84014 - Avon Water at Fairholm

Grid Reference:26 (NS) 755 518
Operator:SEPA
Local number:104
Catchment Area:265.5 km2
Level of Station:53.9 mOD
Max. Altitude:475.0 mOD
Mean flow:7.75 m3s-1
95% exceedance (Q95):  0.532 m 3s-1
10% exceedance (Q10):  20.16 m3s-1
61-90 Av. Ann. Rainfall:  1265 mm

Sample Hydrograph of Gauged Daily Flows

Flow Duration Curve for Gauged Daily Flows

Station Description

Velocity-area station; approx. 25m wide section in a very straight uniform reach. Rock platform below a bridge forms the control. Ratings extrapolated above 2.2m. All flows contained. Some monthly naturalised flows (1964-74). Two small reservoirs in the catchment but flow pattern remains responsive.

Catchment Description

Predominantly upland catchment. Mostly ORS and Carboniferous formations extensively overlain by superficial deposits; mainly Boulder Clay with peat in the headwaters. Land use hill grazing, moorland, rough and improved pasture, and forest cover (>15%).

River Flow and Catchment Rainfall on the National River Flow Archive

Gauged Daily Flows (gdf):1964 to 2008
Naturalised Monthly Flows (nmf):1964 to 1974
Monthly Catchment Rainfall (rnf):1964 to 2008
                                                         
Datatype1960s1970s1980s1990s2000s
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.

NRFA Home Page     Station Summaries     Regional Maps     Data Holdings