Major Flood
20 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: BRSV2). Live data may be limited. View on NWS AHPS →
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
16 ft
Minor Flood
9.5 ft
Action Stage
8.5 ft
What Floods at Each Level
20 ft
Water approaches the runways at Manassas Regional Airport.
16 ft
Water approaches backyards in the Kingsbrooke neighborhood.
9.5 ft
Piper Lane is flooded near Manassas Airport. Trails near the stream are also flooded.
8.5 ft
Trails near the stream begin to flood. People should move away from the stream.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jul 17, 2025 | 14.89 ft | — |
| Jan 10, 2024 | 14.53 ft | — |
| Jul 21, 2018 | 14.2 ft | — |
About This Gauge
NWS LID
BRSV2
River
Broad Run
County
Prince William, VA
Coordinates
38.7494°N, 77.5633°W
Get Flood Alerts for Broad Run
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Broad Run near Bristow?
The Broad Run near Bristow gauge is maintained by USGS and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Broad Run near Bristow?
The NWS-defined flood stage for Broad Run near Bristow is 9.5 feet. Action stage begins at 8.5 feet. Moderate flooding starts at 16 feet, and major flooding at 20 feet.
How do I get alerts when Broad Run rises?
Download StormCast free on Google Play, go to River Gauges, and add Broad Run near Bristow to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Broad Run near Bristow gauge located?
The gauge is located in Prince William County, Virginia at coordinates 38.7494°N, 77.5633°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Broad Run
More Resources
Source & Notes
Data provided by: VT Occoquan Monitoring Laboratory
- Stage may be affected by ice.