Protecting our valuable chalk streams

We are pleased to bring you the first of a series of short articles on issues relating to the environment and sustainability. Out of necessity, the Parish Council has had to spend the last few years focusing its time, energy and resources on improving the condition and reducing the energy usage of our parish assets, especially the Village Hall and the Brand Pavilion. Although there are still some jobs to do, this year, we are pleased to be able to direct our energies toward environmental issues, both local and national. There is a lot we would like to do, and we would really like residents to contribute their ideas and their time to improving the sustainability and safeguarding the very special environment of our beautiful village. Please contact us via our clerk if you are interested in helping us to achieve these aims.

Did you know……?

Over 85% of the worlds chalk streams are found in Southern and Eastern England.

Often referred to as ‘England’s rainforests’, chalk streams spring up from underground chalk reservoirs; their clear, shallow waters making them havens to hundreds of wildlife species.

In Chrishall, we are part of this important water system. Rainfall here adds to the the aquifers which feed the chalk streams of the Granta which runs into the Cam.

 

Most water we drink in the East comes from rainwater stored deep beneath our feet in natural chalk ‘aquifers’, which feed our chalk streams. Chalk streams also need good water quality for different species of fish, plants and insects to flourish. However they face significant challenges in the 21st century due to complex problems worsened by climate change and population growth. Heavy rainfall can overwhelm and swamp chalk aquifers, streams and rivers. Over-use of chemicals can damage the balance the chalk ecostructure and even break down or dissolve chalk beds. In times of drought, excessive drawing on water reserves can dry out chalk streams and aquifers.

What can we do to protect this unique environment?

It is easy to feel overwhelmed by climate change, but as individuals and communities there are things we can do to make things a little better.

We can reduce run off from rooftops to roads, by gathering rainfall in the ground and in rainbutts.

We can ensure that, wherever possible, downpipes from houses do not run directly into roadside drains.

We can avoid use of chemicals which can damage the chalk in our aquifers.

We can reduce water use before and during times of drought to reduce pressure on our water supply system. Rain butts can help.

Be informed. Searching Protecting Chalk Streams will locate key information and existing and planned strategies for responses. The Environment Agency, Water Companies and pressure groups convey clear perspectives and ‘Chalk Stream Strategy – CaBA’ is an interesting starting point for further research.

Apply pressure – let your elected local and national representatives know that this is important to you, so they have an opportunity to respond.