Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap

  
 

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.



Hydrograph River at a Glance Download
Genesee River at Wellsville Stage (ft)Flow (kcfs)Observed: 4.36 ft at 6:00PM Jun 06, 2023Observed: 4.36 ft at 6:15PM Jun 06, 2023Observed: 4.36 ft at 6:30PM Jun 06, 2023Highest Observation: 4.37 ft at 6:45PM Jun 06, 2023Highest Observation: 4.37 ft at 7:00PM Jun 06, 2023Highest Observation: 4.37 ft at 7:15PM Jun 06, 2023Highest Observation: 4.37 ft at 7:30PM Jun 06, 2023Highest Observation: 4.37 ft at 7:45PM Jun 06, 2023Highest Observation: 4.37 ft at 8:00PM Jun 06, 2023Highest Observation: 4.37 ft at 8:15PM Jun 06, 2023Highest Observation: 4.37 ft at 8:30PM Jun 06, 2023Highest Observation: 4.37 ft at 8:45PM Jun 06, 2023Highest Observation: 4.37 ft at 9:00PM Jun 06, 2023Highest Observation: 4.37 ft at 9:15PM Jun 06, 2023Highest Observation: 4.37 ft at 9:30PM Jun 06, 2023Highest Observation: 4.37 ft at 9:45PM Jun 06, 2023Highest Observation: 4.37 ft at 10:00PM Jun 06, 2023Highest Observation: 4.37 ft at 10:15PM Jun 06, 2023Highest Observation: 4.37 ft at 10:30PM Jun 06, 2023Highest Observation: 4.37 ft at 10:45PM Jun 06, 2023Highest Observation: 4.37 ft at 11:00PM Jun 06, 2023Highest Observation: 4.37 ft at 11:15PM Jun 06, 2023Highest Observation: 4.37 ft at 11:16PM Jun 06, 2023Highest Observation: 4.37 ft at 11:30PM Jun 06, 2023Highest Observation: 4.37 ft at 11:45PM Jun 06, 2023Highest Observation: 4.37 ft at 12:00AM Jun 07, 2023Highest Observation: 4.37 ft at 12:15AM Jun 07, 2023Highest Observation: 4.37 ft at 12:30AM Jun 07, 2023Highest Observation: 4.37 ft at 12:45AM Jun 07, 2023Highest Observation: 4.37 ft at 1:00AM Jun 07, 2023Highest Observation: 4.37 ft at 1:15AM Jun 07, 2023Highest Observation: 4.37 ft at 1:30AM Jun 07, 2023Highest Observation: 4.37 ft at 1:45AM Jun 07, 2023Highest Observation: 4.37 ft at 2:00AM Jun 07, 2023Highest Observation: 4.37 ft at 2:15AM Jun 07, 2023Highest Observation: 4.37 ft at 2:30AM Jun 07, 2023Highest Observation: 4.37 ft at 2:45AM Jun 07, 2023Highest Observation: 4.37 ft at 3:00AM Jun 07, 2023Highest Observation: 4.37 ft at 3:15AM Jun 07, 2023Highest Observation: 4.37 ft at 3:30AM Jun 07, 2023Highest Observation: 4.37 ft at 3:45AM Jun 07, 2023Highest Observation: 4.37 ft at 4:00AM Jun 07, 2023Highest Observation: 4.37 ft at 4:15AM Jun 07, 2023Highest Observation: 4.37 ft at 4:30AM Jun 07, 2023Highest Observation: 4.37 ft at 4:45AM Jun 07, 2023Highest Observation: 4.37 ft at 5:00AM Jun 07, 2023Highest Observation: 4.37 ft at 5:15AM Jun 07, 2023Highest Observation: 4.37 ft at 5:30AM Jun 07, 2023Highest Observation: 4.37 ft at 5:45AM Jun 07, 2023Highest Observation: 4.37 ft at 6:00AM Jun 07, 2023Observed: 4.36 ft at 6:15AM Jun 07, 2023Observed: 4.36 ft at 6:30AM Jun 07, 2023Observed: 4.36 ft at 6:45AM Jun 07, 2023Observed: 4.36 ft at 8:00AM Jun 07, 2023Observed: 4.36 ft at 8:15AM Jun 07, 2023Observed: 4.36 ft at 8:30AM Jun 07, 2023Observed: 4.36 ft at 8:45AM Jun 07, 2023Observed: 4.36 ft at 9:00AM Jun 07, 2023Observed: 4.36 ft at 9:15AM Jun 07, 2023Observed: 4.36 ft at 9:30AM Jun 07, 2023Observed: 4.36 ft at 9:45AM Jun 07, 2023Observed: 4.36 ft at 10:00AM Jun 07, 2023Observed: 4.36 ft at 10:15AM Jun 07, 2023Observed: 4.36 ft at 10:30AM Jun 07, 2023Observed: 4.36 ft at 10:45AM Jun 07, 2023Observed: 4.36 ft at 11:00AM Jun 07, 2023Observed: 4.36 ft at 11:15AM Jun 07, 2023Observed: 4.36 ft at 11:30AM Jun 07, 2023Observed: 4.36 ft at 11:45AM Jun 07, 2023Observed: 4.36 ft at 12:00PM Jun 07, 2023Observed: 4.36 ft at 12:15PM Jun 07, 2023Observed: 4.36 ft at 12:30PM Jun 07, 2023Observed: 4.36 ft at 12:45PM Jun 07, 2023Observed: 4.36 ft at 1:00PM Jun 07, 2023Observed: 4.36 ft at 1:15PM Jun 07, 2023Observed: 4.35 ft at 1:30PM Jun 07, 2023Observed: 4.35 ft at 1:45PM Jun 07, 2023Observed: 4.35 ft at 2:00PM Jun 07, 2023Observed: 4.35 ft at 2:15PM Jun 07, 2023Observed: 4.35 ft at 2:30PM Jun 07, 2023Observed: 4.35 ft at 2:45PM Jun 07, 2023Observed: 4.35 ft at 3:00PM Jun 07, 2023Observed: 4.35 ft at 3:15PM Jun 07, 2023Observed: 4.35 ft at 3:30PM Jun 07, 2023Observed: 4.35 ft at 3:45PM Jun 07, 2023Observed: 4.35 ft at 4:00PM Jun 07, 2023Observed: 4.35 ft at 4:15PM Jun 07, 2023Observed: 4.35 ft at 4:30PM Jun 07, 2023Observed: 4.35 ft at 4:45PM Jun 07, 2023Observed: 4.35 ft at 5:00PM Jun 07, 2023Observed: 4.35 ft at 5:15PM Jun 07, 2023Observed: 4.35 ft at 5:30PM Jun 07, 2023Observed: 4.35 ft at 5:45PM Jun 07, 2023Observed: 4.35 ft at 6:00PM Jun 07, 2023Observed: 4.36 ft at 6:15PM Jun 07, 2023Observed: 4.36 ft at 6:30PM Jun 07, 2023Observed: 4.36 ft at 6:45PM Jun 07, 2023Observed: 4.36 ft at 7:00PM Jun 07, 2023Observed: 4.36 ft at 7:15PM Jun 07, 2023Observed: 4.36 ft at 7:30PM Jun 07, 2023Observed: 4.36 ft at 7:45PM Jun 07, 2023Observed: 4.36 ft at 8:00PM Jun 07, 2023Observed: 4.36 ft at 8:15PM Jun 07, 2023Observed: 4.36 ft at 8:30PM Jun 07, 2023Observed: 4.36 ft at 8:45PM Jun 07, 2023Observed: 4.36 ft at 10:00PM Jun 07, 2023Observed: 4.36 ft at 10:15PM Jun 07, 2023Observed: 4.36 ft at 10:30PM Jun 07, 2023Observed: 4.36 ft at 10:45PM Jun 07, 2023Observed: 4.36 ft at 11:00PM Jun 07, 2023Observed: 4.36 ft at 11:15PM Jun 07, 2023Observed: 4.36 ft at 11:30PM Jun 07, 2023Observed: 4.36 ft at 11:45PM Jun 07, 2023Observed: 4.36 ft at 12:00AM Jun 08, 2023Observed: 4.36 ft at 12:15AM Jun 08, 2023Observed: 4.36 ft at 12:30AM Jun 08, 2023Observed: 4.36 ft at 12:45AM Jun 08, 2023Observed: 4.36 ft at 1:00AM Jun 08, 2023Highest Observation: 4.37 ft at 1:15AM Jun 08, 2023Highest Observation: 4.37 ft at 1:30AM Jun 08, 2023Highest Observation: 4.37 ft at 1:45AM Jun 08, 2023Highest Observation: 4.37 ft at 3:00AM Jun 08, 2023Highest Observation: 4.37 ft at 3:15AM Jun 08, 2023Highest Observation: 4.37 ft at 3:30AM Jun 08, 2023Highest Observation: 4.37 ft at 3:45AM Jun 08, 2023Highest Observation: 4.37 ft at 4:00AM Jun 08, 2023Highest Observation: 4.37 ft at 4:15AM Jun 08, 2023Highest Observation: 4.37 ft at 4:30AM Jun 08, 2023Highest Observation: 4.37 ft at 4:45AM Jun 08, 2023Highest Observation: 4.37 ft at 5:00AM Jun 08, 2023Highest Observation: 4.37 ft at 5:15AM Jun 08, 2023Highest Observation: 4.37 ft at 5:30AM Jun 08, 2023Observed: 4.36 ft at 5:45AM Jun 08, 2023Observed: 4.36 ft at 6:00AM Jun 08, 2023Observed: 4.36 ft at 6:15AM Jun 08, 2023Observed: 4.36 ft at 6:30AM Jun 08, 2023Observed: 4.36 ft at 6:45AM Jun 08, 2023Observed: 4.36 ft at 7:00AM Jun 08, 2023Observed: 4.36 ft at 7:15AM Jun 08, 2023Observed: 4.35 ft at 7:30AM Jun 08, 2023Observed: 4.35 ft at 7:45AM Jun 08, 2023Observed: 4.35 ft at 8:00AM Jun 08, 2023Observed: 4.35 ft at 8:15AM Jun 08, 2023Observed: 4.35 ft at 8:30AM Jun 08, 2023Observed: 4.35 ft at 8:45AM Jun 08, 2023Observed: 4.35 ft at 9:00AM Jun 08, 2023Observed: 4.35 ft at 9:15AM Jun 08, 2023Observed: 4.35 ft at 9:30AM Jun 08, 2023Observed: 4.35 ft at 9:45AM Jun 08, 2023Observed: 4.35 ft at 11:00AM Jun 08, 2023Observed: 4.35 ft at 11:15AM Jun 08, 2023Observed: 4.35 ft at 11:30AM Jun 08, 2023Observed: 4.35 ft at 11:45AM Jun 08, 2023Observed: 4.35 ft at 12:00PM Jun 08, 2023Observed: 4.35 ft at 12:15PM Jun 08, 2023Observed: 4.35 ft at 12:30PM Jun 08, 2023Observed: 4.35 ft at 12:45PM Jun 08, 2023Observed: 4.35 ft at 1:00PM Jun 08, 2023Observed: 4.35 ft at 1:15PM Jun 08, 2023Observed: 4.35 ft at 1:30PM Jun 08, 2023Observed: 4.35 ft at 1:45PM Jun 08, 2023Observed: 4.35 ft at 2:00PM Jun 08, 2023Observed: 4.35 ft at 2:15PM Jun 08, 2023Observed: 4.35 ft at 2:30PM Jun 08, 2023Observed: 4.35 ft at 2:45PM Jun 08, 2023Observed: 4.35 ft at 3:00PM Jun 08, 2023Observed: 4.35 ft at 3:15PM Jun 08, 2023Observed: 4.35 ft at 3:30PM Jun 08, 2023Observed: 4.35 ft at 3:45PM Jun 08, 2023Observed: 4.35 ft at 4:00PM Jun 08, 2023Observed: 4.35 ft at 4:15PM Jun 08, 2023Observed: 4.35 ft at 4:30PM Jun 08, 2023Observed: 4.35 ft at 4:45PM Jun 08, 2023Observed: 4.35 ft at 5:00PM Jun 08, 2023Observed: 4.35 ft at 5:15PM Jun 08, 2023Observed: 4.35 ft at 5:30PM Jun 08, 2023Observed: 4.35 ft at 5:45PM Jun 08, 2023Observed: 4.35 ft at 6:00PM Jun 08, 2023Observed: 4.36 ft at 6:15PM Jun 08, 2023Observed: 4.36 ft at 6:30PM Jun 08, 2023Observed: 4.36 ft at 6:45PM Jun 08, 2023Observed: 4.36 ft at 7:00PM Jun 08, 2023Observed: 4.36 ft at 7:15PM Jun 08, 2023Observed: 4.36 ft at 7:30PM Jun 08, 2023Observed: 4.36 ft at 7:45PM Jun 08, 2023Observed: 4.36 ft at 8:00PM Jun 08, 2023Observed: 4.36 ft at 8:15PM Jun 08, 2023Observed: 4.36 ft at 8:30PM Jun 08, 2023Observed: 4.36 ft at 8:45PM Jun 08, 2023Observed: 4.36 ft at 10:00PM Jun 08, 2023Observed: 4.36 ft at 10:15PM Jun 08, 2023Observed: 4.36 ft at 10:30PM Jun 08, 2023Observed: 4.36 ft at 10:45PM Jun 08, 2023Observed: 4.36 ft at 11:00PM Jun 08, 2023Observed: 4.36 ft at 11:15PM Jun 08, 2023Observed: 4.36 ft at 11:16PM Jun 08, 2023Observed: 4.36 ft at 11:30PM Jun 08, 2023Observed: 4.36 ft at 11:45PM Jun 08, 2023Highest Observation: 4.37 ft at 12:00AM Jun 09, 2023Highest Observation: 4.37 ft at 12:15AM Jun 09, 2023Highest Observation: 4.37 ft at 12:30AM Jun 09, 2023Highest Observation: 4.37 ft at 12:45AM Jun 09, 2023Highest Observation: 4.37 ft at 1:00AM Jun 09, 2023Highest Observation: 4.37 ft at 1:15AM Jun 09, 2023Highest Observation: 4.37 ft at 1:30AM Jun 09, 2023Highest Observation: 4.37 ft at 1:45AM Jun 09, 2023Highest Observation: 4.37 ft at 2:00AM Jun 09, 2023Highest Observation: 4.37 ft at 2:15AM Jun 09, 2023Highest Observation: 4.37 ft at 2:30AM Jun 09, 2023Highest Observation: 4.37 ft at 2:45AM Jun 09, 2023Highest Observation: 4.37 ft at 3:00AM Jun 09, 2023Highest Observation: 4.37 ft at 3:15AM Jun 09, 2023Highest Observation: 4.37 ft at 3:30AM Jun 09, 2023Highest Observation: 4.37 ft at 3:45AM Jun 09, 2023Highest Observation: 4.37 ft at 4:00AM Jun 09, 2023Highest Observation: 4.37 ft at 4:15AM Jun 09, 2023Highest Observation: 4.37 ft at 4:30AM Jun 09, 2023Highest Observation: 4.37 ft at 4:45AM Jun 09, 2023Highest Observation: 4.37 ft at 5:00AM Jun 09, 2023Highest Observation: 4.37 ft at 5:15AM Jun 09, 2023Highest Observation: 4.37 ft at 5:30AM Jun 09, 2023Highest Observation: 4.37 ft at 5:45AM Jun 09, 2023Highest Observation: 4.37 ft at 6:00AM Jun 09, 2023Highest Observation: 4.37 ft at 6:15AM Jun 09, 2023Observed: 4.36 ft at 6:30AM Jun 09, 2023Observed: 4.36 ft at 6:45AM Jun 09, 2023Observed: 4.36 ft at 7:00AM Jun 09, 2023Observed: 4.36 ft at 7:15AM Jun 09, 2023Observed: 4.36 ft at 7:30AM Jun 09, 2023Observed: 4.36 ft at 7:45AM Jun 09, 2023Observed: 4.36 ft at 8:00AM Jun 09, 2023Observed: 4.36 ft at 8:15AM Jun 09, 2023Observed: 4.36 ft at 8:30AM Jun 09, 2023Observed: 4.36 ft at 8:45AM Jun 09, 2023Observed: 4.36 ft at 9:00AM Jun 09, 2023Observed: 4.36 ft at 9:15AM Jun 09, 2023Observed: 4.36 ft at 9:30AM Jun 09, 2023Observed: 4.36 ft at 9:45AM Jun 09, 2023Observed: 4.36 ft at 10:00AM Jun 09, 2023Observed: 4.36 ft at 10:15AM Jun 09, 2023Observed: 4.36 ft at 10:30AM Jun 09, 2023Observed: 4.36 ft at 10:45AM Jun 09, 2023Observed: 4.36 ft at 11:00AM Jun 09, 2023Observed: 4.36 ft at 11:15AM Jun 09, 2023Observed: 4.36 ft at 11:30AM Jun 09, 2023Observed: 4.36 ft at 11:45AM Jun 09, 2023Observed: 4.36 ft at 12:00PM Jun 09, 2023Observed: 4.36 ft at 12:15PM Jun 09, 2023Observed: 4.36 ft at 12:30PM Jun 09, 2023Observed: 4.36 ft at 12:45PM Jun 09, 2023Observed: 4.36 ft at 1:00PM Jun 09, 2023Observed: 4.36 ft at 1:15PM Jun 09, 2023Observed: 4.36 ft at 1:30PM Jun 09, 2023Observed: 4.36 ft at 1:45PM Jun 09, 2023Observed: 4.36 ft at 2:00PM Jun 09, 2023Observed: 4.36 ft at 2:15PM Jun 09, 2023Observed: 4.36 ft at 2:30PM Jun 09, 2023Observed: 4.36 ft at 2:45PM Jun 09, 2023Observed: 4.36 ft at 3:00PM Jun 09, 2023Observed: 4.36 ft at 3:15PM Jun 09, 2023Observed: 4.36 ft at 3:30PM Jun 09, 2023Observed: 4.36 ft at 3:45PM Jun 09, 2023Observed: 4.36 ft at 4:00PM Jun 09, 2023Highest Observation: 4.37 ft at 4:15PM Jun 09, 2023Highest Observation: 4.37 ft at 4:30PM Jun 09, 2023Highest Observation: 4.37 ft at 4:45PM Jun 09, 2023Forecast: 4.4 ft 8:00PM Jun 09, 2023Highest Forecast: 4.5 ft 2:00AM Jun 10, 2023Highest Forecast: 4.5 ft 8:00AM Jun 10, 2023Forecast: 4.4 ft 2:00PM Jun 10, 2023Forecast: 4.4 ft 8:00PM Jun 10, 2023Forecast: 4.4 ft 2:00AM Jun 11, 2023Forecast: 4.4 ft 8:00AM Jun 11, 2023Forecast: 4.4 ft 2:00PM Jun 11, 2023Forecast: 4.4 ft 8:00PM Jun 11, 2023Forecast: 4.4 ft 2:00AM Jun 12, 2023Forecast: 4.4 ft 8:00AM Jun 12, 2023WLLN6(plotting HGIRG) Graph Created (5:46PM Jun 9, 2023)ObservedForecast (issued 11:02AM Jun 9)Latest observed value: 4.37 ft at 4:45 PM EDT 9-Jun-2023. Flood Stage is 11 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Forecasts for the Genesee River at Wellsville are issued routinely year-round.
Return to Area Map
Downstream Gauge Downstream Gauge - at Portageville
Flood Categories (in feet)
Major Flood Stage: 17
Moderate Flood Stage: 14
Flood Stage: 11
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 20.70 ft on 06/23/1972
(2) 16.20 ft on 11/25/1950
(3) 16.13 ft on 01/19/1996
(4) 14.90 ft on 01/22/1959
(5) 14.80 ft on 03/05/1964
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 11.69 ft on 02/18/2022
(2) 11.11 ft on 01/13/2017
(3) 11.55 ft on 01/25/2010
(4) 11.64 ft on 03/15/2007
(5) 16.13 ft on 01/19/1996
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 4.00 ft on 09/15/1973
(2) 4.20 ft on 08/03/1999
(3) 4.24 ft on 09/29/1980
(4) 4.40 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
20 Extreme flood, levee is topped at 19.9 feet. Widespread flooding along the river throughout Allegany County. Heavy residential damages including Wellsville. Evacuations necessary.
17 Major flood, major flooding all along the Genesee River throughout Allegany County. Commercial and residential damages. Road closures. Levee continues to protect most of Wellsville to 19.9 feet.
14 Moderate flood, general flooding along the river in lowlying areas throughout Allegany County. Some residential and commercial damages. The levee protects most of Wellsville.
11 Flood stage, banks overflow and begin to flood lowlying areas outside the levees in places such as Scio and Whitesville. Minor damages.
9 Action stage, high flows. No flooding.
About This Location Collapse

Latitude: 42.122222° N, Longitude: 77.957500° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 11 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 1469.51 ft 1480.51 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 1470.00 ft 1481.00 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

Additional Information Collapse
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 48 hours.

See the Product Description Document link for more details on the interpretation of the 3,7 day graphics.

Click individual graphics to enlarge.

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
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:30 PM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities