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This probabilistic forecast is issued by the Southeast River Forecast Center.
tab left off Hydrograph tab right off tab left off River at a Glance tab right off tab left off Download tab right off tab left on tab right on
About this graph
Forecasts for the Dan River at South Boston are issued routinely year-round.

Vertical Datum updated from NGVD29 to NAVD88 by gauge owner.

Return to Area Map

Upstream Gauge - at Paces Upstream Gauge
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 34
Moderate Flood Stage: 29
Flood Stage: 22
Action Stage: 18
Low Stage (in feet): -9999

Historic Crests
(1) 33.37 ft on 06/24/1972
(2) 33.22 ft on 09/08/1996
(3) 32.57 ft on 04/18/1987
(4) 31.80 ft on 08/16/1940
(5) 31.47 ft on 04/28/1978
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 22.27 ft on 03/20/2021
(2) 23.99 ft on 02/17/2021
(3) 22.25 ft on 02/15/2021
(4) 20.03 ft on 12/06/2020
(5) 23.60 ft on 12/02/2020
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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
32 Flooding closes intersection of Routes 501 and 58.
29.5 Route 501 begins to flood and number of businesses in the Riverdale area are affected.
29 A number of businesses in the Riverdale area are affected.
27 Water approaches route 501.
19 Flooding begins in low-lying agricultural land and woods.

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
National Weather Service
Blacksburg Weather Forecast Office
1750 Forecast Drive
Blacksburg, VA 24060
(540) 553-8900
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