Major Flood
18 ft
Current Water Level
Gage Height
Loading...
Streamflow
Loading...
Last Reading
Loading...
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
15 ft
Minor Flood
11 ft
Action Stage
9 ft
What Floods at Each Level
18 ft
Major flooding is occurring with buildings and roads severely impacted.
15 ft
Water begins to affect buildings near the stream.
13 ft
Town Center Court begins to flood.
11 ft
Water begins to cover parking lots near the stream, particularly near Town Center Court.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
Loading chart data...
Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jul 31, 1971 | 18.49 ft | 8,000 cfs |
| Sep 29, 2010 | 16.73 ft | 4,780 cfs |
| Aug 26, 1978 | 16.17 ft | 3,880 cfs |
About This Gauge
USGS Site
NWS LID
WHMM2
River
Whitemarsh Run
County
Baltimore, MD
Coordinates
39.3706°N, 76.4458°W
Get Flood Alerts for Whitemarsh 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 Whitemarsh Run at White Marsh?
The Whitemarsh Run at White Marsh gauge is maintained by USGS (site 01585100) 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 Whitemarsh Run at White Marsh?
The NWS-defined flood stage for Whitemarsh Run at White Marsh is 11 feet. Action stage begins at 9 feet. Moderate flooding starts at 15 feet, and major flooding at 18 feet.
How do I get alerts when Whitemarsh Run rises?
Download StormCast free on Google Play, go to River Gauges, and add Whitemarsh Run at White Marsh 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 Whitemarsh Run at White Marsh gauge located?
The gauge is located in Baltimore County, Maryland at coordinates 39.3706°N, 76.4458°W. USGS site number: 01585100. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Whitemarsh Run
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Stage may be affected by ice.