Major Flood
25 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
21 ft
Minor Flood
13 ft
Action Stage
11 ft
What Floods at Each Level
25 ft
Significant flooding is occurring on both sides of the river with homes and roads flooded.
23.5 ft
Water covers the Taneytown Pike bridge over the Monocacy. The road on each side will already be underwater.
21 ft
Water approaches homes on the Frederick County side near Bridgeport.
20 ft
Taneytown Pike begins to flood on both sides of the river.
16 ft
Flooding of fields and yards begins near Bridgeport.
13 ft
Baptist Road near Bridgeport begins to flood.
11 ft
Water begins to overflow downstream areas, but is not affecting any property.
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 |
|---|---|---|
| Jun 19, 1996 | 25.42 ft | 24,400 cfs |
| Aug 23, 1933 | 25 ft | 23,000 cfs |
| Jun 21, 1972 | 24.05 ft | 21,300 cfs |
About This Gauge
USGS Site
NWS LID
BDGM2
River
Monocacy River
County
Frederick, MD
Coordinates
39.6789°N, 77.2344°W
Get Flood Alerts for Monocacy River
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 Monocacy River at Bridgeport?
The Monocacy River at Bridgeport gauge is maintained by USGS (site 01639000) 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 Monocacy River at Bridgeport?
The NWS-defined flood stage for Monocacy River at Bridgeport is 13 feet. Action stage begins at 11 feet. Moderate flooding starts at 21 feet, and major flooding at 25 feet.
How do I get alerts when Monocacy River rises?
Download StormCast free on Google Play, go to River Gauges, and add Monocacy River at Bridgeport 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 Monocacy River at Bridgeport gauge located?
The gauge is located in Frederick County, Maryland at coordinates 39.6789°N, 77.2344°W. USGS site number: 01639000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Monocacy River
On This River
Downstream: Monocacy River at Monocacy Blvd. in Frederick
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Stage may be affected by ice.