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Genesee River at Mount Morris Dam

National Weather Service gauge MMDN6 · New York · Livingston County · 42.7306, -77.9044 · USGS 04224000

Flood levels

Official flood levels at this gauge: action stage begins at 720.0 ft; minor flooding begins at 760.0 ft; moderate flooding begins at 760.0 ft; major flooding begins at 760.0 ft.

Action stage720.0 ft
Minor flooding760.0 ft
Moderate flooding760.0 ft
Major flooding760.0 ft

Highest recorded crests

What the water does

National Weather Service impact statements for this gauge, in the Weather Service's own words.

575.0 ftRiver bed elevation.
584.0 ftPool elevation. Typical low level-uncontrolled.
600.0 ftConservation pool, June 15 to November 1, maintained as close to this level as possible.
720.0 ftAction-alert stage. Pool significantly full. Increase monitoring.
760.0 ftFlood stage, capacity of dam is reached. Spillway utilized. Dam must release flow. Major flooding likely downstream all the way to Rochester area. Co-ordination necessary among affected agencies for possible evacuations.

Forecast office: NWS Buffalo · River Forecast Center: Northeast River Forecast Center.

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