Water Cycle Study - East Devon District Council

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Ref EWCS April 2010 Exeter and East Devon Water Cycle Study 5.5.5 The majority of surface water bodies in the catchment are currently classified as either good or moderate ecological status. Figure 5.4 shows the proportion of assessed river water bodies in each status class, by element. The main contributors to less than good status are identified as being phosphate, diatoms and fish. Figure 5.4 – Proportion of assessed river water bodies in each status class, by element (numbers above bars indicate total number of water bodies assessed for each element) Surface Water Bodies - Ecological status 5.5.6 It can be seen from the RBMP classification table (Table 5.1) that the majority of the East Devon catchment within and surrounding the study area is not currently compliant with good ecological status. By 2015, 35 per cent of surface waters in this catchment will improve for at least one element of good status and seventeen river water bodies will improve to good ecological status. The main reasons for less than good status are; impacted fish communities, high levels of phosphate, impacted diatom communities and physical modification. Surface Water Bodies – Chemical Status 5.5.7 Seven waterbodies have been assessed in the East Devon catchment for Chemical Status. All of these meet good chemical status. 48
Exeter and East Devon Water Cycle Study Groundwater Bodies 5.5.8 For groundwater bodies, currently 84 per cent are at good quantitative status in the South West River Basin. 64 per cent are at good chemical status. The three main ground water bodies that underlie the core study area (Otter Valley/Central Devon & Exe/Permian Aquifers Central Devon) all achieve a poor chemical status. Figure 5.5 shows the predicted quantitative status for groundwater in 2015, and Figure 5.6 shows the predicted chemical status for groundwater in 2015. Figure 5.5 – Predicted quantitative status for groundwater in 2015 © Environment Agency copyright and / or database right 2009. All rights reserved. This map includes data supplied under licence from: © Crown Copyright and database right 2009. All rights reserved. Ordnance Survey licence number 100026380 and BGS © NERC 2009. 49 Ref EWCS April 2010
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Water Cycle Study - East Devon District Council

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