Windrush Catchment Plan
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[Draft] Windrush Catchment Plan February 2021 edit – based on partnership discussions and workshops 2018-19 Please note: This is a working document – it is still being refined. Even after publication it will be periodically reviewed and updated by partners as funding allows and as the catchment partnership develops, especially the projects listing. Feedback welcome. 1 Windrush Catchment Plan Contents Map of the Windrush catchment ............................................................................................................ 4 1. Our Vision for the Windrush Catchment ............................................................................................ 5 2. Introduction ........................................................................................................................................ 5 2.1. The Partnership ............................................................................................................................ 5 2.1.1. Role of the partnership ......................................................................................................... 5 2.1.2. Aims....................................................................................................................................... 6 2.1.3. Objectives .............................................................................................................................. 6 2.2. Drivers behind the Catchment Plan ............................................................................................. 6 3. Catchment Characteristics .................................................................................................................. 6 3.1. General description ...................................................................................................................... 6 3.1.1. River Windrush and tributaries ............................................................................................. 7 3.1.2. River Leach ............................................................................................................................ 7 3.1.3. River Thames ......................................................................................................................... 7 3.2. Physical character ........................................................................................................................ 7 3.2.1. Groundwater ......................................................................................................................... 7 3.3. Water quality ............................................................................................................................... 9 3.3.1. Point source pollution ......................................................................................................... 10 3.3.2. Diffuse pollution .................................................................................................................. 11 3.4. Natural environment ................................................................................................................. 12 3.4.1. Fisheries .............................................................................................................................. 12 3.4.2. Invertebrates ....................................................................................................................... 13 3.4.3. Macrophytes ....................................................................................................................... 14 3.4.4. Birds .................................................................................................................................... 15 3.4.5. Mammals ............................................................................................................................ 16 3.4.6. Designated sites .................................................................................................................. 16 3.4.7. Floodplain connectivity ....................................................................................................... 17 3.4.8. Invasive Non-Native Species ............................................................................................... 17 3.5. Water resources ......................................................................................................................... 18 3.5.1. Impacts of mineral extraction ............................................................................................. 19 3.5.2. Flood risk management ...................................................................................................... 20 3.5.3. Low flows ............................................................................................................................ 20 3.6. Development pressures ............................................................................................................. 20 3.7. Navigation on the Thames ......................................................................................................... 21 2 Windrush Catchment Plan 4. How can the partnership improve the Windrush catchment? ......................................................... 22 4.1. Water quality ............................................................................................................................. 23 4.2. Natural environment ................................................................................................................. 24 4.3. Water resources ......................................................................................................................... 25 4.4. Development pressures ............................................................................................................. 26 4.5. Monitoring ................................................................................................................................. 26 4.6. Coordination .............................................................................................................................. 27 5. Data & Evidence ................................................................................................................................ 29 6. Catchment Action Plan ...................................................................................................................... 30 6.1. Project list .................................................................................................................................. 30 6.2. Activities delivered or underway ............................................................................................... 30 Appendix 1: Background to the Catchment Based Approach ............................................................... 32 Appendix 2: Further Information .......................................................................................................... 35 Separate Appendices: Appendix 3: Overview of Ecological Status under EU Water Framework Directive 1. Ecological Status map of waterbodies in the Windrush (2016-2019) 2. Reasons For Not Achieving Good Status (2016-2019) Appendix 4: Terms of Reference for the Windrush Catchment Partnership Appendix 5: Windrush projects list Appendix 6: Maps of Environment Agency monitoring sites [draft note: Provided for Phosphate monitoring, along with Source apportionment GIS SAGIS details. No other monitoring site info maps yet. Refer also to CaBA Data Package] 3 Windrush Catchment Plan Map of the Windrush catchment All maps reproduced © Crown copyright and database rights Ordnance Survey Licence Numbers: 100050351; APs ©Bluesky International and ©Infoterra Ltd. 2006 and ©Infoterra Ltd. 2010. © Environment Agency copyright and / or database rights 2014. All rights reserved; Contains public sector information licensed under the Open Government Licence v1.0. (covers NE); © European Union, 1995-2014 (Covers EU); 'Reproduced with the permission of the British Geological Survey ©NERC. All rights Reserved' (BGS); Contains information licensed under the Non-Commercial Government Licence v1.0. (Met Office); © Forestry Commission copyright and / or database rights 2014. All rights reserved. (Forestry Commission); Copyright holder: European Environment Agency (EEA). (CORINE) 4 Windrush Catchment Plan 1. Our Vision for the Windrush Catchment Our vision is that the Windrush catchment is clean and full of wildlife, managed sustainably and valued by all. This plan is about managing the Windrush catchment in order to achieve our vision. 2. Introduction This document has been compiled by the Windrush Catchment Partnership and is intended to provide an overview of the main challenges and opportunities for the production of clean water and healthy freshwater habitats in the Windrush catchment. It will act as a source of information as well as outlining the priorities and plans of the Windrush Catchment Partnership. It complements strategic documents such as the Thames River Basin Management Plan (see Appendix 2: Further Information) and highlights actions needed to improve the Windrush waterbodies under the EU Water Framework Directive (see Appendix 1: Background to the Catchment Based Approach). This plan is intended to be accessible to any organisations and individuals interested in the Windrush catchment and/or the Windrush Catchment Partnership. Technical language has been kept to a minimum and descriptions are brief to ensure the plan is of readable length. Appendix 2 provides further reading for those