Mount Morris Dam near Mount Morris, NY

Site ID: MMDN6

County: Livingston

Ownership: U.S. Army Corps of Engineers

NWS Hydrologic Service Area: WFO BUF

Pool stage recorder is located at Mount Morris Dam on the Genesee River, 2.0 miles northwest of Mount Morris, 5.0 miles upstream from Canaseraga Creek, and 69.3 miles upstream for the mouth.
Dam and reservoir are located approximately halfway down the Genesee River. There are 1080 Sq. Mi. of drainage area upstream from the dam and about 1400 downstream to Rochester. Useable capacity is 336,800 acre-feet between 585.0 feet and 760 feet, the crest of the spillway. Discharge capacity 23700 cfs and is controlled by 9 gates.

USGS 1:24000 map: Mount Morris, NY

Latitude: 42° 44' 00"

Longitude: 77° 54' 40"

Basin area: 1080 Sq. Mi.

Gage Datum: sea level

Record stage: 755 ft on 23 June 1972. Storage reached 322,600 acre-feet or 98.7% of capacity below the spillway.

Dams upstream: None

Dams downstream: None

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Mean monthly flow (x 1000cfs) (1992- 1993)


Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
Flow
.60 .61 .62 .62 .59 .60 .73 .63 .59 .59 .59 .59
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Flow is highly regulated by the dam. For an estimate of unregulated flow in the vicinity, consider the USGS gages at Wellesville and Garbutt, New York.