25004 - Skerne at South Park

Grid Reference:	45 (NZ) 284 129
Operator:	EA
Local number:	3702
Catchment Area:	250.1 km²
Level of Station:	34.1 mOD
Max. Altitude:	222.0 mOD
Mean flow:	1.58 m³s^-1
95% exceedance (Q95):	0.365 m ³s^-1
10% exceedance (Q10):	3.206 m³s^-1
61-90 Av. Ann. Rainfall:	644 mm

Sample Hydrograph of Gauged Daily Flows

Flow Duration Curve for Gauged Daily Flows

Station Description

Compound broad-crested weir, unlikely to drown. Often out of bank, but the overbank flow passes over the two side weirs. Fish pass constructed winter 1995/6. Channel rehabilitation u/s to improve aquatic habitat and maintain low flows. Channel rehabilitation u/s to improve aquatic habitat and maintain low flows. Reservoir in headwaters. Significant sewage effluent component in low flows. Pumped minewaters can also augment flow (a declining contribution). Excess flow from the Cocker Beck (30.8 km2) diverted (u/s of Darlington) directly to the Tees.

Catchment Description

Catchment underlain by highly permeable Magnesian L'st, but with > 90% superficial deposits, mainly boulder clay. Dominated by mixed agriculture, considerable urban development d/s.

Factors Affecting Runoff

Runoff influenced by groundwater abstraction/recharge.
Runoff increased by effluent returns.
Runoff reduced by industrial/agricultural abstraction.

River Flow and Catchment Rainfall on the National River Flow Archive

Gauged Daily Flows (gdf):	1956 to 2007
Naturalised Daily Flows (ndf):	1965 to 1970
Naturalised Monthly Flows (nmf):	1957 to 1970
Monthly Catchment Rainfall (rnf):	1956 to 2008

Datatype	1950s										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.

NRFA Home Page Station Summaries Regional Maps Data Holdings