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The Impact of Water Abstraction Reform: Public Water Supply Operations

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The Impact of Water Abstraction Reform: Public Water Supply Operations www.defra.gov.uk The Impact of Water Abstraction Reform: Public Water Supply Operations Final R eport WT0964/WT0995 Produced: May 2014 The Impact of Water Abstraction Reform: Public Water Supply Operations Final Report WT0964/WT0995 Produced: May 2014 A report of research carried out by HR Wallingford, on behalf of the Department for Environment, Farming and Rural Affairs Research contractor: HR Wallingford Publishing organisation Department for Environment, Food and Rural Affairs Flood Risk Management Division, Nobel House, 17 Smith Square London SW1P 3JR © Crown copyright (Defra); 2014 Copyright in the typographical arrangement and design rests with the Crown. This publication (excluding the logo) may be reproduced free of charge in any format or medium provided that it is reproduced accurately and not used in a misleading context. The material must be acknowledged as Crown copyright with the title and source of the publication specified. The views expressed in this document are not necessarily those of Defra. Its officers, servants or agents accept no liability whatsoever for any loss or damage arising from the interpretation or use of the information, or reliance on views contained herein. The Impact of Abstraction Reform Public water supply operations MAR5044-RT001-R02-00 May 2014 The Impact of Abstraction Reform Public water supply operations Document information Document permissions Unrestricted Project number MAR5044 Project name The Impact of Abstraction Reform Report title Public water supply operations Report number RT001 Release number R02-00 Report date May 2014 Client Risk Solutions Client representative Helen Wilkinson Project manager Darren Lumbroso Project director Steven Wade Document history Date Release Prepared Approved Authorised Notes 07 May 2014 02-00 DML SDW SDW Updated to change title only 22 Jun 2013 01-00 DML SDW SDW Water supply source locations have been redacted or anonymised in line with Defra guidance Document authorisation Prepared Approved Authorised © HR Wallingford Ltd This report has been prepared for HR Wallingford’s client and not for any other person. Only our client should rely upon the contents of this report and any methods or results which are contained within it and then only for the purposes for which the report was originally prepared. We accept no liability for any loss or damage suffered by any person who has relied on the contents of this report, other than our client. This report may contain material or information obtained from other people. We accept no liability for any loss or damage suffered by any person, including our client, as a result of any error or inaccuracy in third party material or information which is included within this report. To the extent that this report contains information or material which is the output of general research it should not be relied upon by any person, including our client, for a specific purpose. If you are not HR Wallingford’s client and you wish to use the information or material in this report for a specific purpose, you should contact us for advice. MAR5044-RT001-R02-00 The Impact of Abstraction Reform Public water supply operations Contents No table of contents entries found. 1. Introduction _________________________________________________________ 1 1.1. Understanding key terms .................................................................................................................. 1 1.1.1. Water Resources Management Plan (WRMP) terms .......................................................... 1 1.1.2. Water resources infrastructure and operational terms ........................................................ 3 2. The Stour __________________________________________________________ 4 2.1. Introduction ........................................................................................................................................ 4 2.2. Normal operations ............................................................................................................................. 6 2.3. Reconciling the demand for water from sources in the Stour ........................................................... 7 2.4. Drought operations .......................................................................................................................... 10 3. The Hampshire Avon ________________________________________________ 11 3.1. Introduction ...................................................................................................................................... 11 3.2. Normal operations ........................................................................................................................... 16 3.3. Water demand ................................................................................................................................. 16 3.4. Water supply ................................................................................................................................... 18 4. The Usk ___________________________________________________________ 19 4.1. Introduction ...................................................................................................................................... 19 4.2. Water availability challenges ........................................................................................................... 21 4.3. Licensing policies ............................................................................................................................ 21 4.4. Water abstractions .......................................................................................................................... 22 4.5. Water balance, current water sources and discharges ................................................................... 25 5. The Dee __________________________________________________________ 26 5.1. Introduction ...................................................................................................................................... 26 5.2. River Dee regulation system ........................................................................................................... 29 5.2.1. Background ........................................................................................................................ 29 5.2.2. Control points ..................................................................................................................... 29 5.2.3. Designated abstractors ...................................................................................................... 30 5.2.4. Operation of reservoirs ...................................................................................................... 34 5.2.5. Water transfers internal to the catchment .......................................................................... 35 5.2.6. Demand reduction measures ............................................................................................. 38 6. The Tees __________________________________________________________ 41 6.1. Introduction ...................................................................................................................................... 41 6.2. Public water supply resource .......................................................................................................... 42 6.3. Demand ........................................................................................................................................... 43 6.4. Supplies ........................................................................................................................................... 43 6.5. Operational behaviour ..................................................................................................................... 45 6.6. Transfers ......................................................................................................................................... 45 6.7. Drought ............................................................................................................................................ 45 6.8. Discharges ...................................................................................................................................... 46 MAR5044-RT001-R02-00 The Impact of Abstraction Reform Public water supply operations 7. The Cam and Ely Ouse _______________________________________________ 46 7.1. Introduction ...................................................................................................................................... 46 7.2. Transfers ......................................................................................................................................... 49 7.2.1. Raw water transfers from the catchment ........................................................................... 49 7.2.2. Normal operations .............................................................................................................. 50 7.2.3. Drought operations ............................................................................................................ 52 7.2.4. Effluent Returns ................................................................................................................. 53 8. The Trent and Derwent _______________________________________________ 53 8.1. Introduction ...................................................................................................................................... 53 8.2. Normal operations ..........................................................................................................................
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