Major Flood
21 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
19 ft
Minor Flood
15 ft
Action Stage
10 ft
What Floods at Each Level
21 ft
Water approaches structures.
20 ft
Washington Boulevard begins to flood at the Elkridge/Halethorpe border.
19 ft
Water covers the entrance park at Patapsco Valley State Park.
17 ft
A low spot near the end of Levering Avenue begins to flood.
15 ft
Water begins to cover a portion of River Road in Patapsco Valley State Park. Large portions of the park begin to flood near the playground off Gunn Road.
10 ft
Water begins to cover riverside trails in Patapsco Valley State Park.
9 ft
Water spills over the banks but no impacts are observed.
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 |
|---|---|---|
| May 27, 2018 | 24.76 ft | 29,428 cfs |
| Jul 30, 2016 | 23.78 ft | 25,900 cfs |
| Sep 7, 2011 | 21.66 ft | 23,500 cfs |
About This Gauge
USGS Site
NWS LID
ERDM2
River
Patapsco River
County
Baltimore, MD
Coordinates
39.2272°N, 76.7231°W
Get Flood Alerts for Patapsco 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 Patapsco River near Elkridge at Patapsco Valley State Park?
The Patapsco River near Elkridge at Patapsco Valley State Park gauge is maintained by USGS (site 01589035) 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 Patapsco River near Elkridge at Patapsco Valley State Park?
The NWS-defined flood stage for Patapsco River near Elkridge at Patapsco Valley State Park is 15 feet. Action stage begins at 10 feet. Moderate flooding starts at 19 feet, and major flooding at 21 feet.
How do I get alerts when Patapsco River rises?
Download StormCast free on Google Play, go to River Gauges, and add Patapsco River near Elkridge at Patapsco Valley State Park 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 Patapsco River near Elkridge at Patapsco Valley State Park gauge located?
The gauge is located in Baltimore County, Maryland at coordinates 39.2272°N, 76.7231°W. USGS site number: 01589035. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Patapsco River
On This River
Upstream: Patapsco River near Catonsville
Downstream: Patapsco River near Elkridge below Patapsco Valley State Park
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Stage may be affected by ice.