S0210 G S0138 S0148 S0143 S0174 S0097 S0107 S0184 I L S0391 D S0382 S0428 North A

B

S0222 R S0137

O O S0112 S0178 K S0393 S0101 S0427 S0202 S0414 S0102 S0426 L L S0375 S0109 E W R I S0140 Y E R G 398000 S0119 B L A NA S0111 CA HIP S0182 R S STE HE NC S0139 S0013 MA S0179 C

M ED L OC S0128 K T U N S0415 S0127 N S0012 E L S S0113 S0124 S0014 S0117

S0116 D S0122 S0017 S0120

S0118 M ED K S0016 M0042 L OC S0115 T0463 S0133 S0125

S0135 S0126 S0136

T0463 S0130 S0005 T0333 S0129 S0392 T0332 397000 S0114 S0123 Council Boundary Ashton, Bridgewater and T0467 Rochdale S0132 T0322 Canal Overtop Hazard Zone / Grey Irwell T0471 Canal Overtop Hazard Zone S0121 Other Waterbodies S0131 Canal Breach Hazard Zone T0154 S0134 T0365 Main Rivers (V8.0) S0381 T0472 T0155 T0167 Canal Breach Zone A T0469 T0145 Culverted T0158 T0435 T0164 Canal Breach Zone B T0164 Open T0143 T0165 SFRA Canal Hazard Zone T0159 T0462 Digitised River Lines T0149 T0147 Potential Development Sites / Locations Culverted T0321 Employment Open T0468 T0229 T0233 T0232 Housing

C T0153 O T0162 R Mixed Use N B R T0234 O O K Other T0235 T0152 T0329 T0142 396000 T0440 T0320 Regional Centre Boundary T0228 T0227 T0352 T0146 This map has been produced in accordance with PPS25: Development and Flood Risk.

T0151 T0160 Two indicative "Canal Hazard Zones" have been created for the Bridgewater, Ashton and Rochdale T0460 T0445 Canals. These have been generated using broadscale 2D modelling to show areas that could potentially be affected by flooding in the event of LONGF T0349 T0455 T0438 •Canal Overtop Hazard Zone ORD BR OOK T0163 •Canal Breach Hazard Zone. T0359 T0323 T0470 T0170 The potential breach locations / areas were sub-divided into two Canal Breach Zones: •Canal Breach Zone A. A walkover survey of the canal was undertaken to identify the embankments T0226 T0408 more likely to breach, based on their height and width. This zone shows those areas that would be T0161 affected by a breach of one of these embankments. In this zone a detailed examination of canal T0358 breach flood risks is required in a site specific FRA. •Canal Breach Zone B. Less likely breach locations, such as at wide, low or very low embankments, were identified by a walkover survey of the canal. At such locations it is more likely that this source of risk could be scoped out within any site specific FRA. T0169 T0225 T0328 It should be noted that these outlines are based on broadscale modelling techniques and T0144 T0157 should only be taken as an indication of areas that might be at risk and inform Flood Risk Assessments. There are a number of uncertainties associated with the simulation of flooding from T0148 canals in either overtopping or breach conditions. The assumptions behind the modelling should be considered when using and reviewing the hazard zones that have been produced. Full details of the methodology used to derive Canal Hazard Zones is provided in Chapter 3 of the Level 2 SFRA and T0299 T0350 T0357 T0351 guidance on the use of the Canal Hazard Zones is provided in Chapter 3 of the SFRA User Guide. T0356 T0404 T0454 T0325 T0298 T0297 T0150 T0325 The Canal Hazard Zone resulting in a breach from the in Oldham has also been T0456 included on the map and has been taken from the Oldham SFRA (2010). This was based on a similar broadscale methodology. 395000 T0324 Interactions between the Bridgewater Canal and the in may result in overtopping of the Canal during severe weather events, as shown elsewhere in the SFRA.

For further information please see the Level 2 SFRA Chapter 3. T0174 T0348 The Main River information shown in the SFRA is provided by the Environment Agency; the centreline data may deviate from that shown on basemapping due to inherent differences in data resolution. T0307 Further information on Main Rivers is provided on the Environment Agency’s website. The mapping of culverted sections of watercourse is a strategic screening only based upon Ordnance Survey 1:10,000 mapping and should be confirmed for more detailed studies such as site specific Flood Risk Assessment. The canals layer does not necessarily cover all the canal arms, but the modelled T0224 overtopping/breaching and hydraulic interactions with rivers and other waterbodies is complete and T0175 accurate as appropriate for a Strategic Flood Risk Assessment. T0330

T0432 T0310 The between Victoria Station and Pomona Island is not shown as a Main River on the T0452 T0392 Environment Agency's Flood Map although Flood Zones related to the river are. The same approach T0331 T0309 has been taken in this SFRA. T0182 T0457 T0433 T0473 The map should be considered when applying the Sequential Test and used to scope the inclusion of T0308 T0156 T0396 canal flood risk within a site specific FRA. OK T0326 A BR O T0443 D EE T0166 OL T0354 www.jeremybenn.co.uk

T0361 t 01925 570876 f 0845 8627772 e [email protected] T0360

T0355 Bank Quay House Sankey Street 394000 T0327 M0038 WA1 1NN T0353 United Kingdom Other offices at Atherstone, Doncaster, Edinburgh, Haywards Heath, Limerick, T0464 Newcastle upon Tyne, Newport, Northallerton, Saltaire, Skipton, Tadcaster & T0223 Wallingford for

LOW VERF MERSEY O Manchester City, Salford City and Trafford

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S R Councils Level 2 Hybrid SFRA M E

Canal Hazard Zones

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M Drawn by: J Cheetham Date: 15/03/2011 This map is based upon Ordnance Survey material with the permission of Ordnance Survey on behalf of the Controller CH Checked by: Date: of Her Majesty's Stationery Office © Crown copyright. ORLTON J Dimelow 01/02/2011 B PLATT GOR E Unauthorised reproduction infringes Crown copyright and A R may lead to prosecution or civil proceedings. Licence R O Approved by: Date: number: 100019568 2011. W J Cooper 01/02/2011 B R O O File Name: K ...ArcView\Mapping\Level2\MST_Canal_Hazard_V1.3.mxd T0128 Drawing Number: Status: Scale: 0 0.5 1 393000 Kilometre

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0 MF 0 0 0 0 0 0 O OR 0 T R D 0 0 0 0 0 0 7 S B 8 9 0 1 2 3 7 RO 7 7 8 8 8 8 3 O 3 3 3 3 3 3 Original @ A1 K