39121 - Thames at Walton

Grid Reference:51 (TQ) 099 670
Operator:EA
Local number:3100
Catchment Area:9291.5 km2
Level of Station:8.9 mOD
Mean flow:56.34 m3s-1
95% exceedance (Q95):  9.27 m3s-1
10% exceedance (Q10):  141.0 m 3s-1
61-90 Av. Ann. Rainfall:  705 mm

Sample Hydrograph of Gauged Daily Flows

Flow Duration Curve for Gauged Daily Flows

Station Description

Ultrasonic gauging station, multi-path, cross configuration. Gaugings confirm calibration. In hot weather the gauge can malfunction (due to temperature gradients in the measuring section). No routine naturalisation - therefore d/s Kingston (39001) series is more hydrologically representative).

Catchment Description

Scarp and vale topography developed on diverse geology. Predominately rural headwaters contrast with considerable suburban growth in the lower valley.

River Flow and Catchment Rainfall on the National River Flow Archive

Gauged Daily Flows (gdf):1991 to 2008
Monthly Catchment Rainfall (rnf): 1991 to 2008
                       
Datatype1990s2000s
gdf          
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.


NRFA Home Page     Station Summaries     Regional Maps     Data Holdings