Genesee River at Portageville, NY

Site ID: PRTN6

County: Wyoming

Ownership: USGS

NWS Hydrologic Service Area: WFO BUF

Gage is located on the left bank at Portageville, 500 feet downstream from bridge on State Highway 436, 800 feet upstream from abandoned railroad bridge piers, 0.9 miles upstream from Upper falls, and 89.8 miles upstream from the mouth.

USGS 1:24000 map: Portageville NY

Latitude: 42° 34' 13"

Longitude: 78° 02' 33"

Basin area: 984 Sq. Mi.

Gage Datum: 1080.00 ft msl

Record stage: 35.25 ft on 23 June 1972

and flow: 90,000 cfs (91 CSM)

Dams upstream: Seasonal variation from Rushford Lake. Diurnal fluctuation at low flow due to power plant.

Dams downstream: Mount Morris Dam

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Mean monthly flow (x 1000cfs) and CSM (1908 - 1993)


Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
Flow
1.2 2.8 2.2 2.4 .53 2.6 5.3 .75 .33 .13 .15 .39
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CSM
1.2 2.8 2.3 2.4 0.5 2.7 5.4 0.8 0.3 0.1 0.2 0.4
--- --- --- --- --- --- --- --- --- --- --- ---


Annual 1259 cfs/ 1.3 CSM
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