Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.

Weather Forecast Office Buffalo, NY

Northeast River Forecast Center

Air Quality Alert

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (EDT) Datum: Not Available Metadata

NOTE: Forecasts for the Genesee River at Mount Morris Dam are issued routinely year-round.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Upstream Gauge

Downstream Gauge

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

Zoom Level:16 Legend FEMA Layer Gauge Location Disclaimer 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

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.

About This Location

Latitude: 42.730556° N, Longitude: 77.904444° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 760 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other 0 ft 760 ft   Current/Historical Observations: Corps of Engineers (COE) Info for Mount Morris Dam U.S. Geological Survey (USGS) Data and Site Info for Mount Morris Dam

Additional Information

Observations courtesy of the U.S. Army Corps Engineers.

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Ohio Basin Water Resouces Outlook Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Northeast River Forecast Center Ohio River Forecast Center Snow Information Ensemble River Forecasts Hourly Precipitation

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