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Chalk streams are a characteristic and attractive feature of the Chilterns landscape. They are also a globally rare habitat. In fact there are only 283 chalk streams in the UK, and the UK accounts for around 85% of the global total.

Chalk streams are important habitats for wildlife and support a massive range of species. They are home to some of our most threatened plants and animals, such as the water vole and brown trout. They also have a fascinating history and supported many thriving industries in the past.

Our three films provide an excellent overview, explaining ‘What are chalk streams, and why are they special‘, How chalk streams work, and exploring the threats they face.

The nine Chilterns’ chalk streams are so important that a special partnership project has been created to conserve them. Uniting all the organisations with an interest in the streams, the Chilterns Chalk Streams Project works with local people across the Chilterns to improve river habitats, improve access and enjoyment and promote the sustainable use of water.

 

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Chilterns Chalk Streams Project Annual Report

Read our latest Annual Report to find out more about the work of the Chilterns Chalk Streams Project.

Recent News

Our River’s Films

Funded by Smarter Water Catchment Project the CCSP education team have produced a series of films with local schools. Have...

Chesham Moor – Temporary footbridge closure and path diversion

Temporary footbridge closure and path diversion at junction of Bois Moor Road and Moor Road 25th to 28th November.  ...

Scarp slope streams

Scarp slope streams in the north-west facing escarpment of the Chilterns have been often overlooked in the past. The Chilterns...

Events

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Ewelme Watercress Beds & Local Nature Reserve

  • December 2024
  • 10:30

Open days and guided walk are arranged around the Ewelme...

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Riverfly monitoring: Guided walk and survey of the River Bulbourne

  • 12 January
  • 11:00

Everyone is welcome to this event organized by the Chilterns...

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Spring 2025 Riverfly Training Day

  • 12 April
  • 09:00

Join us for our Spring Riverfly Monitoring Training day. This...

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Spring 2025 Extended Riverfly Training Day

  • 1 March
  • 10:00

Already confident in the Riverfly method? Join us to learn...

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River Chess Smarter Water Catchment

We're key partners in this ground breaking initiative - working on a catchment scale to restore one of the Chilterns’ finest chalk streams to health.
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