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Although chalk streams are generally watercourses originating from chalk hills, including winterbournes, streams, and rivers, the term chalk stream is used even for larger rivers, which would normally be considered too large for the term stream. The Somme in northern France is a chalk stream on a larger scale.
A project starts to rejuvenate the biodiversity and wildlife in a stretch of river.
The river is one of the world's premier chalk streams for fly fishing, [1] amenable to dry fly or nymphing. The local chalk aquifer has excellent storage and filtration and the river has long been used for drinking water. Watercress thrives in its upper reaches. [2]
The word bourne derives from the Anglo-Saxon word for a stream. [1] It is an unnavigable tributary of the River Gade, which flows into the River Colne, which in turn is a tributary of the River Thames. The Bulbourne is an example of a chalk stream, which is a watercourse that flows from chalk-fed groundwater. Chalk streams are a very rare ...
Action by Wildlife Trusts to protect habitats in the face of climate change comes as the network of charities warns of risks to its reserves.
Chalk streams are a threatened habitat, hit by over-abstraction and climate change reducing the amount of water in them, while pollution and invasive species are also damaging the waterways and ...
The River Chess is a chalk stream that rises near Chesham in the Chiltern Hills, and flows for 11 miles (18 km) through Buckinghamshire and Hertfordshire to its confluence with the River Colne in Rickmansworth. The Chess, along with the Colne and Gade, gives rise to the name of the district of Three Rivers.
The Chalk Group (often just called the Chalk) is the lithostratigraphic unit (a certain number of rock strata) ... Chalk stream; Downland; Geology of Great Britain;