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This probabilistic forecast is issued by the Middle Atlantic River Forecast Center.
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About this graph
Forecasts for the Cacapon River near Great Cacapon are issued routinely year-round.
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Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 20
Moderate Flood Stage: 16
Flood Stage: 9
Action Stage: 7
Low Stage (in feet): -9999

Historic Crests
(1) 30.10 ft on 03/18/1936
(2) 24.70 ft on 05/01/1889
(3) 24.30 ft on 08/19/1955
(4) 23.67 ft on 10/16/1942
(5) 22.60 ft on 04/26/1937
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 10.62 ft on 01/29/2024 (P)
(2) 10.47 ft on 01/10/2024 (P)
(3) 14.36 ft on 05/08/2022 (P)
(4) 10.59 ft on 03/01/2021
(5) 10.29 ft on 05/01/2020
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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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
23 Floodwaters approach homes near Rock Ford Road.
20 Floodwaters approach homes near Largent, as well as near Fisher Bridge Road and Running Waters Way. Widespread flooding is occurring throughout the basin.
17 Route 9 is flooded in multiple locations, near the southern bridge over the Cacapon in Morgan County, and near Claybaugh Rocks.
16 Route 9 begins to flood near the southern bridge over the Cacapon River in Morgan County.
15 Floodwaters reach Trailer Park Road near Largent.
12 Running Waters Way begins to flood.
11 Kilgore Road is flooded in multiple spots.
9 Rock Ford Road begins to flood in multiple locations, including flowing completely over the low water bridge. Constant Run Road and a small portion of Kilgore Road also begin to flood.

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) 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 72 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
National Weather Service
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(571) 888-3500
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Page last modified: 2-Nov-2020 7:30 PM
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