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This probabilistic forecast is issued by the Ohio River Forecast Center.
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About this graph
Forecasts for the Greenbrier River at Alderson are issued routinely year-round.
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Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 19
Moderate Flood Stage: 16
Flood Stage: 14
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 24.33 ft on 01/20/1996
(2) 23.95 ft on 11/05/1985
(3) 22.00 ft on 06/24/2016
(4) 20.30 ft on 12/27/1973
(5) 19.90 ft on 03/07/1967
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 6.99 ft on 07/28/2022 (P)
(2) 11.41 ft on 05/08/2022 (P)
(3) 12.70 ft on 02/05/2022
(4) 17.53 ft on 03/02/2021
(5) 10.66 ft on 12/25/2020
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.63 ft on 09/20/1964
(2) 1.65 ft on 10/12/1931
(3) 1.65 ft on 08/12/1930
(4) 1.66 ft on 09/29/1959
(5) 1.73 ft on 09/26/1932
Show More Low Water Records
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Gauge LocationGauge Map Marker
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
30 Railroad tracks on left bank flooded.
26.5 Bridge floor at gage is flooded.
19 Significant flooding in town of Alderson.
17 Flooding of roads in Alderson and some buildings affected.
15 Farm land along river bank near gage is flooded.
13.5 Additional low spots dowmstream from Alderson along Route 12/3 are flooded.
12 Flooding begins along portions of Route 3 downstream from Alderson near Eagle Branch.
(1) USGS gage house on LB - Dir. NE: 11/30/2007
(2) DS RB - Dir. NW: 11/30/2007; Stage - 2.95'; Flow ~ 668 cfs
(3) DS center channel - Dir. W: 11/30/2007; Stage - 2.95'
(4) DS LB - Dir. WSW: 11/30/2007; Stage - 2.95'
(5) US RB - Dir. ENE: 11/30/2007; Stage - 2.95'
(6) US center channel - Dir. E: 11/30/2007; Stage - 2.95'
(7) US LB - Dir. ESE (USGS GH visible); 11/30/2007

Other Real-time and/or Archive Data Sources:

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

Click individual graphics to enlarge.

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
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1750 Forecast Drive
Blacksburg, VA 24060
(540) 553-8900
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Page last modified: 2-Nov-2020 7:30 PM
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