Major Flood
17 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
13 ft
Minor Flood
9 ft
Action Stage
6 ft
What Floods at Each Level
17 ft
Water approaches homes near the stream and covers a portion of Brierhill Drive.
13 ft
The bridge over Bynum Run at Maryland Route 22 begins to flood.
12 ft
Water approaches McPhail Road.
9 ft
Flooding begins to affect Bynum Run Park near Route 22.
6 ft
Fields begin to flood near 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 |
|---|---|---|
| Aug 19, 2016 | 11.15 ft | 5,600 cfs |
| Sep 15, 1999 | 9.91 ft | 3,550 cfs |
| Aug 17, 2017 | 9.27 ft | 3,680 cfs |
About This Gauge
Get Flood Alerts for Bynum 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 Bynum Run at Bel Air?
The Bynum Run at Bel Air gauge is maintained by USGS (site 01581500) 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 Bynum Run at Bel Air?
The NWS-defined flood stage for Bynum Run at Bel Air is 9 feet. Action stage begins at 6 feet. Moderate flooding starts at 13 feet, and major flooding at 17 feet.
How do I get alerts when Bynum Run rises?
Download StormCast free on Google Play, go to River Gauges, and add Bynum Run at Bel Air 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 Bynum Run at Bel Air gauge located?
The gauge is located in Harford County, Maryland at coordinates 39.5414°N, 76.3300°W. USGS site number: 01581500. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Stage may be affected by ice.