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This probabilistic forecast is issued by the Northeast River Forecast Center.
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About this graph
Forecasts for the Genesee River at Mount Morris Dam are issued routinely year-round.
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Upstream Gauge - at Portageville Upstream Gauge Downstream Gauge Downstream Gauge - at Avon
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 760
Moderate Flood Stage: 760
Flood Stage: 760
Action Stage: 720
Low Stage (in feet): -9999

Historic Crests
(1) 755.00 ft on 06/23/1972

(P): Preliminary values subject to further review.

Recent Crests
(1) 755.00 ft on 06/23/1972

(P): Preliminary values subject to further review.

Low Water Records
(1) 575.00 ft on 09/01/1998
(2) 584.00 ft on 08/15/1996
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
760 Flood 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.
720 Action-alert stage. Pool significantly full. Increase monitoring.
600 Conservation pool, June 15 to November 1, maintained as close to this level as possible.
584 Pool elevation. Typical low level-uncontrolled.
575 River bed elevation.

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
Observations courtesy of the U.S. Army Corps Engineers.
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
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587 Aero Drive
Buffalo, NY 14225-1405
(716) 565-0204
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Page last modified: 2-Nov-2020 7:30 PM
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