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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 South Branch Potomac River near Springfield are issued routinely year-round.
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Upstream Gauge - near Petersburg Upstream Gauge
Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 25
Moderate Flood Stage: 19
Flood Stage: 15
Action Stage: 12
Low Stage (in feet): 0

Historic Crests
(1) 44.22 ft on 11/05/1985
(2) 34.98 ft on 09/07/1996
(3) 34.20 ft on 03/18/1936
(4) 29.85 ft on 06/18/1949
(5) 28.41 ft on 01/20/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 15.34 ft on 03/01/2021
(2) 16.25 ft on 12/16/2018
(3) 15.93 ft on 09/29/2018
(4) 17.49 ft on 06/03/2018
(5) 19.44 ft on 04/17/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.40 ft on 01/28/1956
(2) 0.40 ft on 07/30/1966
(3) 0.64 ft on 09/10/1965
(4) 0.97 ft on 09/11/1966
(5) 1.00 ft on 09/23/1967
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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
25 Most camphouses and a large portion of fields in the area are flooded.
19 Camphouses on the right downstream side of the river are flooded.
17 Water approaches camphouses downstream from the gage.
15 Milleson Mill Road (County Route 28/5) and Clarence Taylor Road (Route 3/7) begin to flood. Water covers a significant portion of meadowlands near the river. The boat launch ramp on the upstream right abutment of the bridge also floods.
11 The river begins to overflow the banks in a few low lying areas. Campers should move away from the river.
5 Hazardous conditions for recreation may exist.

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
(703) 996-2200
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Page last modified: 2-Nov-2020 7:30 PM
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