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Over 200 USGS real-time streamgages used to support NWS river forecasts and warnings are at risk of being discontinued. Click here for more information from the USGS...
Weather Forecast Office Buffalo, NY Northeast River Forecast Center
Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Genesee River at Mount Morris Dam Pool (ft)Highest Observation: 589.69 ft at 4:00AM May 19, 2013Highest Observation: 589.69 ft at 4:30AM May 19, 2013Observed: 589.68 ft at 5:00AM May 19, 2013Observed: 589.68 ft at 5:30AM May 19, 2013Observed: 589.66 ft at 6:00AM May 19, 2013Observed: 589.65 ft at 6:30AM May 19, 2013Observed: 589.64 ft at 7:00AM May 19, 2013Observed: 589.64 ft at 7:30AM May 19, 2013Observed: 589.63 ft at 8:00AM May 19, 2013Observed: 589.61 ft at 8:30AM May 19, 2013Observed: 589.6 ft at 9:00AM May 19, 2013Observed: 589.6 ft at 9:30AM May 19, 2013Observed: 589.59 ft at 10:00AM May 19, 2013Observed: 589.59 ft at 10:30AM May 19, 2013Observed: 589.59 ft at 11:00AM May 19, 2013Observed: 589.58 ft at 11:30AM May 19, 2013Observed: 589.57 ft at 12:00PM May 19, 2013Observed: 589.56 ft at 12:30PM May 19, 2013Observed: 589.56 ft at 1:00PM May 19, 2013Observed: 589.55 ft at 1:30PM May 19, 2013Observed: 589.55 ft at 2:00PM May 19, 2013Observed: 589.55 ft at 2:30PM May 19, 2013Observed: 589.54 ft at 3:00PM May 19, 2013Observed: 589.54 ft at 3:30PM May 19, 2013Observed: 589.54 ft at 4:00PM May 19, 2013Observed: 589.53 ft at 5:30PM May 19, 2013Observed: 589.52 ft at 6:00PM May 19, 2013Observed: 589.52 ft at 6:30PM May 19, 2013Observed: 589.51 ft at 7:00PM May 19, 2013Observed: 589.51 ft at 7:30PM May 19, 2013Observed: 589.51 ft at 8:00PM May 19, 2013Observed: 589.5 ft at 8:30PM May 19, 2013Observed: 589.49 ft at 9:00PM May 19, 2013Observed: 589.48 ft at 10:30PM May 19, 2013Observed: 589.48 ft at 11:00PM May 19, 2013Observed: 589.48 ft at 11:30PM May 19, 2013Observed: 589.48 ft at 12:00AM May 20, 2013Observed: 589.48 ft at 12:30AM May 20, 2013Observed: 589.48 ft at 1:00AM May 20, 2013Observed: 589.47 ft at 1:30AM May 20, 2013Observed: 589.46 ft at 2:00AM May 20, 2013Observed: 589.46 ft at 2:30AM May 20, 2013Observed: 589.46 ft at 3:00AM May 20, 2013Observed: 589.44 ft at 3:30AM May 20, 2013Observed: 589.44 ft at 4:00AM May 20, 2013Observed: 589.44 ft at 4:30AM May 20, 2013Observed: 589.43 ft at 5:00AM May 20, 2013Observed: 589.43 ft at 5:30AM May 20, 2013Observed: 589.43 ft at 6:00AM May 20, 2013Observed: 589.42 ft at 6:30AM May 20, 2013Observed: 589.41 ft at 7:00AM May 20, 2013Observed: 589.41 ft at 7:30AM May 20, 2013Observed: 589.41 ft at 8:00AM May 20, 2013Observed: 589.41 ft at 8:30AM May 20, 2013Observed: 589.41 ft at 9:00AM May 20, 2013Observed: 589.41 ft at 9:30AM May 20, 2013Observed: 589.4 ft at 10:00AM May 20, 2013Observed: 589.4 ft at 10:30AM May 20, 2013Observed: 589.4 ft at 11:00AM May 20, 2013Observed: 589.4 ft at 11:30AM May 20, 2013Observed: 589.4 ft at 12:00PM May 20, 2013Observed: 589.4 ft at 12:30PM May 20, 2013Observed: 589.4 ft at 1:00PM May 20, 2013Observed: 589.4 ft at 1:30PM May 20, 2013Observed: 589.4 ft at 2:00PM May 20, 2013Observed: 589.4 ft at 2:30PM May 20, 2013Observed: 589.4 ft at 3:00PM May 20, 2013Observed: 589.4 ft at 3:30PM May 20, 2013Observed: 589.4 ft at 4:00PM May 20, 2013Observed: 589.4 ft at 4:30PM May 20, 2013Observed: 589.39 ft at 5:00PM May 20, 2013Observed: 589.38 ft at 6:30PM May 20, 2013Observed: 589.38 ft at 7:00PM May 20, 2013Observed: 589.38 ft at 7:30PM May 20, 2013Observed: 589.38 ft at 8:00PM May 20, 2013Observed: 589.38 ft at 8:30PM May 20, 2013Observed: 589.38 ft at 9:00PM May 20, 2013Observed: 589.38 ft at 9:30PM May 20, 2013Observed: 589.38 ft at 10:00PM May 20, 2013Observed: 589.37 ft at 10:30PM May 20, 2013Observed: 589.37 ft at 11:00PM May 20, 2013Observed: 589.37 ft at 11:30PM May 20, 2013Observed: 589.37 ft at 12:00AM May 21, 2013Observed: 589.36 ft at 1:30AM May 21, 2013Observed: 589.36 ft at 2:00AM May 21, 2013Observed: 589.36 ft at 2:30AM May 21, 2013Observed: 589.36 ft at 3:00AM May 21, 2013Observed: 589.35 ft at 3:30AM May 21, 2013Observed: 589.35 ft at 4:00AM May 21, 2013Observed: 589.35 ft at 5:30AM May 21, 2013Observed: 589.35 ft at 6:00AM May 21, 2013Observed: 589.35 ft at 6:30AM May 21, 2013Observed: 589.34 ft at 7:00AM May 21, 2013Observed: 589.34 ft at 7:30AM May 21, 2013Observed: 589.34 ft at 8:00AM May 21, 2013Observed: 589.34 ft at 8:30AM May 21, 2013Observed: 589.34 ft at 9:00AM May 21, 2013Observed: 589.34 ft at 9:30AM May 21, 2013Observed: 589.33 ft at 10:00AM May 21, 2013Observed: 589.33 ft at 10:30AM May 21, 2013Observed: 589.33 ft at 11:00AM May 21, 2013Observed: 589.33 ft at 11:30AM May 21, 2013Observed: 589.33 ft at 12:00PM May 21, 2013Observed: 589.33 ft at 12:30PM May 21, 2013Observed: 589.32 ft at 1:00PM May 21, 2013Observed: 589.32 ft at 1:30PM May 21, 2013Observed: 589.32 ft at 2:00PM May 21, 2013Observed: 589.32 ft at 2:30PM May 21, 2013Observed: 589.32 ft at 3:00PM May 21, 2013Observed: 589.32 ft at 3:30PM May 21, 2013Observed: 589.31 ft at 4:00PM May 21, 2013Observed: 589.31 ft at 4:30PM May 21, 2013Observed: 589.31 ft at 5:00PM May 21, 2013Observed: 589.31 ft at 5:30PM May 21, 2013Observed: 589.31 ft at 6:00PM May 21, 2013Observed: 589.31 ft at 6:30PM May 21, 2013Observed: 589.3 ft at 7:00PM May 21, 2013Observed: 589.3 ft at 7:30PM May 21, 2013Observed: 589.3 ft at 8:00PM May 21, 2013Observed: 589.3 ft at 8:30PM May 21, 2013Observed: 589.29 ft at 9:00PM May 21, 2013Observed: 589.29 ft at 9:30PM May 21, 2013Observed: 589.29 ft at 10:00PM May 21, 2013Observed: 589.29 ft at 10:30PM May 21, 2013Observed: 589.29 ft at 11:00PM May 21, 2013Observed: 589.29 ft at 11:30PM May 21, 2013Observed: 589.28 ft at 12:00AM May 22, 2013Observed: 589.28 ft at 12:30AM May 22, 2013Observed: 589.28 ft at 1:00AM May 22, 2013Observed: 589.28 ft at 1:30AM May 22, 2013Observed: 589.28 ft at 2:00AM May 22, 2013Observed: 589.28 ft at 2:30AM May 22, 2013Observed: 589.28 ft at 3:00AM May 22, 2013Forecast: 589.3 ft 8:00AM May 22, 2013Forecast: 589.4 ft 2:00PM May 22, 2013Forecast: 589.4 ft 8:00PM May 22, 2013Highest Forecast: 589.5 ft 2:00AM May 23, 2013Highest Forecast: 589.5 ft 8:00AM May 23, 2013Highest Forecast: 589.5 ft 2:00PM May 23, 2013Highest Forecast: 589.5 ft 8:00PM May 23, 2013Highest Forecast: 589.5 ft 2:00AM May 24, 2013Forecast: 589.4 ft 8:00AM May 24, 2013MMDN6(plotting HPIRG) Graph Created (3:31AM May 22, 2013)ObservedForecast (issued 11:10AM May 21)Latest observed value: 589.28 ft at 3:00 AM EDT 22-May-2013. Flood Stage is 760 ft
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About this graph
Tabular Data
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Genesee River at Mount Morris Dam are issued routinely year-round.
Return to Area Map
Upstream Gauge - at Portageville Upstream Gauge Downstream Gauge Downstream Gauge - at Avon
Flood Categories (in feet)
Major Flood Stage:760
Moderate Flood Stage:760
Flood Stage:760
Action Stage:720

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


Low Water Records
(1) 575.00 ft on 09/01/1998
(2) 584.00 ft on 08/15/1996
Legend
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 Collapse
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 Collapse

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  

Other Data Sources:
Additional Information Collapse
Observations courtesy of the U.S. Army Corps Engineers.
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Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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
Buffalo Weather Forecast Office
587 Aero Drive
Buffalo, NY 14225-1405
(716) 565-0204
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Page last modified: 13-Mar-2013 6:34 PM 		Disclaimer
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