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Energy from Waste (EfW) Facility, Protos Plot 8 Flood Risk Assessment 660941-03-03 Rev01
APPENDIX D PREVIOUS ENVIRONMENT
AGENCY DATA
Energy from Waste (EfW) Facility, Protos Plot 8 Flood Risk Assessment 660941-03-03 Rev01
APPENDIX E CURRENT ENVIRONMENT
AGENCY DATA
_̂
Tang Running
West Central Drain 1
Western Boundary Drain
East Central Drain 1
East Central Drain 2
Defences Map centred on Ince Marshes, Elton GMMC14816KE created 16/06/2016
Contact Us: National Customer Contact Centre, PO Box 544, Rotherham, S60 1BY. Tel: 08708 506 506 (Mon-Fri 8-6). Email: [email protected]© Environment Agency copyright and / or database rights 2016. All rights reserved. © Crown Copyright and database right. All rights reserved. Environment Agency, 100026380, 2016.
Legend_̂ Site Location
Main RiverAreas Benefiting from Defences
DefencesASSET_ID
3418934290172827174262184580
¯1:10,000
16th June 2016 Ince Marshes, Elton GMMC14816KE
Map Reference Model Node Reference Easting Northing Data1 % AEP (1 in 100
year)
1 % AEP (1 in 100
year) + Climate
Change*
0.5 % AEP (1 in
200 year)
0.1 % AEP (1 in
1000 year)
1 % AEP (1 in 100
year)
1 % AEP (1 in 100
year) + Climate
Change*
0.5 % AEP (1 in 200
year)
0.1 % AEP (1 in
1000 year)
1 % AEP (1 in
100 year)
1 % AEP (1 in
100 year) +
Climate Change*
0.5 % AEP (1 in
200 year)
0.1 % AEP (1 in
1000 year)
1 % AEP (1 in 100
year)
1 % AEP (1 in
100 year) +
Climate Change*
0.5 % AEP (1 in
200 year)
0.1 % AEP (1 in
1000 year)
1 % AEP (1 in
100 year)
1 % AEP (1 in 100
year) + Climate
Change*
0.5 % AEP (1 in
200 year)
0.1 % AEP (1 in
1000 year)
Modelled Water Level (m aodN) 4.50 4.85 4.64 6.86 4.50 4.84 4.64 6.86
Modelled Flow (cumecs) 146.24 138.14 133.29 349.06 135.64 153.73 125.45 349.92
Modelled Water Level (m aodN) 4.64 4.85 4.64 6.86 4.64 4.84 4.64 6.86
Modelled Flow (cumecs) 148.29 140.52 135.34 337.08 138.07 155.65 127.23 337.83
Modelled Water Level (m aodN) 4.56 4.85 4.64 6.85 4.56 4.84 4.63 6.85
Modelled Flow (cumecs) 149.11 141.98 139.28 325.26 140.42 156.27 130.1 325.94
Modelled Water Level (m aodN) 4.62 4.85 4.63 6.85 4.62 4.84 4.63 6.85
Modelled Flow (cumecs) 156.43 147.68 143.06 315.47 148.9 162.67 135.39 315.98
Modelled Water Level (m aodN) 3.53 3.67 3.57 3.66 7.06 8.08 7.36 7.36 5.91 6.27 5.91 7.42
Modelled Flow (cumecs) 0.28 0.35 0.31 0.35
Modelled Water Level (m aodN) 3.47 3.59 3.52 3.60 7.17 8.05 7.34 7.34 5.85 6.26 5.85 7.40
Modelled Flow (cumecs) 0.3 0.36 0.36 0.57
Modelled Water Level (m aodN) 3.54 3.68 3.58 3.67 7.18 8.06 7.35 7.35 5.88 6.27 5.88 7.41
Modelled Flow (cumecs) 0.62 0.66 0.65 0.77
Modelled Water Level (m aodN) 3.56 3.71 3.60 3.69 7.16 8.03 7.33 7.33 5.82 6.26 5.82 7.38
Modelled Flow (cumecs) 0.6 0.64 0.63 0.76
Model data taken from Manchester Ship Canal 2010 Study, Ince and Frodsham Fluvial 2011 Study and Ince and Frodsham Tidal 2011 Study
Notes:
AEP - Annual Exceedence Probability
m aodN - metres above ordnance datum Newlyn
cumecs - cubic metres per second
Defences
Asset Type Asset ID Overall Condition Grade Upstream Actual Crest Level
high_ground 184580 3
high_ground 34290 3
high_ground 34189 3
high_ground 172827 3
high_ground 174262 3
3.31
4.93
6.24
4.93
4.21
Downstream Actual Crest Level
346532
377672
377514
377434
377352
Standard of Protection
*Climate Change Scenario based on the previous guidance - 20% increase in flow. The new climate change guidance is available at
https://www.gov.uk/guidance/flood-risk-assessments-climate-change-allowances
The location of the site and the type (vulnerablility) of development determine the climate change allowances to consider in any flood risk
assessment.
345807
Representative of present conditions (i.e. all gates are operational as per
the agreed automated protocol). This scenario is used for our flood risk
mapping. (4 gates open)
Representative of a single gate failure on every set of sluice structures.
This will define the residual risk. (3 gates open)Ince and Frodsham Fluvial 2011 Defended Ince and Frodsham Tidal 2011 Ince and Frodsham Fluvial 2011 Undefended
ea013_Model_MSCC02_362
ea013_Model_MSCC02_364
ea013_Model_MSCC02_366
ea013_Model_MSCC02_368
2
377362
347272
346683
346076
3454864
346460
100
100
100
5
376792
377312
377154
346325ea013_Model_WESB01_00004
ea013_Model_WESB01_00005
ea013_Model_WCDR01_00008
ea013_Model_WCDR01_00010
7
8
1
6
3.53
3.31
7.04
6.24
3.04
100
100
3
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2
3
57
8
6
1
Tang Running
West Central Drain 1
Western Boundary Drain
East Central Drain 1
Detailed Flood Map centred on Ince Marshes, Elton GMMC14816KE created 16/06/2016
Contact Us: National Customer Contact Centre, PO Box 544, Rotherham, S60 1BY. Tel: 08708 506 506 (Mon-Fri 8-6). Email: [email protected]© Environment Agency copyright and / or database rights 2016. All rights reserved. © Crown Copyright and database right. All rights reserved. Environment Agency, 100026380, 2016.
Legend_̂ Site Location
") Model MeasurementsMain RiverFlood Zone 3Flood Zone 2Areas Benefiting from Defences
¯1:10,000