify any indications that there is an increased likelihood of failure.




- What to do.

- Where to go.

- When.



Wild River Dam






Wild River Dam


Figure 12: Sunny Day Failure Flowchart


Wild River Dam


Table 6: Sunny Day Failure Event – Emergency Action Table Activation Status Alert Lean Forward Stand Up Stand Down Activation Trigger Identification during routine inspection of initial

signs of embankment distress such as cracks. OR Abnormal seepage increases / changes in turbidity of seepage: around the outlet works and potentially via pathways through dam wall.

Cracking becoming significant to the point where stability may be starting to be impaired. OR Seepage rate begins to further increase / or further increases in turbidity of seepage.

Loads on embankment increasing or cracking / deformation or seepage is increasing to a state where the safety of the dam is significantly impaired.

Remedial works completed and risk of failure drops significantly.


EAP Officer: 1. Notify MWW that EAP has been enacted

and maintain communications. 2. Inspect, assess, monitor and inform MWW. 3. Undertake or supervise remedial action if

directed.

EAP Officer: 1. Notify MWW of change of EAP activation

status and maintain communications. 2. Inspect, assess, monitor and maintain

communication with MWW. 3. Continue / start remedial action and / or

load reduction if directed.

EAP Officer: 1. Notify MWW of change of EAP activation

status. 2. Relocate to safe ground, continue

observing situation and relaying information to MWW.

EAP Officer: 1. Notify MWW that remedial works have

been completed and risk of failure has dropped significantly.

2. On the Log of Events / Actions Sheet and the Record of communications Sheet keep a daily running record of all actions / events and telephone calls to and from the MWW, Backup EAP Officers and other personnel.

3. After the event compile an Emergency Event Report and forward unedited copies to the MWW.

4. After the event transfer all data from the event to the Storage Data Book.

MWW: 1. Inspect and determine level of risk of failure

(storage level, inflow, seepage, etc.) 2. Determine available timeframe for potential

remedial works, if practical. 3. Determine if load reduction is required and /

or possible. 4. Notify LDC, GMIS and CEO if deemed

necessary

MWW: 1. Inspect, assess and determine available

timeframe for potential / continuing remedial works and/or load reduction, if practical.

2. Notify LDC evacuation may be required. 3. Notify GMIS and CEO that emergency

situation has developed.

MWW: 1. Notify 000 that evacuation is required. 2. Notify LDC evacuation is required. 3. Notify GMIS and CEO that emergency

situation has further developed.


event is over and deactivate the EAP. 2. Prepare EER. 3. Remedial works undertaken to significantly

mitigate risk.





2. Notify PAR



2. Notify PAR




EAP Officer: 1. MWW

EAP Officer: 1. MWW

EAP Officer: 1. MWW

EAP Officer: 1. MWW 2. PAR

MWW: 1. LDC 2. GMIS 3. CEO 4. Councillor for division 5. Police Communication Centre, Cairns 6. DDS (DNRME)


MWW: 1. Police Communication Centre, Cairns 2. Emergency Services (000) 3. LDC 4. GMIS 5. CEO 6. Councillor for division 7. DDS (DNRME)


LDC: LDC: 1. PAR

LDC: 1. PAR

LDC:

CEO: 1. Mayor

CEO: 1. Mayor

CEO: 1. Mayor

CEO: 1. Mayor



Wild River Dam


Table 7: Sunny Day Failure - Communication Table



Alert Not Applicable Not Applicable Not Applicable Not Applicable Not Applicable Lean Forward Cracking becoming significant to the point

where stability may be starting to be impaired. OR Seepage rate begins to further increase / or further increases in turbidity of seepage.




Emergency Emergency this is an important message from Tablelands Regional Council. Stability issues have been identified at Wild River Dam which may result in failure and rapid flooding. Please prepare your evacuation kit and identify a place of safety on higher ground. Be prepared to evacuate at short notice. For more information tune into local radio or call TRC on 1300 362 242. Stability issues at Wild River Dam. May lead to dam failure and rapid flooding. Be prepared to evacuate. More info on local radio or TRC on 1300 362 242.

Stand Up Loads on embankment increasing or cracking / deformation or seepage is increasing to a state where the safety of the dam is significantly impaired.





Stand Down Remedial works completed and risk of failure drops significantly.




MWW LDC




Wild River Dam


7.6 RESERVOIR WATER QUALITY (TOXIC SPILL/ ALGAL BLOOM WITHIN CATCHMENT

AREA)

Any water quality contamination events are covered under Tablelands Regional Council’s Drinking Water Quality Management Plan which includes the Herberton Water Supply Scheme. As the Dam is not open to the public for recreational use, there is no need to include a water quality contamination event as part of this document.


Wild River Dam


8. WARNINGS AND NOTIFICATIONS

8.1 WARNING AND NOTIFICATION MECHANISMS

The owner of the dam is responsible for issuing emergency warnings to the Population at Risk (PAR). Locally this is undertaken in collaboration with the Local Disaster Coordinator (LDC) who will issue the notification and warning messages to the affected PAR. Four (4) key options are available for notification and warning of the PAR: An alert via the Early Warning Network system subscribed to by TRC;

An alert via the State-wide Emergency Alert (EA) system;

Media releases / public announcements; or

Direct contact i.e. door-knocking (if possible). The Early Warning Network (EWN) is an opt-in system. This means that residents can sign up to be included in the system to be added to a Wild River Dam PAR group within TRC’s system. However, as the intended use of contact information is to protect public safety, TRC have opted to include the PAR contacts in an additional distribution system, updated by TRC regardless of whether the individuals have ‘opted in’. Prior to 1 September each year, pre-wet season communications is provided to all affected PAR. A warning using this system can be sent directly by the LDC and generally takes around 20 minutes to set up. The State-wide EA system alerts all landline and mobiles located within a spatial polygon at a point in time. A warning using this system generally takes around 10 minutes for the LDC to organise and then it has a lead time of approximately 30 minutes before the warning is delivered as the message has to be approved and sent by the State. This has to be factored into the available evacuation time. Direct contact (i.e. door knocking) may be quicker in some instances, if police or SES are located near the PAR. However, in utilising these warning systems, it is important to note that these warning mechanisms may not provide effective warning to all PAR as: the access to the first 2 properties with PAR will be cut during event minor flood events;

the travel time for a failure wave from the dam to the first 2 properties with PAR is less than 10 minutes; and

the travel time for a failure wave from the dam to Herberton and Wondecla is in the order of 1-1.5 hours and 2-2.5 hours, respectively.

8.2 WARNING AND NOTIFICATION PROCESSES

If a notification or warning is required to be sent to affected PAR, the process is to contact the LDC and make the request. Both the Early Warning Network and the State-wide EA system will be used to send out one of the pre-prepared messages in the following sections. A pre-created EA polygon map and the text of these messages have been pre-lodged with the SDCC watch desk and will be activated by the LDC. In late 2018, TRC installed a series of remote monitoring equipment at the dam. This allows remote electronic dam water level monitoring, rain gauge monitoring and seepage monitoring. TRC continues to investigate the feasibility of utilising this equipment to trigger an automated alarm at a pre-set sequence of events should the Wild River dam should show signs of a pending failure or overtopping. However, at present an automated warning system is not available for Wild River Dam.


Wild River Dam


8.3 PRE-PREPARED MESSAGES

Pre-prepared messages have been developed for SDF and Flood Events, and also in the event of loss of radio signal during either event, to advise PAR to “prepare for evacuation” or to “evacuate immediately”. VOICE, TEXT messages have been prepared for the state-wide Emergency Alert system whilst VOICE, TEXT and EMAIL messages have been prepared for the EWN. 8.3.1 Sunny Day Failure – Prepare to Evacuate

Dam Failure Possible – Prepare to Evacuate (VOICE) Emergency Emergency this is an important message from Tablelands Regional Council. Stability issues have been identified at Wild River Dam which may result in failure and rapid flooding. Please prepare your evacuation kit and identify a place of safety on higher ground. Be prepared to evacuate at short notice. For more information tune into local radio or call TRC on 1300 362 242. Dam Failure Possible – Prepare to Evacuate (TEXT) Stability issues at Wild River Dam. May lead to dam failure and rapid flooding. Be prepared to evacuate. More info on local radio or TRC on 1300 362 242. 8.3.2 Sunny Day Failure – Evacuate Now

Dam Failure – Evacuate Now (VOICE) Emergency Emergency this is an important message from Tablelands Regional Council. The Wild River dam has suffered an extreme failure. Rapid flooding is imminent. Please collect your evacuation kit and move to a place of safety on higher ground immediately. This situation poses a significant threat to life and property. Your safety is in jeopardy if you do not act now. For more information tune into local radio or call Tablelands Regional Council on 1300 362 242. Dam Failure – Evacuate Now (TEXT) Wild River Dam has FAILED. Rapid flooding is imminent. Significant threat to life. EVACUATE to high ground NOW. More info: local radio, TRC 1300 362 242. 8.3.3 Flood Events – Prepare to Evacuate

Dam – Rainfall (Cyclone) Events – Prepare to Evacuate (VOICE) Tablelands Regional Council wish to inform you that a cyclone is forecast to affect the Herberton region in the coming days. Torrential rain is likely and Tablelands Regional Council advise you to consider evacuating your property to higher ground or risk access to your property being cut off. Dam - Rainfall (Cyclone) Events – Prepare to Evacuate (TEXT) Cyclone forecast to affect Herberton region in coming days. Consider evacuation or risk access to your property being cut off. More info: local radio, TRC 1300 362 242 Dam - Rainfall Events – Prepare to Evacuate (VOICE) Emergency Emergency this is an important message from Tablelands Regional Council. Heavy rainfall has led to rapid rises in the Wild River Dam. Water height has now exceeded 1048.1 metres AHD. The critical height for the Wild River Dam is 1050.15 metres AHD (Crest Level). Please prepare for evacuation and await further instruction. For more information tune into local radio or call TRC on 1300 362 242.


Wild River Dam


Dam - Rainfall Events – Prepare to Evacuate (TEXT) Heavy rain has led to rapid rises in Wild River Dam. Water is now 2m below crest. Be prepared to evacuate. More info: local radio, TRC 1300 362 242. 8.3.4 Flood Events – Evacuate Now

Dam - Rainfall Events – Evacuate Now (VOICE) Emergency Emergency this is an important message from Tablelands Regional Council. Heavy rainfall has led to rapid rises in the Wild River Dam. Water height has now exceeded 1049.1 metres AHD. The critical height for the Wild River Dam is 1050.15 metres AHD (Crest level). Please collect your evacuation kit and move to a place of safety on higher ground. For more information tune into local radio or call Tablelands Regional Council on 1300 362 242. Dam - Rainfall Events – Evacuate Now (TEXT) Heavy rain has led to rapid rises in Wild River Dam. Water is now 1m below crest. Evacuate to higher ground NOW. More info: local radio, TRC 1300 362 242. 8.3.5 Flood Events – Loss of Radio Signal - Evacuate Now

Dam - Rainfall Events Loss of Radio Signal – Evacuate Now (VOICE) Emergency Emergency this is an important message from Tablelands Regional Council. Radio signal to monitoring equipment at the Wild River Dam has been lost. Heavy rainfall has led to rapid rises in the Wild River Dam. Assume worst case scenario as a precaution. Please collect your evacuation kit and move to a place of safety on higher ground. For more information tune into local radio or call Tablelands Regional Council on 1300 362 242. Dam - Rainfall Events – Evacuate Now (TEXT) Radio signal to monitoring equipment at Wild River Dam lost. Heavy rain has led to rapid rises in Wild River Dam. Assume worst as a precaution. Evacuate to higher ground NOW. More info: local radio, TRC 1300 362 242. 8.4 INDIVIDUAL EVACUATION PLANS

Individual Evacuation Plans (Appendix D) have been prepared and reviewed for distribution to residents at risk. They will be advised to implement their Evacuation Plan if they are provided warnings or become aware of or suspect that an emergency event has occurred. An annual education program that may include community meetings, door knocking and writing to the PAR will be undertaken to ensure that residents at risk at kept aware of their risks and their plan and are updated on any changes to the EAP. As part of this process, residents will be signed up to Council’s Early Warning Network to receive faster information alerts and warning to evacuate. 8.5 END OF EVENT

The EAP Officer must (after receiving advice from the LDC): Contact each of the evacuated groups and advise them that the emergency has ended, and

thank them for their cooperation.

Advise MWW and LDC that each evacuated group has been contacted and advised that the emergency has ended and await further instructions.

Provide information on support available to affected residents and signposting to recovery services if required.


Wild River Dam


Debriefing and identifying lessons to improve future response operations.


Wild River Dam


9. EVENT REPORTING

9.1 STORAGE DATA BOOK

EAP Officer shall ensure that events and appropriate data are recorded in the Storage Data Book. All new entries are to be copied and forwarded to General Manager Infrastructure Services monthly. Entries shall be a record of water levels, weather observations, inspections, actions that are carried out, telephone conversations that are related to the emergency event, and comments identifying problems and unusual events. All entries shall be written legibly, unedited and signed by the person making the entry. Errors made shall be struck out and initialled. The Storage Data Book shall be kept permanently in the EAP Officer work residence. It must be available on request and its location known to, EAP Backup Officers, Manager Water & Waste and General Manager Infrastructure Services. 9.2 EMERGENCY EVENT REPORT

The EAP Officer shall prepare an Emergency Event Report after each emergency event and forward it to the Manager Water and Waste within 15 days of the event. The report shall contain (at least):

(a) A description of the event summarised from the Storage Data Book.

(b) Description of any observed damage or other consequences.

(c) Photographs.

(d) A summary of data recorded during the event and the times of these recordings such as,

- rainfall,

- water level within the storage, and

- seepage flows and observations (if applicable).

(e) Details of communication which took place during the emergency.

(f) Comment on the adequacy of the Emergency Action Plan.

(g) Any recommendations or suggested changes to the Emergency Action Plan.

(h) Any further comments considered necessary. The Manager Water and Waste shall provide a report on the event to the Director, Dam Safety within 30 days of the event.


Wild River Dam


10. REVISION OF EVACUATION PLANS

Each year before the end of August the Manager Water and Waste shall contact each property owner at risk of inundation to verify contact details and revise the evacuation plan in consultation with the EAP Officer and LDC. The revised plan shall be forwarded to General Manager Infrastructure Services.

The revised plan shall be forwarded to the CEO of TRC for review and acceptance. If substantive changes have been made, a formal review process in accordance with Section 352H of the Water Supply (Safety and Reliability) Act 2008 is required.

The CEO is to approve the evacuation plans. Once approved, the General Manager Infrastructure Services shall authorise postage of revised plans to each resident, or alternatively the revised plans can be hand delivered as part of the annual consultation process to alert residents.


Wild River Dam


11. REFERENCES

Disaster Management Act 2003

Disaster Management Regulation 2014

Emergency Action Planning for Referable Dams (DNRME, 2013)

Guidelines for Failure Impact Assessment of Water Dams (DNRME, 2012)

Queensland Dam Safety Management Guidelines (DNRM, 2002)

Tablelands Local Disaster Management Plan V5.3 (TRC, 2018)

Water Supply (Safety and Reliability) Act 2008

Wild River Dam Failure Impact Assessment Report (SunWater, 2004)

Wild River Dam Failure Impact Assessment Report (Sinclair Knight Merz, 2013)

Wild River Dam Safety Report (Sinclair Knight Merz, 2014)Wild River Dam - Operations and Maintenance Manual

Wild River Dam Seismic Hazard Assessment (Seismology Research Centre – August 2018)

Wild River Dam - Standard Operating Procedures

Wild River Dam - Storage Data Book

Workplace Health and Safety Act 2011


Wild River Dam

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APPENDIX A

DATA COLLECTION


Wild River Dam

Version 7: 31/07/2019

REPORT FORMAT NATURE OF THE EVENT

Describe the event (e.g. spillway discharge, earthquake, chemical spill, etc)

COMMENCED DATE _____ / _____ / __________ TIME ___________

FINISHED DATE _____ / _____ / __________ TIME ___________

DESCRIPTION OF THE EVENT

Describe in your own words the lead up to and progress of the event (e.g. a spillway discharge)

Include such information as listed below: • Weather conditions and rainfall in the catchment • The rate of rise of the storage • When the spillway was overtopped • Date and time of highest level • Briefly describe any immediate downstream damage caused by the discharge • Include any other information considered relevant

STATISTICS

Total inflow ___________ Megalitres Total discharge ___________ Megalitres Capacity of storage prior to inflow ___________ % Volume prior to inflow ___________ Megalitres Maximum inflow ___________ Megalitres per day Maximum discharge ___________ Megalitres per day

EVENT PROGRESS

Briefly describe the daily rate of storage rise, time to peak level, and weather conditions.

Attach copies of the Spillway Level Versus Time Graph, the Communications Record Sheet, and the Log of Events / Actions Sheet.

GENERAL COMMENTS

Include in this section any observations or comments regarding the event, such as equipment malfunctions, safety issues or any suggestions which may improve monitoring and reporting of the event.

DAMAGE REPORT

Detail any tail water damage to the embankment or stream bank in the immediate area of the dam. Attach photos.

ATTACHMENTS

• Photos / video of the event • Spillway Level versus Time Graph • Communications Record Sheet • Log of Events / Action Sheet

Signed: _________________________ Designation: __________________________

Date: _____ / _____ / __________


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Table A - 1 Record of Rainfall During a Flood

Date Time Rainfall (mm)

Daily Total (mm) Comments


Wild River Dam

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Table A - 2 Storage Level Versus Time

Stor

age L

evel

(m A

HD)

1056.00

1054.00

1052.00

1050.00

1048.00

1046.00

1044.00

1042.00

1040.00 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Time in Hours

Full Supply Level

EL 1046.6 m

Dam Crest Level EL 1050.15 m


Wild River Dam

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Table A - 3 Log of Actions/Events

Date Time Event Description/Action carried out Record entered by


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Table A - 4 Record of Communication

Date Time Phone No Contact Person Event Description/Action carried out Record entered by


Wild River Dam

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APPENDIX B

CATCHMENT BOUNDARY


Wild River Dam

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Wild River Dam

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APPENDIX C

POTENTIAL PROBLEM IDENTIFICATION


Wild River Dam

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TYPE OF DEFICIENCY LOOK FOR

SEEPAGE A water flow or sand boil on the lower portion of the downstream slope or toe area, especially at the groins.

Quantity/quality of drain outflows, seepage and its source(s).

Location, type and extent of deteriorated concrete.

Extent of moist, wet or saturated areas.

Wet areas or areas where the vegetation appears greener or lusher in the toe area.

An increase in the amount of water being released from toe drains or through the v-notch weirs. (Remember to take into account changes in the reservoir level.)

Turbidity or cloudiness of the seepage.

Any change in conditions.

CRACKING/MOVEMENT Location, length, displacement and depth of cracks.

Desiccation Cracking: A random honeycomb pattern of cracks usually found on the crest and the downstream slope.

Transverse Cracking: Cracks that are perpendicular to the length of the dam usually found on the crest.

Longitudinal Cracking: Cracks that are parallel to the length of the dam. Longitudinal cracks may be associated with stability problems in the slopes.

Cracking concrete deterioration.

Disintegration.

Spalling.

Efflorescence.

Drummy concrete.

Popouts.

Pitting.

Scaling.

Surface defects.

Misalignment.

Differential movement in cracks.

Conditions of joints.

INSTABILITY Slides on the upstream or downstream slopes.

Bulging, especially at the toe of the dam.

DEPRESSIONS Misalignment in the crest and embankment slopes found by sighting along fixed points.

Sinkholes found by checking and probing each depression.

Remember, sinkholes have steep, bucket like sides while minor depressions have gently sloping, bowl like sides.


Wild River Dam

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TYPE OF DEFICIENCY LOOK FOR

MAINTENANCE CONCERNS

Inadequate Slope Protection: Check for bald areas or areas where the protection is sparse or damaged.

Surface Runoff Erosion: Check for gullies or other signs of erosion. Make sure to check the low points along the upstream and downstream shoulders and groins since surface runoff can collect in these areas.

Inappropriate Vegetative Growth: Check for excessive and deep rooted vegetative growth.

Debris: Check for debris on and around the dam, especially near outlet works or spillway inlets.

Animal Burrows: Check for damage caused by burrowing animals.

Note: This tabulation adapted from Queensland Dam Safety Management Guidelines-February 2002. WHEN TO GET FURTHER ASSISTANCE Several of the deficiencies covered above are very serious. If you observe any of the issues listed below, you should advise the Manager Water and Waste immediately:

• Sand boils or turbid seepage. • Seepage that has increased since the last inspection (taking the reservoir level into

consideration). • Cracking that extends below the reservoir level or potential reservoir level. • Transverse and longitudinal cracking. • Deep seated slides or bulging associated with slides. • Sinkholes or other large depressions. • Deep rooted vegetation that might need to be removed.

If you are unsure whether or not a condition poses a threat to the safety of the dam, you should discuss your findings with the Manager Water and Waste.


Wild River Dam

Version 7: 31/07/2019

APPENDIX D

INUNDATION MAPS, POPULATION AT RISK CONTACT DETAILS & EVACUATION PLANS


Wild River Dam

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Wild River Dam

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Evacuation Plans -

Moomin SidingRd

Moomin Rd Deba

ndga

ryRd

1AP19246

217CWL342

179NPW922

63SP113985

290CWL35171SP265020

2SP265020

160CWL366

211CWL358

1RP733446

2RP733446

Wild River Dam Evacuation AdviceSunny Day Failure Flood Extent - Map 5

©2019 Tablelands Regional Council (TRC). Based on or contains data provided by TRC;the State of Queensland (Department of Natural Resources and Mines) [2019]; and the Commonwealth of Australia (CSIRO; and Department of Sustainability, Environment, Water, Population & Communities). In consideration of these agencies permitting use of this data you acknowledge and agree that these agencies give no warranty in relation to the data (including accuracy, reliability, completeness, currency or suitability) and accept no liability including without limitation, liability in negligence) for any loss, damage or costs (including consequential damage) relating to any use of the data. Data must not be used for direct marketing or be used in breach of the privacy laws.

0 100

MetresCoordinate System: GDA 1994 MGA Zone 55

Projection: Transverse MercatorDatum: GDA 1994

Project: 2019-057Page Size: A4Date: 4/07/2019

:

Evacuate away from flood extent upon notification.

Moomin Rd

Atherton-Herberton Rd

217CWL342

10M2973

202M2971

63SP113985

9M2973

197AP1009

72SP113986

290CWL3517

201M2971

12M2973

102M2971101M2971

103M2971

1AP19246

203M2971

11M2973

211CWL358



0 60




:

Evacuate away from flood extent upon notification.Evacuate to clearing at intersection of Moomin Rd and

Atherton-Herberton Rd.


194FTY1870

252CWL3185

290CWL3517

197AP1009

201M2971

43H25337

1AP19246

174CWL3185

72SP113986

211CWL358

1MPH24923



0 100




:


Rose

L

Morris Rd

Todd

St

Rose

St

Emma

St

Florence St

2MPH34194

1MPH24690

2RP738091

28H25326

ASP227808

61H25320

3RP7004002RP700400

CSP120065

ARP736790

14MPH3273273H25320

255CWL3295

10SP292867

1MPH2653

304CWL3609

1RP700399

89SP113988

DSP179216

91SP113989

ASP179216

1MPH34194

254CWL3271

1MPH2485

1RP700409

BSP227808

2RP700398

1RP738091

1SP292867

1RP700402

1RP700400

1RP700398

3RP700402

2RP700402

92SP11398993SP113989

2RP700404

1RP700405

3RP700399

277CP898468

71H25320

20RP838246

2RP845206

72H25320

21RP838246

2RP700410

1MPH31436

5RP7004021RP700404

2RP700399

2RP700406

1MPH2452

3RP845206

63USL39287

27H25326

22H25326

1MPH24714

1MPH2461

1RP7004032RP700403

3RP7004012RP700401



0 60




:


James Rd

Rolley Rd

Longlands Gap-Herberton Rd

104SP113990

1SP202300

1MPH24710

3224CWL839136

2RP700365

211RP860904

208H25327

1MPH2454

1MPH2486

2MPH24788

103SP113991

2MPH2643

210RP860904

2RP700369

2RP700370

1RP700370

275SP106052

102SP113991

207H25327

1RP700369

6H25328

1MPH2457

3RP7003651MPH2643

105SP113990

1MPH247181RP818026

1MPH24788

2RP818026

2RP700366

212H25327

7H25347206AP23116

1MPH30075

4179CP862888

1MPH24752

2RP700367

1RP700367

211H25327

1MPH2458

3MPH2486

2MPH33500

2SP202300

1MPH33500

3RP818026

206H25327

1RP700365

1RP700366



0 75




:

Evacuate away from flood extent upon notification.Evacuate along James Rd and Longlands Gap-Herberton Rd

to assemble at the end of No Name Rd.

MoominSiding Rd

Moomin Rd

Deba

ndga

ryRd

Athe

rton-H

erbert

on Rd

2SP265020

1SP265020

12SP181651

217CWL342

290CWL3517

63SP113985

197AP1009

160CWL366

1AP19246

1RP733446

211CWL358

179NPW922

2RP733446

Wild River Dam Evacuation AdviceProbable Maximum Cascade Failure Flood Extent - Map 5


0 100




:



23MPH32725

194FTY1870

238CWL2104

78CWL331572SP113986

CSP301528

251CWL3315

21MPH32725

3MPH32462

80CWL3317

77RP887716

1MPH32462

178CWL3315

4137CP862884

4235CP862883

22MPH32725

2MPH32462

197AP1009

81CWL3316

26MPH32725

24MPH32725

153CWL2611

25MPH32725

80USL39293

27MPH32725

20MPH32725

79CWL3317

43H25337

290CWL3517

65USL39293



0 100




:


Grant St

Holdcro

ft Dr

Empress Av

Smith Av

Servi

ceRd

Adco

ckCl

Broa

dway

Atherto

n-Herb

erton Rd

167RP902755

13MPH40334

294CWL3523

36MPH33673

238CWL2104

CSP301528

BSP301528

2AP21279

41MPH40823262CWL3451

2MPH2313

3RP883886

44MPH40823

1MPH31633

6RP895432

166RP902755

197AP1009

42MPH40823

2MPH30644

52CWL835581

ARP851417

762SP252379

1CWL804081

5RP895432

8MPH40334

45MPH40823

153CWL2611

2MPH32304

97SP113987

39MPH40823

15RP851417

AMPH40843

77CWL3479

51MPH40843

4RP895432

50CWL835581

43MPH40823

14RP851417

1MPH24775

72SP113986

5CWL835413

302CWL3579

1MPH24773

37MPH40823

38MPH40823

40MPH40823

296CWL3582

1MPH2313

65USL39293



0 60




:


Herbert St

Grant St

Newe

ll St

Serv

ice R

d

Athert

on-He

rberto

n Rd

Broa

dway

167RP902755

150USL39283

4RP884808

4SP217232

9SP237039

BSP301528

2AP4547

2MPH23136CWL3589

248CP895988

6RP912863

761SP252379

1MPH31633

7CWL3606

166RP902755

2MPH24775

1MPH2416 6CWL3539

1MPH2626

2RP880957

10SP174189

ARP851417

11SP174189

762SP252379

4CWL3662

2CWL3662

97SP113987

10SP237039

1CWL3662

15RP851417

4046CP862881

5RP884808

14RP851417

3CWL3662

7RP912863

1MPH24775

72SP113986

5CWL835413

8MPH35605

1MPH2313



0 50




:


ElwynPhillip

s Memorial Dr

Herbert St

Grant St

Newe

ll St

Forrester Rd

Empress Av

Servi

ceRd

Mary

St

Adco

ckCl

Athert

on-He

rberto

n Rd

Broa

dway

762SP252379

13CP860924

167RP902755

131H25324

21CWL808403

13MPH40334

294CWL3523

150USL39283

1CWL3663

2SP195716

183SP208318

36MPH33673

8RP836149

4RP884808

4048SP137929

4SP217232

9SP237039

2AP21279

7RP851424

2AP4547

51USL39301

2MPH23136CWL3589

BSP137285

9SP206969

8SP206969

248CP895988

71SP250045

4RP749612

14CP860924

47MPH40843

8RP851424

44MPH40823

20CP860925

2MPH2383103CWL3663

3RP880957

6RP912863

4047SP137929

ASP137285761SP252379

1MPH31633

11CP860924

7CWL3606

6CP860924

166RP902755

197AP1009

1CP860925

181SP208318

2MPH30644

21CP860925

2MPH24775

1RP867121

3MPH32702

5MPH32702

1MPH2416

52CWL835581

6CWL3539

1MPH2626

2RP880957

10SP174189

ARP851417

11SP174189

72SP250045

5CP860924

5RP8954329CP860924

8MPH40334

45MPH4082346MPH40843

17CP860925

15CP860924

4CWL3662

182SP208318

2CWL3662

5MPH40308

1MPH40308

2RP867121

2CP8354464MPH32702

10SP237039

1CWL3662

22CP860924

10CP860924

7CP860924

48MPH4084349MPH40843

39MPH40823

15RP851417

AMPH40843

1MPH2383

6MPH40308

94CP865093 4046CP862881

5RP884808

51MPH40843

BSP298402

12CP860924

4RP895432

50CWL835581

8CP860924

6RP851424

43MPH40823

16CP860924

14RP851417

3CWL3662

4CP860925

7RP9128631MPH24775

22CP881025

3RP867121

10CP835446

5CWL835413

8MPH35605

9RP851424

37MPH40823

38MPH40823

296CWL35823SP195716

1MPH2313

9RP836149

1MPH401852MPH33387



0 75




:


Morris Rd

Todd

St

John St

Ellie St

Florence St

River Tce

Per kins St

6H25332

11SP273698

3RP700401

12H2536

2RP700386

1RP7004001RP700399

1RP700385

1RP700384

3RP749311

27H25326

93SP113989

11SP2207523RP700377

1RP700401

3RP7003992RP700399

11H2536

3RP700382

21H25325

14MPH32732

CSP120065

2RP700381

2RP700395

5RP700402

14H2536

23H2536

2RP845206

89SP113988

1MPH2461

2MPH2461

1SP200263

2RP700384

8H2533224H25325

71H2532073H25320

7H25332

63USL39287

17H2536

3RP7004002RP700400

7RP745690

24H2536

61H25320

1MPH2485

DSP179216

412H2531411H2531

ASP179216

409H2531

2RP700402

1RP702088

1RP700380

1RP700409

408H2531

277CP898468

410H2531

1MPH24690

ASP227808

12SP2207522RP700378

1RP700403

15H25362RP700385

1RP700386

1RP700398

21H2536

3RP700381

33SP190315

23H25325

72H25320

1MPH34194

3RP700402

3RP700378

1RP700402

16H25362RP700391

2RP7004042RP700403

2RP700401

88SP113988

1RP700405

5CWL3313

4RP749311

4RP700383

22H25325

304CWL3609

2MPH34194

ARP736790

2RP700380

2RP700398

3RP845206

92SP113989

13H2536

1RP700404

1RP735215

3RP700383 2RP700382

32H25325

413H2531



0 50




:


Morris Rd

Todd

St

Florence St

Rose St

Emma

St

91SP113989

3RP700399

255CWL3295

14MPH32732

CSP120065 2RP845206

89SP113988

1MPH31436

71H2532073H25320

63USL39287

3RP700400

254CWL3271

1MPH2452

10SP292867

1MPH2485

DSP179216

ASP179216

1RP700409

2RP700410

277CP898468

1MPH24690

72H25320

304CWL3609

1MPH34194

1RP700405

1SP292867

2MPH34194

ARP736790

92SP113989



0 50




:


James Rd

Broadley Rd

Dei Rossi Rd

Rolley Rd

Long

lands

Gap-H

erbe

rton R

d

2SP202300

206H25327

1RP700367

102SP113991206AP23116

1SP202300

503H25327

207H25327

1MPH2454

210RP860904

1RP700366

104SP113990

1MPH2643

1MPH24718

1MPH30075

351SP177994

2RP700369

1MPH2458

6H25328

2RP700365

3RP700365

1RP700369

1MPH33500

303H25327

7H25347

1MPH24788

208H25327

2RP700370

2RP818026

3MPH24788

211RP860904

3224CWL8391361MPH24572MPH24788

2RP700366

275SP106052

3RP818026

103SP113991

1MPH24752

1H25328

2MPH2643

212H25327

1RP818026

215SP179203

2MPH33500

1RP700370

2RP700367

211H25327

1RP700365

105SP113990

1MPH247104179CP862888



0 100




:


!

Harding Rd

James Rd

Rolley Rd

J.A.

Daws

onRd

Gollogly Rd

Bajem

a Rd

Tepo

n Rd

Reynolds Rd

Tepon Road Ac cessRd

Long

la nd s

Gap-H

erbe

r ton R

d

2SP202300

2MPH2486

601H25327206H25327

3MPH2542

1MPH24800

214H25327

4MPH14281

2AP3435

102SP113991

206AP23116 305H25327

1SP202300

225N25373

503H25327

207H25327

1MPH30876

210RP860904

1MPH14281

67USL39300

402H25327

2MPH24563MPH2456

2RP700369

1MPH24691

3MPH24800

2MPH24753

215H25327

5MPH14281

2MPH2331

1RP700369

3MPH2486

1RP706565

303H25327

7H25347

208H25327

2RP700370

504H25327

1MPH2571

2MPH247521MPH2456

4SP111956

1MPH24795

211RP860904

2MPH14281

110SP113992

1RL6410

ASP250037

4CP866935

1MPH2642

275SP106052

3RP818026

1MPH2486

213H25327

13MPH14281

103SP113991

1MPH24752

2RP706565

306H25327

2SP1119562MPH24691

212H25327

1AP3435

111SP113992

1MPH2542

304H25327

1RP700370

2MPH2542

211H25327

1MPH2303

1MPH2331

1MPH24710

4179CP862888

2MPH24795

Wondecla



0 100




:


Gollogly Rd

Cleg

horn

Rd

Rolley Rd

Reynolds Rd

7CAR12432

601H25327

2MPH24878

214H25327

2AP3435

305H25327

1RP723404

12CAR1243213CAR12432

402H25327

AAP17361

AAP2143

1MPH24691

1MPH24878

215H25327

403H253271RP706565

144USL39299303H25327

7H25347

608H25327

701H25327504H25327

1MPH2629

1MPH24613

1MPH2304

276H25327

4SP111956

702H25327

505H25327

404H25327

ASP250037

605H25327

213H25327

2RP706565

306H25327

2SP111956

AAP12201

603H25327602H25327

8CAR12432

1AP3435

406H25327

405H25327

304H25327

ASP107799

704H25327

6CAR12432

604H25327

1MPH2303



0 100




:


Harding Rd

Adams Rd

Cassell Rd

Bajema

Rd

5SP219782

9MPH14281

3MPH2542

4MPH14281

AMPH34484

2MPH250241MPH9375

3MPH14281

1MPH14281

67USL39300

1MPH25024

5MPH14281

2MPH2331

1MPH2603

2SP257022

2MPH40072

14CWL836167

41SP265018

1MPH2593

183OL443

1MPH2641

121SP113993

2MPH14281

1MPH34890

1MPH24803

13MPH14281

1SP257022

1MPH40072

111SP113992

1AP12209

7MPH14281

30AP20151



0 100




:


MoominSiding Rd

Moomin Rd

Deba

ndga

ryRd

Athe

rton-H

erbert

on Rd

1AP19246

217CWL342

179NPW922

12SP181651

63SP113985

197AP1009

290CWL3517

1SP265020

2SP265020

160CWL366

211CWL358

1RP733446

2RP733446

Wild River Dam Evacuation AdviceProbable Maximum Flood Extent - Map 5


0 100




:



25MPH32725

77RP887716

3MPH32462

194FTY1870

238CWL2104

20MPH32725

1MPH32462

81CWL3316

290CWL3517

26MPH32725

4137CP862884

251CWL3315

27MPH32725

197AP1009

22MPH32725

65USL39293

4235CP862883

CSP301528

23MPH32725

80CWL3317

43H25337

80USL39293

153CWL261121MPH32725

2MPH32462 24MPH32725

72SP113986

178CWL3315

78CWL3315

79CWL3317



0 100




:


Grant St

Holdcro

ft Dr

Empress Av

Smith Av

Servi

ceRd

Adco

ckCl

Broa

dway

Atherto

n-Herb

erton Rd

6RP895432

166RP902755

167RP902755

238CWL2104

15RP851417

1MPH24775

3RP883886

4RP89543238MPH40823

42MPH40823

50CWL835581

2AP21279

36MPH33673

1MPH31633

2MPH2313

302CWL3579

51MPH40843

1CWL804081

294CWL3523

41MPH40823

762SP252379

97SP113987

8MPH40334

197AP1009

AMPH40843

77CWL3479

65USL39293

CSP301528

BSP301528

44MPH40823 5RP895432 1MPH24773

72SP113986

14RP851417ARP851417

1MPH2313

5CWL835413

13MPH40334

37MPH40823

40MPH40823

52CWL835581

43MPH40823

296CWL3582

153CWL2611

45MPH4082339MPH40823

2MPH32304

262CWL3451

2MPH30644



0 60




:


Herbert St

Grant St

Newe

ll St

Serv

ice R

d

Athert

on-He

rberto

n Rd

Broa

dway

2MPH24775

4SP217232

6CWL3589

166RP902755167RP902755

15RP851417

1MPH24775

10SP237039

1MPH31633

761SP252379

11SP174189

9SP237039

1CWL3662

2MPH2313

4046CP862881

2RP880957

762SP252379

97SP113987

3CWL3662

1MPH2626

248CP895988

4RP884808

5RP884808

BSP301528

150USL39283

6RP912863

6CWL3539

10SP174189

72SP113986

14RP851417ARP851417

4CWL3662

8MPH35605

7CWL3606

1MPH2313

1MPH2416

5CWL8354132AP4547

7RP912863

2CWL3662



0 50




:


ElwynPhillip

s Memorial Dr

Herbert St

Grant St

Newe

ll St

Forrester Rd

Empress Av

Servi

ceRd

Mary

St

Adco

ckCl

Athert

on-He

rberto

n Rd

Broa

dway

72SP250045

762SP252379

2MPH24775

4047SP137929

4SP217232

6CWL3589

5MPH40308

14CP860924

9CP860924

166RP902755

167RP902755

7CP860924

21CP860925

3RP880957

15RP851417

1MPH24775

4048SP137929

4RP749612

10SP237039

4RP89543238MPH40823

50CWL835581

2AP21279

36MPH33673

183SP208318

6CP860924

4CP860925

1MPH31633

761SP252379

2RP8671213RP867121

11SP174189

9SP237039

1CWL3662

2MPH2313

4046CP862881

21CWL808403

103CWL3663 2MPH2383

2RP880957

11CP860924

51MPH40843

294CWL3523

10CP860924

2CP835446

1RP867121ASP137285BSP137285

3CWL3662

6RP851424

1MPH2626

4MPH32702

8MPH40334

197AP1009

AMPH40843

20CP860925 17CP860925

94CP865093

248CP895988

BSP298402

8RP836149

4RP884808

5RP884808

9SP206969

7RP851424

9RP851424

12CP860924

16CP860924

10CP835446

150USL39283

9RP8361496RP912863

131H25324

6MPH40308

6CWL3539

10SP174189

44MPH40823

13CP860924

5RP895432

15CP860924

3SP195716

1CP860925

51USL39301

22CP881025

14RP851417

ARP851417

4CWL3662

1CWL3663

8SP206969

8MPH35605

7CWL3606

1MPH2313

8RP851424

1MPH2383

1MPH2416

3MPH32702

47MPH4084348MPH40843

5CWL835413

13MPH40334

37MPH40823

52CWL835581

43MPH40823

296CWL3582

182SP208318

181SP208318 2AP4547

8CP86092422CP860924

71SP250045

7RP912863

2CWL3662

1MPH40308

1MPH401852MPH33387

5MPH32702

45MPH4082346MPH40843

49MPH40843

39MPH40823

2MPH30644

5CP860924

2SP195716



0 75




:


Morris Rd

Todd

St

John St

Ellie St

Florence St

River Tce

Per kins St

2MPH34194

1MPH24690

21H25325

4RP700383

ASP227808

61H25320

21H2536

3RP700377

14H2536

3RP7004002RP700400

1SP200263

12H2536

408H2531

CSP120065

ARP736790

14MPH32732

8H25332

73H25320

2RP700382

1RP700399

2MPH2461

5CWL3313

409H2531

15H2536

89SP113988

DSP179216

17H2536

13H2536

1RP735215

ASP179216

1MPH34194

411H2531

23H25325

32H25325

1MPH2485

2RP7003951RP702088

6H25332

7H25332

1RP700409

11SP273698

1RP700401

2RP700381

2RP700378

1RP700386

2RP700398

11H2536

24H25325

304CWL3609

11SP220752

3RP700382

2RP700384

1RP700402

1RP700400

1RP700398

3RP700402

2RP700402

16H2536

92SP113989

93SP113989

24H2536

2RP700404

1RP700380

1RP700405

3RP700399

277CP898468

71H25320

412H2531

410H2531

22H25325

2RP845206

2RP700380413H2531

2RP700391

72H25320

7RP745690

5RP700402

3RP700378 4RP749311

1RP700404

2RP700399

33SP190315

3RP845206

63USL39287

3RP7003811RP700385

1RP700384

23H2536

3RP749311

27H25326

12SP220752

3RP7003832RP700385

2RP700386

1MPH2461

1RP7004032RP700403

3RP7004012RP700401

88SP113988



0 50




:


Morris Rd

Todd

St

Florence St

Rose St

Emma

St

2MPH34194

1MPH24690

3RP700400

CSP120065

ARP736790

14MPH32732

73H25320

255CWL3295

10SP292867

304CWL3609

89SP113988

DSP179216

91SP113989

ASP179216

1MPH34194

254CWL3271

1MPH2485

1RP700409

1SP292867

92SP113989

1RP700405

3RP700399

277CP898468

71H25320

2RP845206

72H25320

2RP700410

1MPH31436

1MPH2452

63USL39287



0 50




:


James Rd

Broadley Rd

Dei Rossi Rd

Rolley Rd

Long

lands

Gap-H

erbe

rton R

d

104SP113990

1SP202300

1MPH24710

3224CWL839136

2RP700365

211RP860904

208H25327

351SP177994

1MPH24542MPH24788

103SP113991

2MPH2643

210RP860904

2RP700369

2RP700370

215SP179203

1RP700370

275SP106052

102SP113991

207H25327

1RP700369

503H25327

6H25328

1MPH2457

3MPH24788

3RP7003651MPH2643

105SP113990

1MPH247181RP818026

1MPH24788

2RP818026

2RP700366

212H25327

303H25327

7H25347

206AP23116

1MPH30075

4179CP862888

1MPH24752

2RP700367

1RP700367211H25327

1MPH24581H25328

2MPH33500

2SP202300

1MPH33500

3RP818026

206H25327

1RP700365

1RP700366



0 100




:


!

Harding Rd

James Rd

Rolley Rd

J.A.

Daws

onRd

Gollogly Rd

Bajem

a Rd

Tepo

n Rd

Reynolds Rd

Tepon Road Ac cessRd

Long

la nd s

Gap-H

erbe

r ton R

d

3MPH2542

2MPH2486

1SP2023002RP706565

1MPH24710

1MPH308761MPH2571

211RP860904

1RL6410

2SP111956

1AP3435

306H25327

208H25327 215H25327

3MPH2456

2MPH2542

1MPH2486

1MPH2456

4SP111956

1RP706565

103SP113991

1MPH24691

2MPH24691

3MPH24800

2MPH24753

1MPH14281

504H25327

210RP860904

2RP700369

2RP700370214H253271RP700370

275SP106052

2AP3435

601H25327

102SP113991

4MPH14281

1MPH24800

2MPH2331

13MPH14281

5MPH14281

207H25327

1RP700369

213H25327

503H25327

305H25327

2MPH24752

110SP113992

111SP113992

1MPH2642

4CP866935

1MPH2303

2MPH14281

67USL39300

1MPH24795

1MPH2331

212H25327

2MPH2456

303H25327

7H25347206AP23116

4179CP862888

2MPH24795

402H25327

1MPH24752

211H25327

3MPH2486

225N25373

304H253272SP202300

3RP818026

206H25327

1MPH2542

ASP250037

Wondecla



0 100




:


Gollogly Rd

Cleg

horn

Rd

Rolley Rd

Reynolds Rd

1RP723404

2RP706565

704H25327

1MPH24613

2MPH24878

2SP111956

1AP3435

604H25327

306H25327

1MPH2304

215H25327

505H25327

13CAR12432

ASP107799

144USL39299

4SP111956

403H253271RP706565

702H25327

1MPH24878

1MPH24691

504H25327

214H25327

AAP17361

AAP12201

2AP3435

601H25327

213H25327

6CAR12432

305H25327

276H25327

405H25327

1MPH2303

7CAR12432

404H25327

701H25327

1MPH2629

303H25327

7H25347

605H25327

603H25327602H25327

406H25327

402H25327

AAP2143

304H25327

608H25327

8CAR12432

12CAR12432

ASP250037



0 100




:


Harding Rd

Adams Rd

Cassell Rd

Bajema

Rd

121SP113993

3MPH2542

30AP20151

1MPH34890

1MPH14281

7MPH14281

9MPH14281

1SP2570224MPH14281

2MPH233113MPH14281

5MPH14281

1MPH25024

1MPH2593

14CWL836167

1AP12209

111SP113992

5SP219782

2MPH14281

3MPH14281

2MPH40072

1MPH2641

2MPH25024

67USL39300

AMPH34484

1MPH24803

1MPH9375

1MPH2603

2SP257022

41SP265018

183OL443

1MPH40072



0 100




:


Moomin SidingRd

Moomin Rd Deba

ndga

ryRd

1AP19246

217CWL342

179NPW922

63SP113985

290CWL35171SP265020

2SP265020

160CWL366

211CWL358

1RP733446

2RP733446

Wild River Dam Evacuation AdviceSunny Day Cascade Failure Flood Extent - Map 5


0 100




:


Moomin Rd


217CWL342

10M2973

202M2971

63SP113985

9M2973

197AP1009

72SP113986

290CWL3517

201M2971

12M2973

102M2971101M2971

103M2971

1AP19246

203M2971

11M2973

211CWL358



0 60




:

Evacuate away from flood extent upon notification.Evacuate to clearing at intersection of Moomin Rd and

Atherton-Herberton Rd.


194FTY1870

252CWL3185

290CWL3517

197AP1009

201M2971

43H25337

1AP19246

174CWL3185

72SP113986

211CWL358

1MPH24923



0 100




:


Rose

L

Morris Rd

Todd

St

Rose

St

Emma

St

Florence St

2MPH34194

1MPH24690

2RP738091

28H25326

ASP227808

61H25320

3RP7004002RP700400

CSP120065

ARP736790

14MPH3273273H25320

255CWL3295

10SP292867

1MPH2653

304CWL3609

1RP700399

89SP113988

DSP179216

91SP113989

ASP179216

1MPH34194

254CWL3271

1MPH2485

1RP700409

BSP227808

2RP700398

1RP738091

1SP292867

1RP700402

1RP700400

1RP700398

3RP700402

2RP700402

92SP11398993SP113989

2RP700404

1RP700405

3RP700399

277CP898468

71H25320

20RP838246

2RP845206

72H25320

21RP838246

2RP700410

1MPH31436

5RP7004021RP700404

2RP700399

2RP700406

1MPH2452

3RP845206

63USL39287

27H25326

22H25326

1MPH24714

1MPH2461

1RP7004032RP700403

3RP7004012RP700401



0 60




:


James Rd

Rolley Rd

Longlands Gap-Herberton Rd

104SP113990

1SP202300

1MPH24710

3224CWL839136

2RP700365

211RP860904

208H25327

1MPH2454

1MPH2486

2MPH24788

103SP113991

2MPH2643

210RP860904

2RP700369

2RP700370

1RP700370

275SP106052

102SP113991

207H25327

1RP700369

6H25328

1MPH2457

3RP7003651MPH2643

105SP113990

1MPH247181RP818026

1MPH24788

2RP818026

2RP700366

212H25327

7H25347206AP23116

1MPH30075

4179CP862888

1MPH24752

2RP700367

1RP700367

211H25327

1MPH2458

3MPH2486

2MPH33500

2SP202300

1MPH33500

3RP818026

206H25327

1RP700365

1RP700366



0 75




:

Evacuate away from flood extent upon notification.Evacuate along James Rd and Longlands Gap-Herberton Rd

to assemble at the end of No Name Rd.


Wild River Dam

Version 7: 31/07/2019

APPENDIX E

WILD RIVER DAM STORAGE CURVE & STORAGE SPILLWAY DISCHARGE CURVE


Wild River Dam

Version 7: 31/07/2019

wild river damdata.dnrm.qld.gov.au/eap/wild-river-eap.pdf · 2019-12-04 · safety report...

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