Water Cycle Study - East Devon District Council

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Appendix A – Study Data Ref EWCS April 2010 10 Exeter and East Devon Water Cycle Study Ref. No Subject & Type of data Source Date received WBEWCS001 Data licence for OS maps – Word Document Adrian Marsden – EDDC 11/03/2009 WBEWCS002 DVD containing 10k and 50k maps Adrian Marsden – EDDC 19/03/2009 WBEWCS003 EDDC Local Plan GIS information Adrian Marsden – EDDC 19/03/2009 WBEWCS004 EDDC GIS boundary Adrian Marsden – EDDC 19/03/2009 WBEWCS005 ECC Local Plan GIS information Ian Dawson – ECC 23/06/2009 WBEWCS006 ECC GIS boundary Ian Dawson – ECC 23/06/2009 WBEWCS007 Exeter and East Devon New Growth Point GIS boundary John Maidment – EDDC 23/06/2009 WBEWCS008 East Devon Strategic Growth Areas GIS boundaries John Maidment – EDDC 18/06/2009 WBEWCS009 Data Licence for EA data, Ref: 8983 EA External Relations Team 30/06/2009 WBEWCS010 Fluvial flood zone maps GIS – East Devon, Exeter & South Devon EA External Relations Team 30/06/2009 WBEWCS011 RQO/GQO data up to 2006 – Excel document EA External Relations Team 30/06/2009 WBEWCS012 South west SIMCAT data file (using dry weather flows) EA External Relations Team 30/06/2009 WBEWCS013 STW Consent conditions – Excel document EA External Relations Team 30/06/2009 WBEWCS014 Sample sites – ArcMap GIS EA External Relations Team 30/06/2009 WBEWCS015 Latest Exe and East Devon CFMPs – electronic documents EA External Relations Team 30/06/2009 WBEWCS016 Latest CAMS status – ArcMap GIS EA External Relations Team 30/06/2009 WBEWCS017 CAMS documents and technical CDs EA External Relations Team 30/06/2009 WBEWCS018 Water Framework Directive classification maps – ArcMap GIS EA External Relations Team 30/06/2009 WBEWCS019 ArcMap GIS data previously used for East Devon SFRA: Hydrometric areas Flood incident data Flood Warning and Watch Areas Major Incident Plan Areas River catchment boundaries Main river and ordinary watercourses Flood mapping and Flood defence data EA External Relations Team 24/04/2008
Exeter and East Devon Water Cycle Study Appendix B – Geology characteristics Geology Geological and Hydrogeological Properties1 Aquifer Class (Infiltration Drainage Potential)2 Age Group/ Unit Formation Quaternary (Pleistocene and Recent) Upper Cretaceous Lower Cretaceous Chalk Super group Greensand Group Peat Silt and fibrous plant material. Highly porous but poorly permeable Alluvium Silt and clay, often overlying or containing lenses of sand and gravel. Variably porous and permeable (generally poor, although River Terrace Gravels Plateau Gravels and Clay-with- Flints sands and gravels may be significant locally) Coarse sands and gravels in river valleys. Typically present above current river levels at multiple elevations. Generally moderately to highly porous and permeable Coarse sands and gravels chiefly of flint and/or chert, set in clay in the case of Claywith-Flints. Poorly to moderately porous and permeable Head deposits Heterogeneous mix of clay, silt, sand and gravel of periglacial origin. May be layered depending on local provenance. Poorly to moderately porous and permeable Extremely pure white limestones with random and bedded flint. Generally highly porous (primary and secondary) and permeable Silty, fine-grained, glauconitic and variably shelly sand and sandstone. Moderately permeable, highly porous. Non - Aquifer (Poor) Non - Aquifer (Poor) Minor aquifer (Moderate) Non - Aquifer (Poor) Non - Aquifer (Poor) Major (Good) Major (Good) 10 Ref EWCS April 2010 Distribution within Study Area 3 Restricted to river valleys and generally only of local occurrence Widespread in river valleys, particularly in the Exe and Axe Relatively minor restricted to Exe valley On high plateaux of East Devon between Rivers Otter and Lim At toe of valley slopes in all areas of study area Caps high ground between Rivers Axe and Lim and as outlier at Beer Forms high ground between Rivers Axe and Lim Groundwater Flooding Potential4 Unlikely Possible - though likely related to fluvial/tidal events Possible – though likely related to fluvial/tidal events WCS Sites affected D2, E12, EXM, OSM, COLY, D2, D3, E0, E1, E2, E3, E4, E5, E6, E7, E8, E11, E12, ECS, EXM, BUD, NEWT, OSM, AXM, Unlikely COLY, BEER Unlikely D3, E1, E2, E3, E4, E5, E6, E7, E8, E9, E11, E12, NEWT, OSM, SID, HON Unlikely AXM, BEER Possible but localised SEAT, COLY
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Water Cycle Study - East Devon District Council

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