Major Flood
54 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
52 ft
Minor Flood
49 ft
Action Stage
44 ft
What Floods at Each Level
64 ft
Widespread flooding on both banks affects homes, businesses, and the water and sewage plants.
59 ft
Widespread flooding occurs on both sides of the river. Many homes and businesses are affected by high water. The Wrightsville water supply is affected by flood waters.
56 ft
Widespread flooding occurs on both sides of the river. Many homes and businesses are affected.
54 ft
Numerous homes and businesses in the Columbia and Wrightsville areas are affected by high water. The Wilton Company in Wrightsville experiences problems with high water.
52 ft
A number of residences in the Wrightsville and Columbia areas begin to be affected.
49 ft
Front Street in Wrightsville floods. Low lying areas of route 624 on the right, or west bank and along route 441 on the left, or east bank are also affected. Riverside recreation area is also inundated.
47 ft
Low lying undeveloped areas on both banks are inundated. A couple of roadways are closed.
44 ft
The right, or west bank overflows. Some roadways are affected.
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 22, 1972 | 64.54 ft | 1,080,000 cfs |
| Mar 18, 1936 | 60.73 ft | 787,000 cfs |
| Jun 1, 1889 | 58.3 ft | 630,000 cfs |
About This Gauge
USGS Site
NWS LID
MRTP1
River
Susquehanna River
County
Lancaster, PA
Coordinates
40.0544°N, 76.5311°W
Get Flood Alerts for Susquehanna 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 Susquehanna River at Marietta?
The Susquehanna River at Marietta gauge is maintained by USGS (site 01576000) 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 Susquehanna River at Marietta?
The NWS-defined flood stage for Susquehanna River at Marietta is 49 feet. Action stage begins at 44 feet. Moderate flooding starts at 52 feet, and major flooding at 54 feet.
How do I get alerts when Susquehanna River rises?
Download StormCast free on Google Play, go to River Gauges, and add Susquehanna River at Marietta 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 Susquehanna River at Marietta gauge located?
The gauge is located in Lancaster County, Pennsylvania at coordinates 40.0544°N, 76.5311°W. USGS site number: 01576000. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.