Bynum Run at Bel Air, MD
River level and flood forecast · Harford County
The river is 8.2 ft below flood stage (9 ft).
Flow: 14 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.
Get flood alerts for this river
An email when the National Weather Service forecasts Bynum Run at Bel Air to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 17 ft |
| Moderate flood stage | 13 ft |
| Flood stage | 9 ft |
| Action stage | 6 ft |
| Record crest (August 20, 2016) | 11.15 ft |
What floods at each level
From the National Weather Service, highest first.
- 17 ftWater approaches homes near the stream and covers a portion of Brierhill Drive.
- 13 ftThe bridge over Bynum Run at Maryland Route 22 begins to flood.
- 12 ftWater approaches McPhail Road.
- 9 ftFlooding begins to affect Bynum Run Park near Route 22.
- 6 ftFields begin to flood near the stream.
Highest crests on record
- 11.15 ft — August 20, 2016
- 9.91 ft — September 16, 1999
- 9.27 ft — August 18, 2017
- 9.23 ft — June 26, 2006
- 9.18 ft — June 4, 2021
Recent crests: 9.03 ft (January 10, 2024) · 7.08 ft (September 23, 2021) · 7.54 ft (July 13, 2021) · 9.18 ft (June 4, 2021) · 6.85 ft (July 11, 2019)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (BABM2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.