Major Flood
34 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
30 ft
Minor Flood
28 ft
Action Stage
23 ft
What Floods at Each Level
41.6 ft
Flood of record from 1889.
34 ft
Flood waters begin to reach the Horner Street Bridge.
33.5 ft
Approximate level of the FEMA 0.2% Annual Chance Flood level (500-year flood).
28 ft
Unprotected areas in the vicinity of the river will flood.
26 ft
High water levels should be monitored for contunued rises.
23.5 ft
Approximate level of the FEMA 1% Annual Chance Flood level (100-year flood).
22.5 ft
Flood waters begin to reach the Coopersdale, or Laurel Avenue Bridge.
20.5 ft
Flood waters begin to reach the Fourth Avenue Bridge and the Bethlehem Steel footbridge.
19 ft
Approximate level of the FEMA 2% Annual Chance Flood level (50-year flood).
10.5 ft
Approximate level of the FEMA 10% Annual Chance Flood level (100-year flood).
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 30, 1889 | 41.6 ft | — |
| Mar 17, 1936 | 39 ft | — |
| Jul 19, 1977 | 34 ft | — |
About This Gauge
USGS Site
NWS LID
JHSP1
River
Conemaugh River
County
Cambria, PA
Coordinates
40.3414°N, 78.9261°W
Get Flood Alerts for Conemaugh 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 Conemaugh River at Johnstown?
The Conemaugh River at Johnstown gauge is maintained by USGS (site 03041029) 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 Conemaugh River at Johnstown?
The NWS-defined flood stage for Conemaugh River at Johnstown is 28 feet. Action stage begins at 23 feet. Moderate flooding starts at 30 feet, and major flooding at 34 feet.
How do I get alerts when Conemaugh River rises?
Download StormCast free on Google Play, go to River Gauges, and add Conemaugh River at Johnstown 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 Conemaugh River at Johnstown gauge located?
The gauge is located in Cambria County, Pennsylvania at coordinates 40.3414°N, 78.9261°W. USGS site number: 03041029. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Conemaugh River
On This River
Downstream: Conemaugh River at Seward
More Resources
Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey
- Stage may be affected by ice.