4001 - Conon at Moy Bridge

Grid Reference:	28 (NH) 482 547
Operator:	SEPA
Local number:	110
Catchment Area:	961.8 km²
Level of Station:	10.0 mOD
Max. Altitude:	1052.0 mOD
Mean flow:	49.79 m³s^-1
95% exceedance (Q95):	10.62 m ³s^-1
10% exceedance (Q10):	97.98 m³s^-1
61-90 Av. Ann. Rainfall:	1770 mm

Sample Hydrograph of Gauged Daily Flows

Flow Duration Curve for Gauged Daily Flows

Station Description

Velocity-area station; 80m wide river section with cableway in straight reach (which stands appreciably above the valley bottom). Rare bypassing, via right floodbank, during extreme flows (notch installed in floodbank, following 1989 flood, to avoid catastrophic failure). Station resited 20m u/s in Jan 1976, early flows less reliable. Patchy records prior to 1970. Gauged to bankfull. Catchment enhanced by 20% due to transfers from the Orrin, Ewe, Broom and Carron catchments for power generation. Extensive volumes of surface storage controlled for power generation (but no further development after 1960). Hydrograph dominated by influence of Torr Achilty power station. Particularly low flows during commissioning of HEP scheme (e.g. Sept 1956).

Catchment Description

Impermeable bedrock with >50% overlain by superficial deposits. Mountainous with some afforestation.

Factors Affecting Runoff

Regulation for hydro-electric power.

River Flow and Catchment Rainfall on the National River Flow Archive

Gauged Daily Flows (gdf):	1947 to 2008
Monthly Catchment Rainfall (rnf):	1953 to 2008

Datatype	1940s										1950s										1960s										1970s										1980s										1990s										2000s

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