40009 - Teise at Stone Bridge

Grid Reference:	51 (TQ) 718 399
Operator:	EA
Local number:	453230001
Catchment Area:	136.2 km²
Level of Station:	24.5 mOD
Max. Altitude:	201.0 mOD
Mean flow:	1.35 m³s^-1
95% exceedance (Q95):	0.215 m³s^-1
10% exceedance (Q10):	2.58 m³s^-1
61-90 Av. Ann. Rainfall:	810 mm

Sample Hydrograph of Gauged Daily Flows

Flow Duration Curve for Gauged Daily Flows

Station Description

Flat V weir (commissioned 09/95), 7m wide, superseded a broad-crested weir (crest width: 5.95m; weir capacity: approx. 3 cumecs) in trapezoidal section; weedgrowth could cause problems and no high flow gaugings pre-1995. Cableway at site - calibration now extends throughout the flow range (but less reliable above bankfull); gauging of 54 cumecs after the 10/2000 peak. Significant baseflow but responsive also. Bewl Water Reservoir offtake is c1km u/s. Augmentation (from Bewl Water) dominates post-1976 low flow patterns. Also some regulation from Hope Mill Sluice approx. 3.2km u/s.

Catchment Description

A largely rural catchment with scattered settlements developed on the sands and clay of the Wealden Series.

Factors Affecting Runoff

Regulation from surface water and/or ground water.
Runoff reduced by public water supply abstraction.
Runoff influenced by groundwater abstraction/recharge.
Runoff increased by effluent returns.

River Flow and Catchment Rainfall on the National River Flow Archive

Gauged Daily Flows (gdf):	1961 to 2008
Naturalised Monthly Flows (nmf):	1965 to 1967
Monthly Catchment Rainfall (rnf):	1961 to 2008

Datatype	1960s										1970s										1980s										1990s										2000s

gdf
nmf
rnf

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.

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