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Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Genesee River at Mount Morris Dam Observed crest: 592.24 ft at 5:30am Feb 07 Observed: 600.17 ft at 8:30am Feb 3 Observed: 597.4 ft at 9:00am Feb 3 Observed: 595.51 ft at 9:30am Feb 3 Observed: 594.2 ft at 10:00am Feb 3 Observed: 593.08 ft at 10:30am Feb 3 Observed: 592.25 ft at 11:00am Feb 3 Observed: 592.06 ft at 11:30am Feb 3 Observed: 591.84 ft at 12:00pm Feb 3 Observed: 591.86 ft at 12:30pm Feb 3 Observed: 592.04 ft at 1:00pm Feb 3 Observed: 592.12 ft at 1:30pm Feb 3 Observed: 592.15 ft at 2:00pm Feb 3 Observed: 592.2 ft at 2:30pm Feb 3 Observed: 592.97 ft at 3:00pm Feb 3 Observed: 593.79 ft at 3:30pm Feb 3 Observed: 593.85 ft at 4:00pm Feb 3 Observed: 593.85 ft at 4:30pm Feb 3 Observed: 593.83 ft at 5:00pm Feb 3 Observed: 593.79 ft at 5:30pm Feb 3 Observed: 593.74 ft at 6:00pm Feb 3 Observed: 593.72 ft at 6:30pm Feb 3 Observed: 593.72 ft at 7:00pm Feb 3 Observed: 593.71 ft at 7:30pm Feb 3 Observed: 593.7 ft at 8:00pm Feb 3 Observed: 593.7 ft at 8:30pm Feb 3 Observed: 593.69 ft at 9:00pm Feb 3 Observed: 593.66 ft at 9:30pm Feb 3 Observed: 593.61 ft at 10:00pm Feb 3 Observed: 593.52 ft at 10:30pm Feb 3 Observed: 593.41 ft at 11:00pm Feb 3 Observed: 593.3 ft at 11:30pm Feb 3 Observed: 593.2 ft at 12:00am Feb 4 Observed: 593.14 ft at 12:30am Feb 4 Observed: 593.11 ft at 1:00am Feb 4 Observed: 593.12 ft at 1:30am Feb 4 Observed: 593.08 ft at 2:00am Feb 4 Observed: 593.08 ft at 2:30am Feb 4 Observed: 593.09 ft at 3:00am Feb 4 Observed: 593.1 ft at 3:30am Feb 4 Observed: 593.12 ft at 4:00am Feb 4 Observed: 593.15 ft at 4:30am Feb 4 Observed: 593.17 ft at 5:00am Feb 4 Observed: 593.17 ft at 5:30am Feb 4 Observed: 593.18 ft at 6:00am Feb 4 Observed: 593.17 ft at 6:30am Feb 4 Observed: 593.13 ft at 7:00am Feb 4 Observed: 593.09 ft at 7:30am Feb 4 Observed: 593.07 ft at 8:00am Feb 4 Observed: 593.05 ft at 8:30am Feb 4 Observed: 593.03 ft at 9:00am Feb 4 Observed: 593.01 ft at 9:30am Feb 4 Observed: 592.99 ft at 10:00am Feb 4 Observed: 592.96 ft at 10:30am Feb 4 Observed: 592.92 ft at 11:00am Feb 4 Observed: 592.88 ft at 11:30am Feb 4 Observed: 592.86 ft at 12:00pm Feb 4 Observed: 592.83 ft at 12:30pm Feb 4 Observed: 592.82 ft at 1:00pm Feb 4 Observed: 592.82 ft at 1:30pm Feb 4 Observed: 592.82 ft at 2:00pm Feb 4 Observed: 592.84 ft at 2:30pm Feb 4 Observed: 592.85 ft at 3:00pm Feb 4 Observed: 592.86 ft at 3:30pm Feb 4 Observed: 592.89 ft at 4:00pm Feb 4 Observed: 592.93 ft at 4:30pm Feb 4 Observed: 592.94 ft at 5:00pm Feb 4 Observed: 592.96 ft at 5:30pm Feb 4 Observed: 592.97 ft at 6:00pm Feb 4 Observed: 593.01 ft at 6:30pm Feb 4 Observed: 593.04 ft at 7:00pm Feb 4 Observed: 593.07 ft at 7:30pm Feb 4 Observed: 593.1 ft at 8:00pm Feb 4 Observed: 593.12 ft at 8:30pm Feb 4 Observed: 593.15 ft at 9:00pm Feb 4 Observed: 593.16 ft at 9:30pm Feb 4 Observed: 593.17 ft at 10:00pm Feb 4 Observed: 593.18 ft at 10:30pm Feb 4 Observed: 593.18 ft at 11:00pm Feb 4 Observed: 593.18 ft at 11:30pm Feb 4 Observed: 593.18 ft at 12:00am Feb 5 Observed: 593.17 ft at 12:30am Feb 5 Observed: 593.13 ft at 1:00am Feb 5 Observed: 593.09 ft at 1:30am Feb 5 Observed: 593.05 ft at 2:00am Feb 5 Observed: 593.02 ft at 2:30am Feb 5 Observed: 592.98 ft at 3:00am Feb 5 Observed: 592.95 ft at 3:30am Feb 5 Observed: 592.92 ft at 4:00am Feb 5 Observed: 592.9 ft at 4:30am Feb 5 Observed: 592.88 ft at 5:00am Feb 5 Observed: 592.84 ft at 5:30am Feb 5 Observed: 592.81 ft at 6:00am Feb 5 Observed: 592.78 ft at 6:30am Feb 5 Observed: 592.79 ft at 7:00am Feb 5 Observed: 592.78 ft at 7:30am Feb 5 Observed: 592.76 ft at 8:00am Feb 5 Observed: 592.74 ft at 8:30am Feb 5 Observed: 592.72 ft at 9:00am Feb 5 Observed: 592.7 ft at 9:30am Feb 5 Observed: 592.68 ft at 10:00am Feb 5 Observed: 592.65 ft at 10:30am Feb 5 Observed: 592.63 ft at 11:00am Feb 5 Observed: 592.62 ft at 11:30am Feb 5 Observed: 592.61 ft at 12:00pm Feb 5 Observed: 592.58 ft at 12:30pm Feb 5 Observed: 592.57 ft at 1:00pm Feb 5 Observed: 592.54 ft at 1:30pm Feb 5 Observed: 592.51 ft at 2:00pm Feb 5 Observed: 592.48 ft at 2:30pm Feb 5 Observed: 592.44 ft at 3:00pm Feb 5 Observed: 592.41 ft at 3:30pm Feb 5 Observed: 592.38 ft at 4:00pm Feb 5 Observed: 592.31 ft at 4:30pm Feb 5 Observed: 592.23 ft at 5:00pm Feb 5 Observed: 592.22 ft at 5:30pm Feb 5 Observed: 592.24 ft at 6:00pm Feb 5 Observed: 592.28 ft at 6:30pm Feb 5 Observed: 592.36 ft at 7:00pm Feb 5 Observed: 592.43 ft at 7:30pm Feb 5 Observed: 592.49 ft at 8:00pm Feb 5 Observed: 592.53 ft at 8:30pm Feb 5 Observed: 592.57 ft at 9:00pm Feb 5 Observed: 592.6 ft at 9:30pm Feb 5 Observed: 592.63 ft at 10:00pm Feb 5 Observed: 592.64 ft at 10:30pm Feb 5 Observed: 592.64 ft at 11:00pm Feb 5 Observed: 592.63 ft at 11:30pm Feb 5 Observed: 592.62 ft at 12:00am Feb 6 Observed: 592.59 ft at 12:30am Feb 6 Observed: 592.56 ft at 1:00am Feb 6 Observed: 592.52 ft at 1:30am Feb 6 Observed: 592.46 ft at 2:00am Feb 6 Observed: 592.41 ft at 2:30am Feb 6 Observed: 592.37 ft at 3:00am Feb 6 Observed: 592.35 ft at 3:30am Feb 6 Observed: 592.25 ft at 4:00am Feb 6 Observed: 592.13 ft at 4:30am Feb 6 Observed: 591.75 ft at 5:00am Feb 6 Observed: 591.43 ft at 5:30am Feb 6 Observed: 591.29 ft at 6:00am Feb 6 Observed: 591.29 ft at 6:30am Feb 6 Observed: 591.35 ft at 7:00am Feb 6 Observed: 591.43 ft at 7:30am Feb 6 Observed: 591.51 ft at 8:00am Feb 6 Observed: 591.58 ft at 8:30am Feb 6 Observed: 591.62 ft at 9:00am Feb 6 Observed: 591.65 ft at 9:30am Feb 6 Observed: 591.67 ft at 10:00am Feb 6 Observed: 591.67 ft at 10:30am Feb 6 Observed: 591.67 ft at 11:00am Feb 6 Observed: 591.67 ft at 11:30am Feb 6 Observed: 591.65 ft at 12:00pm Feb 6 Observed: 591.63 ft at 12:30pm Feb 6 Observed: 591.6 ft at 1:00pm Feb 6 Observed: 591.58 ft at 1:30pm Feb 6 Observed: 591.57 ft at 2:00pm Feb 6 Observed: 591.56 ft at 2:30pm Feb 6 Observed: 591.55 ft at 3:00pm Feb 6 Observed: 591.52 ft at 3:30pm Feb 6 Observed: 591.48 ft at 4:00pm Feb 6 Observed: 591.44 ft at 4:30pm Feb 6 Observed: 591.4 ft at 5:00pm Feb 6 Observed: 591.37 ft at 5:30pm Feb 6 Observed: 591.35 ft at 6:00pm Feb 6 Observed: 591.33 ft at 6:30pm Feb 6 Observed: 591.29 ft at 7:00pm Feb 6 Observed: 591.25 ft at 7:30pm Feb 6 Observed: 591.22 ft at 8:00pm Feb 6 Observed: 591.22 ft at 8:30pm Feb 6 Observed: 591.24 ft at 9:00pm Feb 6 Observed: 591.27 ft at 9:30pm Feb 6 Observed: 591.39 ft at 10:00pm Feb 6 Observed: 591.45 ft at 10:30pm Feb 6 Observed: 591.41 ft at 11:00pm Feb 6 Observed: 591.38 ft at 11:30pm Feb 6 Observed: 591.41 ft at 12:00am Feb 7 Observed: 591.48 ft at 12:30am Feb 7 Observed: 591.57 ft at 1:00am Feb 7 Observed: 591.66 ft at 1:30am Feb 7 Observed: 591.74 ft at 2:00am Feb 7 Observed: 591.8 ft at 2:30am Feb 7 Observed: 591.84 ft at 3:00am Feb 7 Observed: 591.86 ft at 3:30am Feb 7 Observed: 591.86 ft at 4:00am Feb 7 Observed: 591.83 ft at 4:30am Feb 7 Observed: 591.95 ft at 5:00am Feb 7 Observed: 592.24 ft at 5:30am Feb 7 Observed: 592.19 ft at 6:00am Feb 7 Observed: 591.94 ft at 6:30am Feb 7 Observed: 591.7 ft at 7:00am Feb 7 Observed: 591.52 ft at 7:30am Feb 7 Observed: 591.39 ft at 8:00am Feb 7 Observed: 591.29 ft at 8:30am Feb 7 Observed: 591.22 ft at 9:00am Feb 7 Observed: 591.14 ft at 9:30am Feb 7 Observed: 591.08 ft at 10:00am Feb 7 Observed: 591.02 ft at 10:30am Feb 7 Observed: 590.96 ft at 11:00am Feb 7 Observed: 590.91 ft at 11:30am Feb 7 Observed: 590.89 ft at 12:00pm Feb 7 Observed: 590.89 ft at 12:30pm Feb 7 Observed: 590.89 ft at 1:00pm Feb 7 Observed: 590.89 ft at 1:30pm Feb 7 Observed: 590.89 ft at 2:00pm Feb 7 Observed: 590.9 ft at 2:30pm Feb 7 Observed: 590.91 ft at 3:00pm Feb 7 Observed: 590.9 ft at 3:30pm Feb 7 Observed: 590.89 ft at 4:00pm Feb 7 Observed: 590.97 ft at 4:30pm Feb 7 Observed: 591.11 ft at 5:00pm Feb 7 Observed: 591.18 ft at 5:30pm Feb 7 Observed: 591.19 ft at 6:00pm Feb 7 Observed: 591.17 ft at 6:30pm Feb 7 Observed: 591.16 ft at 7:00pm Feb 7 Observed: 591.13 ft at 7:30pm Feb 7 Observed: 591.09 ft at 8:00pm Feb 7 Observed: 591.05 ft at 8:30pm Feb 7 Observed: 591.01 ft at 9:00pm Feb 7 Observed: 590.98 ft at 9:30pm Feb 7 Observed: 590.99 ft at 10:00pm Feb 7 Observed: 591.08 ft at 10:30pm Feb 7 Observed: 591.21 ft at 11:00pm Feb 7 Observed: 591.29 ft at 11:30pm Feb 7 Observed: 591.33 ft at 12:00am Feb 8 Observed: 591.34 ft at 12:30am Feb 8 Observed: 591.34 ft at 1:00am Feb 8 Observed: 591.34 ft at 1:30am Feb 8 Observed: 591.34 ft at 2:00am Feb 8 Observed: 591.33 ft at 2:30am Feb 8 Observed: 591.33 ft at 3:00am Feb 8 Observed: 591.33 ft at 3:30am Feb 8 Observed: 591.33 ft at 4:00am Feb 8 Observed: 591.32 ft at 4:30am Feb 8 Observed: 591.32 ft at 5:00am Feb 8 Observed: 591.32 ft at 5:30am Feb 8 Observed: 591.31 ft at 6:00am Feb 8 Observed: 591.31 ft at 6:30am Feb 8 Observed: 591.3 ft at 7:00am Feb 8 Observed: 591.28 ft at 7:30am Feb 8 Observed: 591.23 ft at 8:00am Feb 8 Observed: 591.17 ft at 8:30am Feb 8 Observed: 591.11 ft at 9:00am Feb 8 Observed: 591.04 ft at 9:30am Feb 8 Observed: 590.97 ft at 10:00am Feb 8 Observed: 590.89 ft at 10:30am Feb 8 Observed: 590.8 ft at 11:00am Feb 8 Observed: 590.72 ft at 11:30am Feb 8 Observed: 590.63 ft at 12:00pm Feb 8 Observed: 590.55 ft at 12:30pm Feb 8 Observed: 590.48 ft at 1:00pm Feb 8 Observed: 590.4 ft at 1:30pm Feb 8 Observed: 590.33 ft at 2:00pm Feb 8 Observed: 590.25 ft at 2:30pm Feb 8 Observed: 590.18 ft at 3:00pm Feb 8 Observed: 590.12 ft at 3:30pm Feb 8 Observed: 590.06 ft at 4:00pm Feb 8 Observed: 590.01 ft at 4:30pm Feb 8 Observed: 589.95 ft at 5:00pm Feb 8 Observed: 589.9 ft at 5:30pm Feb 8 Observed: 589.86 ft at 6:00pm Feb 8 Observed: 589.82 ft at 6:30pm Feb 8 Observed: 589.78 ft at 7:00pm Feb 8 Observed: 589.75 ft at 7:30pm Feb 8 Observed: 589.73 ft at 8:00pm Feb 8 Observed: 589.7 ft at 8:30pm Feb 8 Observed: 589.69 ft at 9:00pm Feb 8 Observed: 589.68 ft at 9:30pm Feb 8 Observed: 589.67 ft at 10:00pm Feb 8 Observed: 589.67 ft at 10:30pm Feb 8 Observed: 589.67 ft at 11:00pm Feb 8 Observed: 589.69 ft at 11:30pm Feb 8 Observed: 589.74 ft at 12:00am Feb 9 Observed: 589.81 ft at 12:30am Feb 9 Observed: 589.89 ft at 1:00am Feb 9 Observed: 589.97 ft at 1:30am Feb 9 Observed: 590.05 ft at 2:00am Feb 9 Observed: 590.12 ft at 2:30am Feb 9 Observed: 590.19 ft at 3:00am Feb 9 Observed: 590.24 ft at 3:30am Feb 9 Observed: 590.28 ft at 4:00am Feb 9 Observed: 590.3 ft at 4:30am Feb 9 Observed: 590.32 ft at 5:00am Feb 9 Observed: 590.32 ft at 5:30am Feb 9 Observed: 590.32 ft at 6:00am Feb 9 Observed: 590.32 ft at 6:30am Feb 9 Observed: 590.31 ft at 7:00am Feb 9 Observed: 590.31 ft at 7:30am Feb 9 Observed: 590.3 ft at 8:00am Feb 9 Observed: 590.29 ft at 8:30am Feb 9 Observed: 590.28 ft at 9:00am Feb 9 Observed: 590.27 ft at 9:30am Feb 9 Observed: 590.26 ft at 10:00am Feb 9 Observed: 590.25 ft at 10:30am Feb 9 Observed: 590.24 ft at 11:00am Feb 9 Observed: 590.23 ft at 11:30am Feb 9 Observed: 590.22 ft at 12:00pm Feb 9 Observed: 590.2 ft at 12:30pm Feb 9 Observed: 590.18 ft at 1:00pm Feb 9 Observed: 590.17 ft at 1:30pm Feb 9 Observed: 590.14 ft at 2:00pm Feb 9 Observed: 590.12 ft at 2:30pm Feb 9 Observed: 590.09 ft at 3:00pm Feb 9 Observed: 590.05 ft at 3:30pm Feb 9 Observed: 590.03 ft at 4:00pm Feb 9 Observed: 590 ft at 4:30pm Feb 9 Observed: 589.97 ft at 5:00pm Feb 9 Observed: 589.95 ft at 5:30pm Feb 9 Observed: 589.92 ft at 6:00pm Feb 9 Observed: 589.9 ft at 6:30pm Feb 9 Observed: 589.88 ft at 7:00pm Feb 9 Observed: 589.86 ft at 7:30pm Feb 9 Observed: 589.84 ft at 8:00pm Feb 9 Observed: 589.83 ft at 8:30pm Feb 9 Observed: 589.82 ft at 9:00pm Feb 9 Observed: 589.81 ft at 9:30pm Feb 9 Observed: 589.81 ft at 10:00pm Feb 9 Forecast: 589.7 ft at 1:00pm Feb 9 Forecast: 589.6 ft at 7:00pm Feb 9 Forecast: 589.5 ft at 1:00am Feb 10 Forecast: 589.3 ft at 7:00am Feb 10 Forecast: 589.2 ft at 1:00pm Feb 10 Forecast: 589.1 ft at 7:00pm Feb 10 Forecast: 589.1 ft at 1:00am Feb 11 Forecast: 589 ft at 7:00am Feb 11 Forecast: 588.9 ft at 1:00pm Feb 11 Graph Created (10:47pm Feb 9, 2010) Observed Forecast (issued 10:43am Feb 9) USGS--Water Resources of the United States MMDN6 (plotting HPIRG) Gage 0 Datum: n/a Latest observed value: 589.81 ft at 10:00 PM EST 9-Feb-2010. Flood Stage is 760.0 ft. Pool (ft)
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Tabular Data
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Metadata
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

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

Low Water Records
(1) 575.0 ft on 09/01/1998
(2) 584.0 ft on 08/15/1996

 Genesee River at Mount Morris Dam location map

Flood Impacts Collapse
760.0 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.
720.0 ACTION-ALERT STAGE. POOL SIGNIFICANTLY FULL. INCREASE MONITORING.
600.0 CONSERVATION POOL...JUNE 15 TO NOVEMBER 1...MAINTAINED AS CLOSE TO THIS LEVEL AS POSSIBLE.
584.0 POOL ELEVATION. TYPICAL LOW LEVEL-UNCONTROLLED.
575.0 RIVER BED ELEVATION.

About This Location Collapse
Latitude: 42.733000° N, Longitude: 77.907500° W, Horizontal Datum: NAD83

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 N/A N/A Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 N/A N/A Older USGS topographic maps, NGVD29 benchmarks
MSL N/A N/A Older USGS topographic maps, MSL benchmarks
Other 0 ft 760 ft  

Other Data Sources:
Corps of Engineers (COE) Info for Mount Morris Dam
U.S. Geological Survey (USGS) Data and Site Info for Mount Morris Dam

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
Buffalo Weather Forecast Office
587 Aero Drive
Buffalo, NY 14225-1405
(716) 565-0204
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