Major Flood
16 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
12 ft
Minor Flood
8 ft
Action Stage
7.5 ft
What Floods at Each Level
13 ft
Flooding begins just downstream from the Slatington Walnutport Bridge.
6 ft
Minor flooding begins downstream at Catasaqua and Hokendaqua.
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 22, 1942 | 20.6 ft | — |
| Aug 18, 1955 | 17.68 ft | 77,800 cfs |
| Sep 2, 2021 | 13.19 ft | 45,308 cfs |
About This Gauge
USGS Site
NWS LID
WNTP1
River
Lehigh River
County
Northampton, PA
Coordinates
40.7569°N, 75.6033°W
Get Flood Alerts for Lehigh 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 Lehigh River at Walnutport?
The Lehigh River at Walnutport gauge is maintained by USGS (site 01451000) 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 Lehigh River at Walnutport?
The NWS-defined flood stage for Lehigh River at Walnutport is 8 feet. Action stage begins at 7.5 feet. Moderate flooding starts at 12 feet, and major flooding at 16 feet.
How do I get alerts when Lehigh River rises?
Download StormCast free on Google Play, go to River Gauges, and add Lehigh River at Walnutport 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 Lehigh River at Walnutport gauge located?
The gauge is located in Northampton County, Pennsylvania at coordinates 40.7569°N, 75.6033°W. USGS site number: 01451000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Lehigh River
On This River
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- The above river forecast includes future rainfall. Forecast stages may be different if the rainfall does not occur.