4 March 20094 March 2009 4 March 20094 March 2009

Presentation to

Shannon Protection Alliance,

Dromineer, Co Tipperary

www.watersupplyproject-dublinregion.iewww.watersupplyproject-dublinregion.iewww.watersupplyproject-dublinregion.iewww.watersupplyproject-dublinregion.ie

Presentation Content

• Background / Current Status

• Need / Extent / Timing – New Water Supply

• Water Supply Options

• Principal Stakeholder Issues

• Option Evaluation Methodology / Evaluation Summary

• Overall Summary

Background / Current Status

1996 Strategic Study (DEHLG)

2000 Review of Strategic Study (3 Options)

2004/5 Feasibility Study

2006 Public Consultation (3 No) – (SEA Phase 1)

2007/8 Expanded Range of Options (10 No) – Assess

2008/9 Public Consultation SEA Phase2 – Nov 08 - Feb 09

2009 Shortlist / Preliminary Reports / Preferred Option

2009+ EIA / Public Consultation / An Bord Pleanala

Need for New Water Supply

Water Demand Growth

• Population - 1.5m (2008) 2.2m (2031)• Leakage - 43% (1997) 30% (2008) 20% (2031) - Network Rehabilitation (€ 120m – 2007 / 2012)• Water Conservation

- By-Laws / Awareness - Metering (non-domestic)

• Economic Growth - Cyclical / Increase over Long Term

Dublin Region (Water Supply Area)

1996 2006 2016 2031

Population (000’s) 1180 1370 1685 2180

Average Total Demand (Ml/d)

460 530 630 800

Sustainable Production of Dublin Region Sources (Ml/d)

470 540 630 630

1Ml/d = 1 million litres or 1,000 cubic metres (m3)per day

Extent of Water Supply Requirement2016 / 2031

Average 170Ml/d

Peak 80Ml/d

Midlands 50 Ml/d

Contingency 50 Ml/d

Total 350Ml/d

Abstraction – Flow Rates

• 170 Ml/d (average Dublin requirement - 2031) ≈ 2m3/sec

• 350 Ml/d (Peak + Midlands + Contingency - 2031) ≈ 4m3/sec

• Average Shannon Flow Lough Ree ≈ 100 m3/sec

• Average Shannon Flow Lough Derg ≈ 180 m3/sec

• Peak Shannon Flow ≈ 800 m3/sec

(Liffey Average Flow Leixlip ≈ 15 m3/sec)

450

500

550

600

650

700

750

800

850

2003 2005 2007 2009 2011 2013 2015 2017 2019 2021 2023 2025 2027 2029 2031 2033

Year

Ml/d

Planned Sustainable Production

New Source Required

Average Demand Projections

Kildare (Barrow)

Timing of New Water SupplyRequirement

Low

Low

20% 16%

SCENARIO

Water Conservation Pro-Active

Economic Growth Rate Medium / High

Population Growth Rate Medium / High

Leakage at 2031

Low

Low

Pro-Active

Demand Supply Balance2007 - 2031

17

70

170

280

3

3

75

215

170

32017

Average Dublin Region Demand 2007 – 540 Ml/day

Average Dublin Region Demand 2031 – 800 Ml/day

River Liffey

BallymoreEustaceLeixlip

Roundwood

Ballyboden

Bog of the Ring

New Source

BallymoreEustaceLeixlip

Roundwood

Ballyboden

Bog of the Ring

New Source

Dublin Region Existing Sources

River Liffey will always provide majority of water for Dublin Region

Water Supply Options

Shannon

A. Lough Ree

B. Lough Derg

C. Parteen Basin / Weir

D. Lough Ree - Lough Derg Combination

E. Lough Ree + Storage

F. Lough Derg + Storage

G. Impoundment

Other

H. DesalinationI. GroundwaterJ. Liffey/Barrow

General Comment• Options – not all of equal merit• Capacity Problems• Options – Storage (former bogs) – Environmental (favoured)• Cost

A-Lough Ree

B-Lough Derg

C-Parteen Basin

D-Lough Ree +Lough Derg

E- Lough Ree + Storage

F- Lough Derg + Storage Options

G-Impoundment- Lough Ree [Derg]

H-Desalination

I-Fingal / Kildare Groundwater

J-Liffey / Barrow

LoughRee

LoughDerg

RiverShannon

ATHLONE

MULLINGAR Desalination Plant

Wells

Killaloe

A

B

C

H

G

I

JPORTLAOISESLIEVE BLOOM

MOUNTAINS

TULLAMORE

TerminationPoint

E

F

Parteen Basin

Ballycoolen

Former Bogs

Ballymore Eustace

Athy

RiverBarrow

Impoundment

Poulaphuca Lake

ESB ArdnacrushaRiver Shannon

Head Race

F2

F1D

E

G

LOUGH REE A-Lough Ree D-Lough Ree +Lough Derg

E- Lough Ree + Storage

G-Impoundment- Lough Ree [Derg]

LoughRee

LoughDerg

RiverShannon

ATHLONE

MULLINGAR

A

G

PORTLAOISE

TULLAMORE

TerminationPointFormer Bogs

Impoundment

D

E

Lough Ree (A, D, E, G)

• Sluice Operations – Water Levels / Downstream Flows (min 12m3/sec)

• Current Operation (ESB / WI Regs) – Balance Navigation / Flooding

• Hydrological Modelling of Shannon & Abstraction Impacts

• Abstraction – Modify Sluice Operations / Increase Seasonal Flood Risk

• Abstraction – Increase Min Flow Durations (Dry Periods)

• Flood Risk Increase / Increased Duration Min Flows

– Environmental Issues Lough Ree / Callows

LOUGH DERG

PARTEEN BASINB-Lough Derg C-Parteen Basin F- Lough Derg

+ Storage Options

LoughRee

LoughDerg

RiverShannon

ATHLONE

MULLINGAR

Killaloe

B

C

PORTLAOISESLIEVE BLOOM MOUNTAINS

TULLAMORE

TerminationPoint

F

Parteen Basin

Former Bogs

ESB ArdnacrushaRiver Shannon

Head Race

F2

F1

Lough Derg / Parteen Basin (B, C, F)

• Storage Reservoir – Ardnacrusha (ESB) • Water Levels – Normal Range 460mm / 18”• ESB Abstraction – 170 m3/sec avg – 400 m3/sec max ( zero min)• Shannon River 10m3/sec min • Abstraction Dublin – Reduces ESB Abstraction

eg 170 m3/sec – 4 m3/sec = 166m3/sec avg• Water Levels Not Impacted• Residence Time (L Derg in Dry Periods) – Offset by Storage

Lough Derg / Parteen Basin – Average Flows & Abstractions

Killaloe

Parteen Basin

Ardnacrusha

Parteen Weir

180m3/s (avg)

170m3/s (avg)10m3/s (min)

No Abstraction

Killaloe

Parteen Basin

Ardnacrusha

Parteen Weir

176m3/s (avg)

166m3/s (avg)10m3/s (min)

With Abstraction

4m3/s (max)

Limerick

Limerick

LoughDerg

LoughDerg

OTHER SOURCESH-Desalination I-Fingal / Kildare

GroundwaterJ-Liffey / Barrow

LoughRee

LoughDerg

RiverShannon

ATHLONE

MULLINGAR Desalination Plant

Wells

H

I

JPORTLAOISE

TULLAMORE

TerminationPoint

Ballycoolen

Ballymore Eustace

Athy

RiverBarrow

Impoundment

Poulaphuca Lake

Desalination

• Technically Feasible

• Technology Improving Continuously

• Increased Usage (Israel / Southern Med / Spain / Australia etc)

• High Energy Requirement & Carbon Footprint

• Environmental Issue – Brine Dispersion

• Expensive (40% more than most expensive Shannon option)

Other Sources Assessed

Groundwater Specialist Study – Eugene Daly & Associates

• Estimated 110Mld “Developable Resource”– 80km radius Dublin

• Technical / Planning / Legal / Economic Risk

Liffey & Barrow Conjunctive Use

• Operational Issues– Flood Risk / Inefficient

• Capacity 20Mld - 40Mld

Principal Issues (Consultations to date)

All Issues Addressed during Assessment of Options

– Technical & Environmental Reports

– Website / Questions & Answers

Socio – Economic - Navigation / Tourism - Angling / Fisheries - Agriculture / Local Economy - Water Local Use / Flooding Environmental - Flows / Levels / Residence

Times - Climate Change - Water Quality - SAC / SPA / NHA Water Conservation - Leakage / Metering

Option Evaluation Methodology

Principles • Water Supply Scheme must be Sustainable – Environmental / Economic / Socio-Economic (Balance)• Abstraction of Water can not be at the expense of any other

community

Methodology (assessment of options / sustainability criteria)Option Technical Environmental Economic Socio-

Economic

X + - ~ -

Y ++ + - +

Z - ++ - ~

++ Major Positive

+ Minor Positive

~ Neutral

- Minor Negative

-- Major Negative

Option Evaluation Summary (Draft)

Economic Socio Economic

Source Infrastructure SEA Habitats Dir (HDA)Capex / Opex / Cost of Water

Delivered

Navigation / Tourism Agriculture/Angling

Local Economy / Flooding etc

Option A - ++ - - - - ++ -

Option B + + ~ ~ + +

Option C ++ ~ + ~ - +

Option D - ~ - - - + -

Option E ~ ++ + - ~ ~

Option F ++ + ++ ~ ~ ++

Option G ~ - - - - - - - -

Option H - - - ~ - - -

Option I Option cannot provide required quantities of water

Option J Option cannot provide required quantities of water

Desalination

Groundwater

Liffey - Barrow Conjunctive Use

Lough Ree (Phase 1) / Lough Derg (Phase 2)

Lough Ree + Storage (Bog)

Lough Derg + Storage (Bog)

Lough Ree (Lough Derg) + Impoundment

Lough Ree

Lough Derg

Description

Parteen Basin

Technical Environmental

Options

Strategic Environmental Assessment & HDA(environmentally favoured)

Shannon

A. Lough Ree

B. Lough Derg

C. Parteen Basin / Weir

D. L Ree – L Derg Combination

E. Lough Ree + Storage

F. Lough Derg + Storage

G. Impoundment

Other

H. Desalination

I. Groundwater (Capacity Issues)J. Liffey/Barrow (Capacity Issues)

Strategic Environmental Assessment & HDA

Other Benefits

• Treated Water Supplies – Offaly / Westmeath

• Lough Owel

– Supplies to Royal Canal

• Focus on Water Quality (Strategic Supply Source)

• Midlands Environmental Parks

• Hydrological Model – Enhanced Shannon Management (ShIRBD)

Summary

• New Supply Required – Dublin Region – Approx 2016 +

• 10 Supply Options Evaluated – Tech / Env / Econ / Socio-Econ

• Public Consultation : 24 Nov 2008 – 27 Feb 2009

• Evaluation of Feedback / Shortlist – Sustainable Development

• Preliminary Report (s) – Shortlisted Options

• No Decision Made

• Recommendation to DCC / DEHLG – Autumn 2009

• Post 2009 – Formal Planning Process (An Bord Pleanala)

• Multiple future opportunities for formal and informal consultation

• Extensive feedback to date

Consultation to date

• Website www.watersupplyproject-dublinregion.ie – 1,950 Visits– 10,000 Page Views

• Stakeholder Presentations

• General communication – email, phonecall, post – 147 No.

Year No.

2005 20

2006 20

2007 24

2008 55

2009 20 (end Feb)

Total 139

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