Greenbrier River at Alderson, WV
River level and flood forecast · Summers County
Normal5.4 ftas of Mon 3:45 PM
The river is 8.6 ft below flood stage (14 ft).
Forecast to fall to 3.1 ft by Sat, Oct 17, 8 AM.
Flow: 5,580 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 10:36 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 19 ft |
| Moderate flood stage | 16 ft |
| Flood stage | 14 ft |
| Action stage | 9 ft |
| Record crest (January 20, 1996) | 24.33 ft |
What floods at each level
From the National Weather Service, highest first.
- 30 ftRailroad tracks on left bank flooded.
- 26.5 ftBridge floor at gage is flooded.
- 19 ftSignificant flooding in town of Alderson.
- 17 ftFlooding of roads in Alderson and some buildings affected.
- 15 ftFarm land along river bank near gage is flooded.
- 13.5 ftAdditional low spots dowmstream from Alderson along Route 12/3 are flooded.
- 12 ftFlooding begins along portions of Route 3 downstream from Alderson near Eagle Branch.
- 11.5 ftWater impacts campers and campsites along Crook Lane in Pence Springs.
Highest crests on record
- 24.33 ft — January 20, 1996
- 23.95 ft — November 5, 1985
- 22 ft — June 24, 2016
- 20.3 ft — December 27, 1973
- 19.9 ft — March 7, 1967
Recent crests: 11.42 ft (February 21, 2026) · 13.9 ft (February 16, 2025) · 15.31 ft (February 7, 2025) · 13.8 ft (February 1, 2025) · 9.12 ft (April 4, 2024)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (ALDW2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.