39023 - Wye at Hedsor
|
Grid Reference: | 41 (SU) 896 867 | 
|
| Operator: | EA |
| Local number: | 2590 |
|
Catchment Area: | 137.3 km2 |
| Level of
Station: | 26.8 mOD |
| Max. Altitude: | 244.0 mOD |
|
Mean flow: | 1.01 m3s-1 |
| 95% exceedance (Q95): | 0.472 m
3s-1 |
| 10% exceedance
(Q10): | 1.52 m3s-1 |
|
61-90 Av. Ann. Rainfall: | 755 mm |
Sample Hydrograph of Gauged Daily Flows
Flow Duration Curve for Gauged
Daily Flows
Station Description
Crump weir, 6.1m broad installed on a slight
bend. Modular throughout the flow range. All but extreme floods contained. Low
flows are significantly influenced by abstractions (particularly groundwater)
and discharges (e.g. Wycombe STW) - mill operation evident in early record.
Flashy response from growing urban fraction but regime remains baseflow
dominated.Catchment Description
A
mainly pervious (Chalk) catchment with an overburden of Clay-with-Flints on the
higher ground. Dip-slope valley in the Chilterns; rural headwaters but contains
several growing urban/suburban centres in the lower valley (including Wycombe).
Factors Affecting Runoff
- Runoff
influenced by groundwater abstraction/recharge.
- Runoff reduced by
industrial/agricultural abstraction.
River
Flow and Catchment Rainfall on the National River Flow Archive
| Gauged Daily Flows (gdf): | 1964 to 2008 |
|
Monthly Catchment Rainfall (rnf): | 1964 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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