Major Flood
10 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
7 ft
Minor Flood
6 ft
Action Stage
4 ft
What Floods at Each Level
10 ft
Significant flooding is occurring, with homes, buildings, and roads flooded.
7 ft
Water covers the bridge on Sprecher Road near the camp entrance, and also covers the bridges upstream on Sprecher Road and Bakersville Road.
6 ft
Lowlands and fields on both sides of the river flood.
4 ft
Water begins to overflow the banks downstream of the gage, but there is no impact.
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 |
|---|---|---|
| Feb 11, 1985 | 4.45 ft | 459 cfs |
| Feb 25, 1979 | 4.41 ft | 450 cfs |
| Sep 3, 2003 | 4.1 ft | 384 cfs |
About This Gauge
Get Flood Alerts for Marsh 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 Marsh Run at Grimes?
The Marsh Run at Grimes gauge is maintained by USGS (site 01617800) 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 Marsh Run at Grimes?
The NWS-defined flood stage for Marsh Run at Grimes is 6 feet. Action stage begins at 4 feet. Moderate flooding starts at 7 feet, and major flooding at 10 feet.
How do I get alerts when Marsh Run rises?
Download StormCast free on Google Play, go to River Gauges, and add Marsh Run at Grimes 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 Marsh Run at Grimes gauge located?
The gauge is located in Washington County, Maryland at coordinates 39.5144°N, 77.7772°W. USGS site number: 01617800. 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.