| River Ash | |
|---|---|
.jpg) Reach with wider banks, reeds and woodland close to Shepperton Studios | |
.svg) The southernmost inner west-east line marks the end of the river, the rest is wholly in the same Borough shown. | |
| Location | |
| Country/Nation | United Kingdom |
| Region/Country | England |
| County | Surrey |
| City | Sunbury-on-Thames, Shepperton, Littleton 51°24′25″N 0°28′08″W / 51.407°N 0.469°W, Laleham, Ashford, Staines-upon-Thames |
| Physical characteristics | |
| Source | Sluice against lower River Colne |
| • location | Staines-upon-Thames, Spelthorne, England, United Kingdom |
| • elevation | 14 m (46 ft) |
| Mouth | River Thames |
• location | Sunbury-on-Thames and Shepperton, Spelthorne, England, United Kingdom |
• elevation | 8.6 m (28 ft) |
| Length | 10 km (6.2 mi)[1] |
| Width | |
| • minimum | 2 feet (0.61 m) |
| • average | 6 feet (1.8 m) |
| • maximum | 20 feet (6.1 m) |
| Depth | |
| • minimum | 0.5 feet (0.15 m) |
| • average | 1.5 feet (0.46 m) |
| • maximum | 5 feet (1.5 m) |
| Basin features | |
| Progression | Colne—Ash—Thames |
| Artificial extra source: outflow of un-useable water from fresh waterworks | |
River Ash and North Thames Reservoirs | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The River Ash is a small, shallow river in Surrey, England. Its course of 10 kilometres (6.2 mi) is just outside Greater London. Work has been carried out to re-align, clear and build up a small, Littleton head of water and create two backwaters. One backwater dates to the medieval period; the other to the 1990s. It flows as one of the six distributaries of the River Colne from the south of Staines Moor immediately south of the Staines Bypass eastwards through the rest of the borough of Spelthorne before meeting the River Thames.
It is not navigable to craft and is rich in plant and insects, particularly reeds, diverse sedges (many of which commonly called bulrushes), pond-skaters, amphibians and lepidoptera (moths and butterflies). It enhances the Ash Link Nature Reserve, Studios Walk woodland biodiversity site and two parks. It is recognised as a key ecological feature within its borough.[1]