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Hydrograph River at a Glance Download
Genesee River at Mount Morris Dam Pool (ft)Observed: 632.12 ft at 11:30PM Mar 18, 2023Observed: 632.18 ft at 12:00AM Mar 19, 2023Observed: 632.22 ft at 12:30AM Mar 19, 2023Observed: 632.26 ft at 1:00AM Mar 19, 2023Observed: 632.31 ft at 1:30AM Mar 19, 2023Observed: 632.35 ft at 2:00AM Mar 19, 2023Observed: 632.39 ft at 2:30AM Mar 19, 2023Observed: 632.43 ft at 3:00AM Mar 19, 2023Observed: 632.44 ft at 3:30AM Mar 19, 2023Observed: 632.48 ft at 4:00AM Mar 19, 2023Observed: 632.51 ft at 4:30AM Mar 19, 2023Observed: 632.53 ft at 5:00AM Mar 19, 2023Observed: 632.56 ft at 5:30AM Mar 19, 2023Observed: 632.58 ft at 6:00AM Mar 19, 2023Observed: 632.59 ft at 6:30AM Mar 19, 2023Observed: 632.6 ft at 7:00AM Mar 19, 2023Observed: 632.62 ft at 7:30AM Mar 19, 2023Observed: 632.63 ft at 8:00AM Mar 19, 2023Observed: 632.63 ft at 8:30AM Mar 19, 2023Observed: 632.65 ft at 9:00AM Mar 19, 2023Observed: 632.65 ft at 9:30AM Mar 19, 2023Observed: 632.68 ft at 10:00AM Mar 19, 2023Observed: 632.66 ft at 10:30AM Mar 19, 2023Highest Observation: 632.69 ft at 11:00AM Mar 19, 2023Observed: 632.67 ft at 11:30AM Mar 19, 2023Observed: 632.68 ft at 12:00PM Mar 19, 2023Observed: 632.66 ft at 12:30PM Mar 19, 2023Observed: 632.65 ft at 1:00PM Mar 19, 2023Observed: 632.64 ft at 1:30PM Mar 19, 2023Observed: 632.64 ft at 2:00PM Mar 19, 2023Observed: 632.63 ft at 2:30PM Mar 19, 2023Observed: 632.59 ft at 3:00PM Mar 19, 2023Observed: 632.59 ft at 3:30PM Mar 19, 2023Observed: 632.59 ft at 4:00PM Mar 19, 2023Observed: 632.57 ft at 4:30PM Mar 19, 2023Observed: 632.56 ft at 5:00PM Mar 19, 2023Observed: 632.53 ft at 5:30PM Mar 19, 2023Observed: 632.52 ft at 6:00PM Mar 19, 2023Observed: 632.49 ft at 6:30PM Mar 19, 2023Observed: 632.48 ft at 7:00PM Mar 19, 2023Observed: 632.46 ft at 7:30PM Mar 19, 2023Observed: 632.43 ft at 8:00PM Mar 19, 2023Observed: 632.41 ft at 8:30PM Mar 19, 2023Observed: 632.4 ft at 9:00PM Mar 19, 2023Observed: 632.36 ft at 9:30PM Mar 19, 2023Observed: 632.34 ft at 10:00PM Mar 19, 2023Observed: 632.34 ft at 10:30PM Mar 19, 2023Observed: 632.31 ft at 11:00PM Mar 19, 2023Observed: 632.28 ft at 11:30PM Mar 19, 2023Observed: 632.27 ft at 12:00AM Mar 20, 2023Observed: 632.22 ft at 12:30AM Mar 20, 2023Observed: 632.2 ft at 1:00AM Mar 20, 2023Observed: 632.19 ft at 1:30AM Mar 20, 2023Observed: 632.16 ft at 2:00AM Mar 20, 2023Observed: 632.15 ft at 2:30AM Mar 20, 2023Observed: 632.13 ft at 3:00AM Mar 20, 2023Observed: 632.08 ft at 3:30AM Mar 20, 2023Observed: 632.06 ft at 4:00AM Mar 20, 2023Observed: 632.02 ft at 4:30AM Mar 20, 2023Observed: 632 ft at 5:00AM Mar 20, 2023Observed: 631.96 ft at 5:30AM Mar 20, 2023Observed: 631.93 ft at 6:00AM Mar 20, 2023Observed: 631.89 ft at 6:30AM Mar 20, 2023Observed: 631.86 ft at 7:00AM Mar 20, 2023Observed: 631.82 ft at 7:30AM Mar 20, 2023Observed: 631.79 ft at 8:00AM Mar 20, 2023Observed: 631.75 ft at 8:30AM Mar 20, 2023Observed: 631.64 ft at 9:00AM Mar 20, 2023Observed: 631.63 ft at 9:30AM Mar 20, 2023Observed: 631.56 ft at 10:00AM Mar 20, 2023Observed: 631.49 ft at 10:30AM Mar 20, 2023Observed: 631.43 ft at 11:00AM Mar 20, 2023Observed: 631.37 ft at 11:30AM Mar 20, 2023Observed: 631.32 ft at 12:00PM Mar 20, 2023Observed: 631.24 ft at 12:30PM Mar 20, 2023Observed: 631.18 ft at 1:00PM Mar 20, 2023Observed: 631.12 ft at 1:30PM Mar 20, 2023Observed: 631.01 ft at 2:00PM Mar 20, 2023Observed: 630.92 ft at 2:30PM Mar 20, 2023Observed: 630.8 ft at 3:00PM Mar 20, 2023Observed: 630.7 ft at 3:30PM Mar 20, 2023Observed: 630.61 ft at 4:00PM Mar 20, 2023Observed: 630.51 ft at 4:30PM Mar 20, 2023Observed: 630.43 ft at 5:00PM Mar 20, 2023Observed: 630.31 ft at 5:30PM Mar 20, 2023Observed: 630.21 ft at 6:00PM Mar 20, 2023Observed: 630.11 ft at 6:30PM Mar 20, 2023Observed: 630 ft at 7:00PM Mar 20, 2023Observed: 629.9 ft at 7:30PM Mar 20, 2023Observed: 629.8 ft at 8:00PM Mar 20, 2023Observed: 629.69 ft at 8:30PM Mar 20, 2023Observed: 629.59 ft at 9:00PM Mar 20, 2023Observed: 629.49 ft at 9:30PM Mar 20, 2023Observed: 629.39 ft at 10:00PM Mar 20, 2023Observed: 629.29 ft at 10:30PM Mar 20, 2023Observed: 629.19 ft at 11:00PM Mar 20, 2023Observed: 629.09 ft at 11:30PM Mar 20, 2023Observed: 628.99 ft at 12:00AM Mar 21, 2023Observed: 628.88 ft at 12:30AM Mar 21, 2023Observed: 628.78 ft at 1:00AM Mar 21, 2023Observed: 628.68 ft at 1:30AM Mar 21, 2023Observed: 628.57 ft at 2:00AM Mar 21, 2023Observed: 628.49 ft at 2:30AM Mar 21, 2023Observed: 628.38 ft at 3:00AM Mar 21, 2023Observed: 628.28 ft at 3:30AM Mar 21, 2023Observed: 628.18 ft at 4:00AM Mar 21, 2023Observed: 628.08 ft at 4:30AM Mar 21, 2023Observed: 627.98 ft at 5:00AM Mar 21, 2023Observed: 627.89 ft at 5:30AM Mar 21, 2023Observed: 627.79 ft at 6:00AM Mar 21, 2023Observed: 627.69 ft at 6:30AM Mar 21, 2023Observed: 627.58 ft at 7:00AM Mar 21, 2023Observed: 627.48 ft at 7:30AM Mar 21, 2023Observed: 627.38 ft at 8:00AM Mar 21, 2023Observed: 627.27 ft at 8:30AM Mar 21, 2023Observed: 627.17 ft at 9:00AM Mar 21, 2023Observed: 627.06 ft at 9:30AM Mar 21, 2023Observed: 626.96 ft at 10:00AM Mar 21, 2023Observed: 626.86 ft at 10:30AM Mar 21, 2023Observed: 626.74 ft at 11:00AM Mar 21, 2023Observed: 626.63 ft at 11:30AM Mar 21, 2023Observed: 626.52 ft at 12:00PM Mar 21, 2023Observed: 626.44 ft at 12:30PM Mar 21, 2023Observed: 626.32 ft at 1:00PM Mar 21, 2023Observed: 626.21 ft at 1:30PM Mar 21, 2023Observed: 626.09 ft at 2:00PM Mar 21, 2023Observed: 625.99 ft at 2:30PM Mar 21, 2023Observed: 625.88 ft at 3:00PM Mar 21, 2023Observed: 625.76 ft at 3:30PM Mar 21, 2023Observed: 625.64 ft at 4:00PM Mar 21, 2023Observed: 625.52 ft at 4:30PM Mar 21, 2023Observed: 625.39 ft at 5:00PM Mar 21, 2023Observed: 625.28 ft at 5:30PM Mar 21, 2023Observed: 625.16 ft at 6:00PM Mar 21, 2023Observed: 625.04 ft at 6:30PM Mar 21, 2023Observed: 624.92 ft at 7:00PM Mar 21, 2023Observed: 624.81 ft at 7:30PM Mar 21, 2023Observed: 624.68 ft at 8:00PM Mar 21, 2023Observed: 624.56 ft at 8:30PM Mar 21, 2023Observed: 624.44 ft at 9:00PM Mar 21, 2023Observed: 624.32 ft at 9:30PM Mar 21, 2023Observed: 624.2 ft at 10:00PM Mar 21, 2023Highest Forecast: 623.4 ft 2:00AM Mar 22, 2023Forecast: 622.4 ft 8:00AM Mar 22, 2023Forecast: 621.7 ft 2:00PM Mar 22, 2023Forecast: 621.2 ft 8:00PM Mar 22, 2023Forecast: 620.6 ft 2:00AM Mar 23, 2023Forecast: 620 ft 8:00AM Mar 23, 2023Forecast: 619.4 ft 2:00PM Mar 23, 2023Forecast: 619.4 ft 8:00PM Mar 23, 2023Forecast: 620.3 ft 2:00AM Mar 24, 2023Forecast: 622.3 ft 8:00AM Mar 24, 2023MMDN6(plotting HPIRG) Graph Created (11:16PM Mar 21, 2023)ObservedForecast (issued 11:19AM Mar 21)Latest observed value: 624.2 ft at 10:00 PM EDT 21-Mar-2023. Flood Stage is 760 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Stage may be affected by ice during winter months.

NOTE: 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
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
KML Image
Gauge LocationGauge Map Marker
 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
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 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  

Current/Historical Observations:
Additional Information Collapse
Observations courtesy of the U.S. Army Corps Engineers.
Resources Collapse
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
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Buffalo, NY 14225-1405
(716) 565-0204
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