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About: Chalk stream     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Thing100002452, within Data Space : dbpedia.org associated with source document(s)

Type: yago:WikicatWaterStreamsriveryago:BodyOfWater109225146yago:PhysicalEntity100001930yago:YagoGeoEntityyago:YagoPermanentlyLocatedEntityyago:Stream109448361yago:Thing100002452 New Facet based on Instances of this Class

Chalk streams are rivers that rise from springs in landscapes with chalk bedrock. Since chalk is permeable, water percolates easily through the ground to the water table and chalk streams therefore receive little surface runoff. As a result, the water in the streams contains little organic matter and sediment and is generally very clear. The beds of the rivers are generally composed of clean, compacted gravel and flints, which are good spawning areas for Salmonidae fish species. Of the 210 rivers classified as chalk streams globally, 160 are in England.