Cranleigh Waters

The Cranleigh Waters or Bramley Wey is a tributary of the River Wey in Surrey.

Cranleigh Waters
Bramley Wey
Ruins of Gosden Aqueduct which carried the
Wey and Arun Canal over Cranleigh Waters.
Location
CountryEngland
CountySurrey
DistrictsGuildford, Waverley
Mole Valley (unnamed tributaries only)
Physical characteristics
Source 
 • locationWalliswood, Surrey, England
 • coordinates51°8′14″N 0°24′51″W
 • elevation45 m (148 ft)
MouthRiver Wey
 • location
Shalford
Discharge 
 • locationBramley
 • average1.10 m3/s (39 cu ft/s)
 • minimum0.16 m3/s (5.7 cu ft/s)(19 June 1998)
Basin features
Tributaries 
 • leftBirtley Brook, Ridings Brook, North Brook,
Great Brook, Scotsland Brook,
Cold Bourne, Nore Brook/Smithbrook
 • rightThornhurst Brook, Coneyhurst Gill,
Cobbler's Brook

Course

The Cranleigh Waters or Bramley Wey rises at a source close to the sources of two tributaries, the Thornhurst Brook and Coneyhurst Gill in the rural north of Cranleigh, each flowing initially southwestwards to Vachery Pond, before turning to run northwards as the border of Wonersh and Bramley to meet the Wey at Shalford.[1][2]

From the Vachery Pond to the Wey, Cranleigh Waters is closely paralleled by the disused Wey and Arun Canal, which crosses the river at Gosden Aqueduct.[2]

Other tributaries

Cobblers Brook

The Cobblers Brook also rises in the Greensand Ridge as three headwaters in the north of Ewhurst and drains that parish entirely southwards, before flowing west via the Baynards Park estate in Cranleigh into the Vachery Pond.[2]

Unnamed streams in Walliswood

A central natural drainage divide cuts off the rural west and south of the Walliswood hamlet of Abinger, Surrey from the rest of it. This part has three unnamed streams which drain a small fraction of the long north–south oriented parish (lying east of Ewhurst) and flow into the Cobblers Brook in the far south of Ewhurst.[2]

Named left tributaries

These eight left tributaries (when looking downstream in the conventional way) are considerably shorter than the three principal right tributaries and drain a portion of Dunsfold and almost all of Bramley (parishes). They are separated from the River Wey (south branch) by a western high and wide outcrop of the Greensand Ridge.

Water quality

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.[3]

Water quality of the Cranleigh Waters in 2019:

SectionEcological
Status		Chemical
Status		Overall
Status		LengthCatchmentChannel
Cranleigh Waters[4] Moderate Fail Moderate 28.873 km (17.941 mi) 110.989 km2 (42.853 sq mi)

References
  1. Gallois RW; Worssam BC; Thurrell RG (1993). Geology of the County around Horsham. London: HMSO. pp. 95–101. ISBN 978-0-11-884480-2.
  2. OS Map of English Heritage Listed Buildings and Parks and Gardens Database Archived April 24, 2012, at the Wayback Machine
  3. "Glossary (see Biological quality element; Chemical status; and Ecological status)". Catchment Data Explorer. Environment Agency. 17 February 2016. Text was copied from this source, which is available under an Open Government Licence v3.0. © Crown copyright.
  4. "Cranleigh Waters". Catchment Data Explorer. Environment Agency.
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