Home

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.

 

Chilterns ANOB

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

Notice of planned works to the River Chess at Chesham Moor

Exciting planned river restoration works at Chesham Moor will temporarily reduce access to the area this autumn/winter. Information about a...

Chilterns National Landscape secures funding to develop ‘Not Bourne Yesterday’

The Chilterns National Landscape has received a £350k grant from The National Lottery Heritage Fund for Not Bourne Yesterday: Chalk...

Welcome to the summer edition of the Chilterns Chalk Streams Project newsletter

Dear Friends, Welcome to the summer edition of the Chilterns Chalk Streams Project newsletter. This year promises to be the...

Events

Chilterns ANOB

Chess Citizen Science Stakeholder Event

  • Mon 30th September
  • 9.45am

We’re organising this event in the fifth year of the...

Chilterns ANOB

Riverfly Open Day 2024

  • Saturday 5th October
  • 12pm

The Chilterns Chalk Stream Project and Herts & Middlesex Wildlife Trust...

Chilterns ANOB

Night time Wildlife Riverside Walk

  • 5 October
  • 18:15

As the sun goes down we will be walking along...

Chilterns ANOB

Are you a Chessnut?

  • 6 November
  • 19:00

Don't miss the opportunity to hear the updates on the...

Chilterns ANOB

Chilterns ANOB
Chilterns ANOB

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.
Chilterns ANOB

Keep in touch!

Sign up for our email newsletter to ensure you never miss out on news and events on the Chilterns chalk streams.