Cambridgeshire's chalk streams are globally significant ecosystems, representing 85% of the world's total. However, they face numerous threats including over-abstraction, pollution, and habitat degradation. The lack of comprehensive mapping data complicates conservation efforts. Economic growth and urban development exacerbate the strain on these delicate habitats.

The Greater Cambridge Chalk Stream Project (GCCSP) aims to address these challenges through collaboration between local councils, focusing on biodiversity net gain and sustainable water management. With funding secured, the GCCSP will implement strategic projects to restore and protect chalk streams.

Pollution, particularly from agriculture and urban runoff, poses a severe threat to water quality and biodiversity. Sedimentation and erosion further degrade habitats, while invasive species like American signal crayfish and Himalayan balsam disrupt the ecological balance.

To safeguard Cambridgeshire's chalk streams, proactive measures such as regenerative farming practices and riparian restoration are crucial. Long-term collaboration and evidence-based catchment plans will be essential for preserving these vital ecosystems in the face of growing pressures.