25008 - Tees at Barnard Castle

Grid Reference:	45 (NZ) 047 166
Operator:	EA
Local number:	3504
Catchment Area:	509.2 km²
Level of Station:	133.0 mOD
Max. Altitude:	636.0 mOD
Mean flow:	14.02 m³s^-1
95% exceedance (Q95):	3.82 m³s^-1
10% exceedance (Q10):	31.23 m³s^-1
61-90 Av. Ann. Rainfall:	777 mm

Sample Hydrograph of Gauged Daily Flows

Flow Duration Curve for Gauged Daily Flows

Station Description

Compound Crump weir 52.4m broad with central low flow crest (7m). Theoretical calibration (check gaugings up to medium flows). Full range and modular. Responsive regime. Six reservoirs command 35.5% of catchment including Cow Green (59 sq.km) which regulates flow for PWS abstractions and maintains min. d/s flows. Net export of water. Augmentation by Kielder transfer in exceptional drought years.

Catchment Description

Upland Pennine catchment developed mostly on Carboniferous L'st and Millstone Grit, with nearly 80% superficial deposits of peat in headwaters and boulder clay in valley. Land use almost entirely moorland and grass pasture.

Factors Affecting Runoff

Reservoir(s) in catchment affect runoff.
Regulation from surface water and/or ground water.
Runoff reduced by industrial/agricultural abstraction.

River Flow and Catchment Rainfall on the National River Flow Archive

Gauged Daily Flows (gdf):	1966 to 2008
Naturalised Daily Flows (ndf):	1966 to 1971
Naturalised Monthly Flows (nmf):	1966 to 1973
Monthly Catchment Rainfall (rnf):	1961 to 2008

Datatype	1960s										1970s										1980s										1990s										2000s

gdf
ndf
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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