The Rye is a stream rising east of Ashtead and flowing into the River Mole near Leatherhead, Surrey.[1]
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The Rye | |
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Location | |
Country | England |
Region | South East |
District | Mole Valley District |
City | Leatherhead |
Physical characteristics | |
Source | Ashtead Common |
Mouth | River Mole |
• location | Leatherhead |
The Rye Brook flows westwards across Ashtead Common, through the Ashtead Common National Nature Reserve, managed by the City of London Corporation. For much of its course the brook follows a straight channelled course which was dug during the Second World War in order to drain the surrounding land so that it could be used for agriculture. Under a recent (2005) initiative by the City of London Corporation, parts of the course have been remodelled. The remodelling includes meandering and reprofiling the riverbed, banks and adjacent land to create a more natural setting, in order to create a wetland habitat that will encourage a diverse wildlife.
The Environment Agency measures the water quality of the river systems in England. Each is given an overall ecological status, which may be one of five levels: high, good, moderate, poor and bad. There are several components that are used to determine this, including biological status, which looks at the quantity and varieties of invertebrates, angiosperms and fish. Chemical status, which compares the concentrations of various chemicals against known safe concentrations, is rated good or fail.[2]
Water quality of the Rye in 2019:
Section | Ecological Status | Chemical Status | Overall Status | Length | Catchment | Channel |
---|---|---|---|---|---|---|
Rye Brook at Ashtead[3] | Moderate | Fail | Moderate | 1.977 km (1.228 mi) | 16.105 km2 (6.218 sq mi) |
Hydrology of Surrey | ||
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Main rivers | ||
Canals and Navigations | ||
Ordinary watercourses | ||
Lakes, ponds and wetlands |
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Reservoirs | ||
Categories: Rivers, Canals |
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