39122 - Cranleigh Waters at Bramley
| Grid Reference: | 41 (SU) 999 462 | 
|
| Operator: | EA |
| Local number: | 3069 |
|
Catchment Area: | 109.5 km2 |
| Level of
Station: | 34.9 mOD |
| Mean flow: | 1.12
m3s-1 |
| 95% exceedance
(Q95): | 0.199 m3s-1 |
| 10% exceedance (Q10): | 2.5 m
3s-1 |
| 61-90 Av. Ann. Rainfall: | 787 mm
|
Sample Hydrograph of Gauged Daily Flows
Flow Duration
Curve for Gauged Daily Flows
Station Description
Multi-path cross-configuration
ultrasonic gauging station beneath road bridge; enlarged bridge opening creates
large capacity but, correspondingly, low velocities; these can impact on low
flow precision. Full range station. Notable Nov. 2000 peak under review. Flashy
response with lengthy periods of very low flow. Low flows influenced by
effluent returns. Station is used for flood monitoring purposes.Catchment Description
Predominantly impervious Weald
Clay with some Lower Greensand in lower reaches. A largely rural catchment
(south of Guildford) centred on Cranleigh.Factors
Affecting Runoff
- Runoff increased by effluent returns.
River Flow and Catchment Rainfall on the National
River Flow Archive
| Gauged Daily Flows (gdf):
| 1990 to 2008 |
| Monthly Catchment Rainfall (rnf): | 1961 to 2008
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| Datatype | 1960s |
1970s | 1980s | 1990s | 2000s |
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For many stations monthly peak flows are
also archived. When daily flow data are not available monthly mean flows may be
held on the National River Flow Archive. See Data
Holdings for further information.
NRFA Home Page
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Data Holdings