Chalk streams are rivers that rise from springs in landscapes with chalk bedrock. Since chalk is permeable, water easily percolates through the ground to the water table and chalk streams therefore re
River Ver
…The Ver is a 28 km (17 mi) long chalk stream in Hertfordshire, England. It is a tributary of the River Colne. The source is in the grounds of Lynch Lodge, Kensworth Lynch on the west side of the…
The River Bourne at Winterbourne Gunner, a typical chalk stream
Commercial watercress production near New Alresford in Hampshire