Major Flood
50 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
48 ft
Minor Flood
40 ft
Action Stage
35 ft
What Floods at Each Level
51 ft
Large amounts of property damage can be expected. Evacuation of many homes and businesses becomes necessary. Highway 60 in Smithland closes.
40 ft
Minor flooding occurs affecting mainly bottomland and surrounding and low lying areas.
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 6, 2011 | 54.83 ft | 1,064,820 cfs |
| Feb 25, 2019 | 51.83 ft | 870,234 cfs |
| Mar 12, 1997 | 51.44 ft | 832,000 cfs |
About This Gauge
Get Flood Alerts for Ohio 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 Ohio River at Smithland Lock and Dam?
The Ohio River at Smithland Lock and Dam gauge is maintained by USGS (site 03399800) 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 Ohio River at Smithland Lock and Dam?
The NWS-defined flood stage for Ohio River at Smithland Lock and Dam is 40 feet. Action stage begins at 35 feet. Moderate flooding starts at 48 feet, and major flooding at 50 feet.
How do I get alerts when Ohio River rises?
Download StormCast free on Google Play, go to River Gauges, and add Ohio River at Smithland Lock and Dam 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 Ohio River at Smithland Lock and Dam gauge located?
The gauge is located in Pope County, Illinois at coordinates 37.1583°N, 88.4261°W. USGS site number: 03399800. 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
- River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.