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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 Portageville Stage (ft)Flow (kcfs)Highest Observation: 9.83 ft at 7:00AM Jun 16, 2013Highest Observation: 9.83 ft at 7:15AM Jun 16, 2013Highest Observation: 9.83 ft at 7:30AM Jun 16, 2013Highest Observation: 9.83 ft at 7:45AM Jun 16, 2013Observed: 9.81 ft at 8:00AM Jun 16, 2013Observed: 9.79 ft at 9:15AM Jun 16, 2013Observed: 9.79 ft at 9:30AM Jun 16, 2013Observed: 9.79 ft at 9:45AM Jun 16, 2013Observed: 9.79 ft at 10:00AM Jun 16, 2013Observed: 9.77 ft at 10:15AM Jun 16, 2013Observed: 9.77 ft at 10:30AM Jun 16, 2013Observed: 9.76 ft at 10:45AM Jun 16, 2013Observed: 9.77 ft at 11:00AM Jun 16, 2013Observed: 9.76 ft at 11:15AM Jun 16, 2013Observed: 9.76 ft at 11:30AM Jun 16, 2013Observed: 9.76 ft at 11:45AM Jun 16, 2013Observed: 9.75 ft at 12:00PM Jun 16, 2013Observed: 9.75 ft at 12:15PM Jun 16, 2013Observed: 9.75 ft at 12:30PM Jun 16, 2013Observed: 9.75 ft at 12:45PM Jun 16, 2013Observed: 9.75 ft at 1:00PM Jun 16, 2013Observed: 9.74 ft at 1:15PM Jun 16, 2013Observed: 9.75 ft at 1:30PM Jun 16, 2013Observed: 9.73 ft at 1:45PM Jun 16, 2013Observed: 9.74 ft at 2:00PM Jun 16, 2013Observed: 9.73 ft at 2:15PM Jun 16, 2013Observed: 9.72 ft at 2:30PM Jun 16, 2013Observed: 9.71 ft at 2:45PM Jun 16, 2013Observed: 9.73 ft at 3:00PM Jun 16, 2013Observed: 9.71 ft at 3:15PM Jun 16, 2013Observed: 9.7 ft at 3:30PM Jun 16, 2013Observed: 9.7 ft at 3:45PM Jun 16, 2013Observed: 9.71 ft at 4:00PM Jun 16, 2013Observed: 9.69 ft at 4:15PM Jun 16, 2013Observed: 9.7 ft at 4:30PM Jun 16, 2013Observed: 9.7 ft at 4:45PM Jun 16, 2013Observed: 9.71 ft at 5:00PM Jun 16, 2013Observed: 9.69 ft at 5:15PM Jun 16, 2013Observed: 9.69 ft at 5:30PM Jun 16, 2013Observed: 9.7 ft at 5:45PM Jun 16, 2013Observed: 9.69 ft at 6:00PM Jun 16, 2013Observed: 9.69 ft at 6:15PM Jun 16, 2013Observed: 9.68 ft at 6:30PM Jun 16, 2013Observed: 9.69 ft at 6:45PM Jun 16, 2013Observed: 9.67 ft at 7:00PM Jun 16, 2013Observed: 9.67 ft at 7:15PM Jun 16, 2013Observed: 9.69 ft at 7:30PM Jun 16, 2013Observed: 9.68 ft at 7:45PM Jun 16, 2013Observed: 9.69 ft at 8:00PM Jun 16, 2013Observed: 9.68 ft at 8:15PM Jun 16, 2013Observed: 9.68 ft at 8:30PM Jun 16, 2013Observed: 9.67 ft at 8:45PM Jun 16, 2013Observed: 9.67 ft at 9:00PM Jun 16, 2013Observed: 9.67 ft at 9:15PM Jun 16, 2013Observed: 9.67 ft at 9:30PM Jun 16, 2013Observed: 9.67 ft at 9:45PM Jun 16, 2013Observed: 9.67 ft at 10:00PM Jun 16, 2013Observed: 9.67 ft at 10:15PM Jun 16, 2013Observed: 9.67 ft at 10:30PM Jun 16, 2013Observed: 9.66 ft at 10:45PM Jun 16, 2013Observed: 9.67 ft at 11:00PM Jun 16, 2013Observed: 9.67 ft at 11:15PM Jun 16, 2013Observed: 9.65 ft at 11:30PM Jun 16, 2013Observed: 9.66 ft at 11:45PM Jun 16, 2013Observed: 9.66 ft at 12:00AM Jun 17, 2013Observed: 9.66 ft at 1:15AM Jun 17, 2013Observed: 9.65 ft at 1:30AM Jun 17, 2013Observed: 9.67 ft at 1:45AM Jun 17, 2013Observed: 9.65 ft at 2:00AM Jun 17, 2013Observed: 9.66 ft at 2:15AM Jun 17, 2013Observed: 9.67 ft at 2:30AM Jun 17, 2013Observed: 9.65 ft at 2:45AM Jun 17, 2013Observed: 9.67 ft at 3:00AM Jun 17, 2013Observed: 9.67 ft at 3:15AM Jun 17, 2013Observed: 9.66 ft at 3:30AM Jun 17, 2013Observed: 9.65 ft at 3:45AM Jun 17, 2013Observed: 9.67 ft at 4:00AM Jun 17, 2013Observed: 9.66 ft at 4:15AM Jun 17, 2013Observed: 9.65 ft at 4:30AM Jun 17, 2013Observed: 9.66 ft at 4:45AM Jun 17, 2013Observed: 9.66 ft at 5:00AM Jun 17, 2013Observed: 9.66 ft at 5:15AM Jun 17, 2013Observed: 9.65 ft at 5:30AM Jun 17, 2013Observed: 9.67 ft at 5:45AM Jun 17, 2013Observed: 9.65 ft at 6:00AM Jun 17, 2013Observed: 9.65 ft at 6:15AM Jun 17, 2013Observed: 9.65 ft at 6:30AM Jun 17, 2013Observed: 9.65 ft at 6:45AM Jun 17, 2013Observed: 9.65 ft at 7:00AM Jun 17, 2013Observed: 9.66 ft at 7:15AM Jun 17, 2013Observed: 9.65 ft at 7:30AM Jun 17, 2013Observed: 9.65 ft at 7:45AM Jun 17, 2013Observed: 9.65 ft at 8:00AM Jun 17, 2013Observed: 9.65 ft at 8:15AM Jun 17, 2013Observed: 9.65 ft at 8:30AM Jun 17, 2013Observed: 9.64 ft at 8:45AM Jun 17, 2013Observed: 9.64 ft at 9:00AM Jun 17, 2013Observed: 9.64 ft at 9:15AM Jun 17, 2013Observed: 9.64 ft at 9:30AM Jun 17, 2013Observed: 9.65 ft at 9:45AM Jun 17, 2013Observed: 9.64 ft at 10:00AM Jun 17, 2013Observed: 9.65 ft at 10:15AM Jun 17, 2013Observed: 9.64 ft at 10:30AM Jun 17, 2013Observed: 9.63 ft at 10:45AM Jun 17, 2013Observed: 9.64 ft at 11:00AM Jun 17, 2013Observed: 9.63 ft at 11:15AM Jun 17, 2013Observed: 9.63 ft at 11:30AM Jun 17, 2013Observed: 9.63 ft at 11:45AM Jun 17, 2013Observed: 9.63 ft at 12:00PM Jun 17, 2013Observed: 9.63 ft at 12:15PM Jun 17, 2013Observed: 9.63 ft at 12:30PM Jun 17, 2013Observed: 9.63 ft at 12:45PM Jun 17, 2013Observed: 9.63 ft at 1:00PM Jun 17, 2013Observed: 9.62 ft at 1:15PM Jun 17, 2013Observed: 9.61 ft at 1:30PM Jun 17, 2013Observed: 9.61 ft at 1:45PM Jun 17, 2013Observed: 9.62 ft at 2:00PM Jun 17, 2013Observed: 9.61 ft at 2:15PM Jun 17, 2013Observed: 9.61 ft at 2:30PM Jun 17, 2013Observed: 9.61 ft at 2:45PM Jun 17, 2013Observed: 9.61 ft at 3:00PM Jun 17, 2013Observed: 9.61 ft at 3:15PM Jun 17, 2013Observed: 9.6 ft at 3:30PM Jun 17, 2013Observed: 9.61 ft at 3:45PM Jun 17, 2013Observed: 9.6 ft at 4:00PM Jun 17, 2013Observed: 9.59 ft at 4:15PM Jun 17, 2013Observed: 9.61 ft at 4:30PM Jun 17, 2013Observed: 9.59 ft at 4:45PM Jun 17, 2013Observed: 9.59 ft at 5:00PM Jun 17, 2013Observed: 9.59 ft at 5:15PM Jun 17, 2013Observed: 9.59 ft at 5:30PM Jun 17, 2013Observed: 9.59 ft at 5:45PM Jun 17, 2013Observed: 9.58 ft at 6:00PM Jun 17, 2013Observed: 9.57 ft at 7:15PM Jun 17, 2013Observed: 9.57 ft at 7:30PM Jun 17, 2013Observed: 9.57 ft at 7:45PM Jun 17, 2013Observed: 9.57 ft at 8:00PM Jun 17, 2013Observed: 9.56 ft at 8:15PM Jun 17, 2013Observed: 9.57 ft at 8:30PM Jun 17, 2013Observed: 9.57 ft at 8:45PM Jun 17, 2013Observed: 9.55 ft at 9:00PM Jun 17, 2013Observed: 9.56 ft at 9:15PM Jun 17, 2013Observed: 9.55 ft at 9:30PM Jun 17, 2013Observed: 9.55 ft at 9:45PM Jun 17, 2013Observed: 9.55 ft at 10:00PM Jun 17, 2013Observed: 9.55 ft at 11:15PM Jun 17, 2013Observed: 9.55 ft at 11:30PM Jun 17, 2013Observed: 9.55 ft at 11:45PM Jun 17, 2013Observed: 9.54 ft at 12:00AM Jun 18, 2013Observed: 9.53 ft at 12:15AM Jun 18, 2013Observed: 9.55 ft at 12:30AM Jun 18, 2013Observed: 9.53 ft at 12:45AM Jun 18, 2013Observed: 9.53 ft at 1:00AM Jun 18, 2013Observed: 9.53 ft at 1:15AM Jun 18, 2013Observed: 9.53 ft at 1:30AM Jun 18, 2013Observed: 9.53 ft at 1:45AM Jun 18, 2013Observed: 9.53 ft at 2:00AM Jun 18, 2013Observed: 9.53 ft at 2:15AM Jun 18, 2013Observed: 9.53 ft at 2:30AM Jun 18, 2013Observed: 9.52 ft at 2:45AM Jun 18, 2013Observed: 9.52 ft at 3:00AM Jun 18, 2013Observed: 9.52 ft at 3:15AM Jun 18, 2013Observed: 9.52 ft at 3:30AM Jun 18, 2013Observed: 9.52 ft at 3:45AM Jun 18, 2013Observed: 9.52 ft at 4:00AM Jun 18, 2013Observed: 9.51 ft at 4:15AM Jun 18, 2013Observed: 9.51 ft at 4:30AM Jun 18, 2013Observed: 9.51 ft at 4:45AM Jun 18, 2013Observed: 9.51 ft at 5:00AM Jun 18, 2013Observed: 9.51 ft at 5:15AM Jun 18, 2013Observed: 9.51 ft at 5:30AM Jun 18, 2013Observed: 9.51 ft at 5:45AM Jun 18, 2013Observed: 9.5 ft at 6:00AM Jun 18, 2013Observed: 9.49 ft at 6:15AM Jun 18, 2013Observed: 9.49 ft at 6:30AM Jun 18, 2013Observed: 9.49 ft at 6:45AM Jun 18, 2013Observed: 9.49 ft at 7:00AM Jun 18, 2013Observed: 9.49 ft at 7:15AM Jun 18, 2013Observed: 9.49 ft at 7:30AM Jun 18, 2013Observed: 9.49 ft at 7:45AM Jun 18, 2013Observed: 9.49 ft at 8:00AM Jun 18, 2013Observed: 9.49 ft at 8:15AM Jun 18, 2013Observed: 9.48 ft at 8:30AM Jun 18, 2013Observed: 9.49 ft at 8:45AM Jun 18, 2013Observed: 9.47 ft at 9:00AM Jun 18, 2013Observed: 9.47 ft at 9:15AM Jun 18, 2013Observed: 9.47 ft at 9:30AM Jun 18, 2013Observed: 9.47 ft at 9:45AM Jun 18, 2013Observed: 9.47 ft at 10:00AM Jun 18, 2013Observed: 9.47 ft at 10:15AM Jun 18, 2013Observed: 9.47 ft at 10:30AM Jun 18, 2013Observed: 9.47 ft at 10:45AM Jun 18, 2013Observed: 9.47 ft at 11:00AM Jun 18, 2013Observed: 9.46 ft at 11:15AM Jun 18, 2013Observed: 9.45 ft at 11:30AM Jun 18, 2013Observed: 9.45 ft at 11:45AM Jun 18, 2013Observed: 9.45 ft at 12:00PM Jun 18, 2013Observed: 9.45 ft at 12:15PM Jun 18, 2013Observed: 9.45 ft at 12:30PM Jun 18, 2013Observed: 9.45 ft at 12:45PM Jun 18, 2013Observed: 9.44 ft at 1:00PM Jun 18, 2013Observed: 9.45 ft at 1:15PM Jun 18, 2013Observed: 9.45 ft at 1:30PM Jun 18, 2013Observed: 9.44 ft at 1:45PM Jun 18, 2013Observed: 9.43 ft at 2:00PM Jun 18, 2013Observed: 9.43 ft at 2:15PM Jun 18, 2013Observed: 9.43 ft at 2:30PM Jun 18, 2013Observed: 9.43 ft at 2:45PM Jun 18, 2013Observed: 9.43 ft at 3:00PM Jun 18, 2013Observed: 9.43 ft at 3:15PM Jun 18, 2013Observed: 9.43 ft at 3:30PM Jun 18, 2013Observed: 9.42 ft at 3:45PM Jun 18, 2013Observed: 9.42 ft at 4:00PM Jun 18, 2013Observed: 9.41 ft at 4:15PM Jun 18, 2013Observed: 9.42 ft at 4:30PM Jun 18, 2013Observed: 9.41 ft at 4:45PM Jun 18, 2013Observed: 9.41 ft at 5:00PM Jun 18, 2013Observed: 9.41 ft at 5:15PM Jun 18, 2013Observed: 9.41 ft at 5:30PM Jun 18, 2013Observed: 9.41 ft at 5:45PM Jun 18, 2013Observed: 9.41 ft at 6:00PM Jun 18, 2013Observed: 9.41 ft at 6:15PM Jun 18, 2013Observed: 9.4 ft at 6:30PM Jun 18, 2013Observed: 9.4 ft at 6:45PM Jun 18, 2013Observed: 9.4 ft at 7:00PM Jun 18, 2013Observed: 9.4 ft at 7:15PM Jun 18, 2013Observed: 9.39 ft at 7:30PM Jun 18, 2013Observed: 9.39 ft at 7:45PM Jun 18, 2013Observed: 9.39 ft at 8:00PM Jun 18, 2013Observed: 9.39 ft at 8:15PM Jun 18, 2013Observed: 9.39 ft at 8:30PM Jun 18, 2013Observed: 9.39 ft at 8:45PM Jun 18, 2013Observed: 9.39 ft at 9:00PM Jun 18, 2013Observed: 9.39 ft at 9:15PM Jun 18, 2013Observed: 9.38 ft at 9:30PM Jun 18, 2013Observed: 9.38 ft at 9:45PM Jun 18, 2013Observed: 9.38 ft at 10:00PM Jun 18, 2013Observed: 9.38 ft at 10:15PM Jun 18, 2013Observed: 9.37 ft at 10:30PM Jun 18, 2013Observed: 9.37 ft at 10:45PM Jun 18, 2013Observed: 9.37 ft at 11:00PM Jun 18, 2013Observed: 9.37 ft at 11:15PM Jun 18, 2013Observed: 9.37 ft at 11:30PM Jun 18, 2013Observed: 9.37 ft at 11:45PM Jun 18, 2013Observed: 9.37 ft at 12:00AM Jun 19, 2013Observed: 9.36 ft at 12:15AM Jun 19, 2013Observed: 9.36 ft at 12:30AM Jun 19, 2013Observed: 9.37 ft at 12:45AM Jun 19, 2013Observed: 9.37 ft at 1:00AM Jun 19, 2013Observed: 9.36 ft at 2:15AM Jun 19, 2013Observed: 9.36 ft at 2:30AM Jun 19, 2013Observed: 9.36 ft at 2:45AM Jun 19, 2013Observed: 9.35 ft at 3:00AM Jun 19, 2013Observed: 9.35 ft at 3:15AM Jun 19, 2013Observed: 9.35 ft at 3:30AM Jun 19, 2013Observed: 9.35 ft at 3:45AM Jun 19, 2013Observed: 9.35 ft at 4:00AM Jun 19, 2013Observed: 9.35 ft at 4:15AM Jun 19, 2013Observed: 9.35 ft at 4:30AM Jun 19, 2013Observed: 9.35 ft at 4:45AM Jun 19, 2013Observed: 9.35 ft at 5:00AM Jun 19, 2013Highest Forecast: 9.4 ft 8:00AM Jun 19, 2013Highest Forecast: 9.4 ft 2:00PM Jun 19, 2013Forecast: 9.3 ft 8:00PM Jun 19, 2013Forecast: 9.3 ft 2:00AM Jun 20, 2013Forecast: 9.3 ft 8:00AM Jun 20, 2013Forecast: 9.3 ft 2:00PM Jun 20, 2013Forecast: 9.3 ft 8:00PM Jun 20, 2013Forecast: 9.3 ft 2:00AM Jun 21, 2013Forecast: 9.2 ft 8:00AM Jun 21, 2013PRTN6(plotting HGIRG) Graph Created (6:51AM Jun 19, 2013)ObservedForecast (issued 10:54AM Jun 18)Latest observed value: 9.35 ft at 5:00 AM EDT 19-Jun-2013. Flood Stage is 19 ft
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About this graph
Tabular Data
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.

NOTE: Forecasts for the Genesee River at Portageville are issued routinely year-round.

Return to Area Map
Upstream Gauge - at Wellsville Upstream Gauge Downstream Gauge Downstream Gauge - at Mount Morris Dam
Flood Categories (in feet)
Major Flood Stage:29
Moderate Flood Stage:25
Flood Stage:19
Action Stage:17

Historical Crests
(1) 35.25 ft on 06/23/1972
(2) 29.12 ft on 01/20/1996
(3) 29.12 ft on 07/06/1902
(4) 25.54 ft on 09/29/1967
(5) 24.90 ft on 05/17/1916
Show More Historical Crests

Low Water Records
(1) 8.10 ft on 08/23/1975
(2) 8.20 ft on 09/16/1983
(3) 8.29 ft on 07/16/1999
(4) 8.50 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
29 MAJOR FLOOD...WIDESPREAD RESIDENTIAL...COMMERCIAL...AND AGRICULTURAL FLOODING. HEAVY DAMAGES. ROAD CLOSURES. POSSIBLE EVACUATIONS.
25 MODERATE FLOOD...WIDESPREAD FLOODING TO AGRICULTURAL LAND. SOME RESIDENTIAL FLOODING AND DAMAGES BEGIN. POSSIBLE ROAD CLOSURES.
19 FLOOD STAGE...RIVER BEGINS TO OVERFLOW INTO AGRICULTURAL LANDS FROM BELFAST TO LETCHWORTH. LITTLE DAMAGE.
17 ACTION STAGE...HIGH FLOWS. NO FLOODING.
About This Location Collapse

Latitude: 42.570278° N, Longitude: 78.042500° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 19 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 1080 ft 1099 ft  

Other Data Sources:
Additional Information Collapse
Observations Courtesy of the U.S. Geological Survey.
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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Page last modified: 13-Mar-2013 6:34 PM 		Disclaimer
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