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UK Catchment Description:
 

Project Tasks: UK project component

In England and Wales, water abstraction is generally licensed, the process being administered by the Environment Agency. In 1999, the UK Government proposed 'Catchment Abstraction Management Strategies' (CAMS), for sustainable management of water resources at a local level. England and Wales are now divided into 129 CAMS 'areas'.The UK project team is working with the Environmental Agency, as they develop their management strategies for the area.


The Loddon Catchment:

The catchment of the River Loddon, and associated smaller tributaries and streams, covers an area of 680 km2, including parts of the counties of Surrey, Hampshire and Berkshire.

  • The source of the river rises from the chalk area at the southern end of the catchment, flowing north-easterly over first chalk then clay, and eventually joins the Thames River.

  • The main tributary, the River Blackwater flows mainly over sands and gravels, and joins the Loddon about half-way along it's length.

  • The catchment is predominantly rural and agricultural, and contains many Sites of Special Scientific Interest (SSSIs), which are primarily located in the south.

  • The rivers within the Loddon are generally of good quality water with extensive coarse and salmonid fisheries.

  • Supplying public water demand is achieved entirely from groundwater, and this use accounts for 55% of the total abstractions within the catchment.

  • One major issue facing the Loddon catchment in the near future is urban development and expansion. The growth in areas around Basingstoke, Reading and the Blackwater Valley are likely to put increasing pressure not only on increasing the demand for water, but also the subsequent increase in treated effluent.
  • The challenge is to maintain water supplies to a rapidly increasing urban population, while attempting to retain sufficient water in the natural system for recreational use and to support river bank and wetland habitats.
  • The Environment Agency posted 400 leaflets to potential stakeholders and stakeholder groups asking for comments on the proposed Loddon Catchment Abstraction Management Strategy (CAMS). Based on the responses, a number of stakeholders were selected to form the Loddon CAMS stakeholder group.
  • Loddon CAMS Stakeholder Group Membership
Stakeholder
Representative
Nomination
Strategic Abstraction
South East Water
Rohan Loh
Non-strategic Abstraction
National Farmers Union (NFU)
David Janaway
Conservation
The Wildlife Trusts
Debbie Wicks
Recreation Blackwater Valley Recreation Management Service Steve Bailey
Fisheries
Fisheries Consultative Committee
Mark Hatcher
Councils Planning Department Wokingham District Council Conrad Moore

The next step in the project was to identify how we could best use a Bayesian network to help with the CAMS strategy; details of the network construction are presented in the following pages.


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