Cotswolds Abstraction Licensing Strategy
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Cotswolds Abstraction Licensing Strategy A strategy to manage water resources sustainably March 2019 We are the Environment Agency. We protect and improve the environment. We help people and wildlife adapt to climate change and reduce its impacts, including flooding, drought, sea level rise and coastal erosion. We improve the quality of our water, land and air by tackling pollution. We work with businesses to help them comply with environmental regulations. A healthy and diverse environment enhances people's lives and contributes to economic growth. We can’t do this alone. We work as part of the Defra group (Department for Environment, Food & Rural Affairs), with the rest of government, local councils, businesses, civil society groups and local communities to create a better place for people and wildlife. Published by: © Environment Agency 2019 Environment Agency All rights reserved. This document may be Horizon House, Deanery Road, reproduced with prior permission of the Bristol BS1 5AH Environment Agency. www.gov.uk/environment-agency Further copies of this report are available from our publications catalogue: http://www.gov.uk/government/publications or our National Customer Contact Centre: 03708 506 506 Email: enquiries@environment- agency.gov.uk 2 of 30 Contents 1. About the licensing strategy ......................................................................................... 4 2. Water resource availability of the Cotswolds ALS ...................................................... 5 Resource availability assessment .............................................................................. 5 Water resource availability colours and implications for licensing ........................... 10 Groundwater resource availability ........................................................................... 10 Resource reliability .................................................................................................. 11 Other considerations for availability and reliability ................................................... 13 Impoundments ......................................................................................................... 13 3. How we manage abstraction in the Cotswolds ALS ................................................. 13 Thames bespoke licensing strategy ........................................................................ 13 Resource availability with the Thames bespoke strategy applied ............................ 15 Resource reliability with the Thames bespoke licensing strategy applied ............... 20 Assessment points .................................................................................................. 21 4. Managing existing licences ........................................................................................ 24 Water rights trading ................................................................................................. 24 Taking action on unsustainable abstraction ............................................................. 25 Regulating currently exempt abstraction ................................................................. 26 5. List of abbreviations .................................................................................................... 27 6. Glossary ....................................................................................................................... 29 3 of 30 1. About the licensing strategy This strategy sets out our approach to managing new and existing abstraction and impoundment within the Cotswolds catchment in the Thames river basin district. The Cotswold abstraction licensing strategy (ALS) area covers approximately 1200 Km2 and contains a series of rivers sourcing from springs from the Limestone of the Cotswold Hills and flowing south east to join the Thames on the southern boundary of the catchment area. The main rivers are the River Churn, Ampney Brook and the River Coln to the west, and the Rivers Leach, Windrush, and Evenlode to the north east. After sourcing from the Limstone springs, the rivers in the Cotswolds ALS area flow over clay overlain by sand and gravel deposits. Map 1: The Cotswolds Abstraction Licensing Strategy area showing the Assessment Points (APs) used in this licensing strategy. © Environment Agency copyright and/or database right 2019. All rights reserved. This map includes data supplied under licence from: © Crown Copyright and database right 2019. All rights reserved. Ordnance Survey licence number 100024198. Legend Assessment Points Rivers 4 of 30 Our approach ensures that River Basin Management Plan objectives for water resources activities are met and we avoid deterioration within this catchment. We apply this approach to the water body in which the abstraction is located. It also applies to all downstream surface water bodies that may be affected by any reduction in abstraction-related river flow, or groundwater bodies affected by any reduction in groundwater level or change in flow directions. Please see Managing Water Abstraction for the technical explanation, legal and policy requirements behind the ALS. Please see abstraction pages on gov.uk for advice on who needs an abstraction or impoundment licence, and how to apply. 2. Water resource availability of the Cotswolds ALS Resource availability assessment The water resource availability, calculated at four different flows, Q95 (the flow of a river which is exceeded on average for 95% of the time i.e. low flow), Q70, Q50, and Q30 for this ALS is presented and explained in this section and section 3. Maps 2-5 show the resource availability for the Cotswolds based on our resource assessment as described in Managing Water Abstraction. The Thames area has a bespoke licensing strategy (described in section 3.1) that applies to the Cotswolds. This modifies the water resource availability. Maps 8-11 in section 3.2 show the resource availability for the Cotswolds after the Thames bespoke licensing strategy is applied. 5 of 30 Map 2: Water resource availability colours at Q30 for the Cotswolds ALS. © Environment Agency copyright and/or database right 2019. All rights reserved. This map includes data supplied under licence from: © Crown Copyright and database right 2019. All rights reserved. Ordnance Survey licence number 100024198. Legend Assessment Points Heavily Modified Artificial lakes Assessment Point Boundaries Water body boundaries Rivers Water Availability at Q30: Water available Restricted water available Water not available 6 of 30 Map 3: Water resource availability colours at Q50 for the Cotswolds ALS. © Environment Agency copyright and/or database right 2019. All rights reserved. This map includes data supplied under licence from: © Crown Copyright and database right 2019. All rights reserved. Ordnance Survey licence number 100024198. Legend Assessment Points Heavily Modified Artificial lakes Assessment Point Boundaries Water body boundaries Rivers Water Availability at Q50: Water available Restricted water available Water not available 7 of 30 Map 4: Water resource availability colours at Q70 for the Cotswolds ALS. © Environment Agency copyright and/or database right 2019. All rights reserved. This map includes data supplied under licence from: © Crown Copyright and database right 2019. All rights reserved. Ordnance Survey licence number 100024198. Legend Assessment Points Heavily Modified Artificial lakes Assessment Point Boundaries Water body boundaries Rivers Water Availability at Q70: Water available Restricted water available Water not available 8 of 30 Map 5: Water resource availability colours at Q95 for the Cotswolds ALS © Environment Agency copyright and/or database right 2019. All rights reserved. This map includes data supplied under licence from: © Crown Copyright and database right 2019. All rights reserved. Ordnance Survey licence number 100024198. Legend Assessment Points Heavily Modified Artificial lakes Assessment Point Boundaries Water body boundaries Rivers Water Availability at Q95: Water available Restricted water available Water not available 9 of 30 Water resource availability colours and implications for licensing The implications of the resource availability colours for licensing under the different flow scenarios (Q30, Q50, Q70 and Q95) are described below. The Thames area has a bespoke licensing strategy that applies to the Cotswolds ALS as described in section 3.1. This bespoke strategy modifies the water resource availability, the implications of which are shown in section 3.2. Water available for licensing Green In this flow scenario, there is more water than required to meet the needs of the environment. New licences can be considered at this flow but may be constrained to protect local features. Restricted water available for licensing Yellow In this flow scenario, full licensed flows fall below the Environmental Flow Indicator (EFI) in this and/or a downstream water body(ies). If all licensed water is abstracted there will not be enough water left for the needs of the environment. No new consumptive licences would be granted at this flow. Water may be available if you can ‘buy’ (known as water rights trading - see section 4.1) the entitlement to abstract water from an existing licence holder. It is likely we'll be taking action to reduce full licensed risks. Water not available for licensing Red In this flow scenario, recent actual flows are below the EFI in this and/or a downstream water body(ies). This scenario highlights water bodies in which abstraction is contributing