Minor Flood
712 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.
Action Stage
706.9 ft
What Floods at Each Level
714 ft
Cottage Reserve Road NE is closed.
712.1 ft
The Emergency Spillway is overtopped.
711 ft
Boating is prohibited on the Coralville Lake Reservoir and Lake MacBride.
708 ft
The intersection of Cou Falls Road and Amana Road is closed.
707 ft
Low lying areas surrounding the lake and upstream of the lake become flooded. Amana Road is closed from Falcon Ave to Cou Falls.
702 ft
The west overlook boat ramp closes, including day use areas and beaches. Swan Lake Road is closed between Greencastle Ave and Half Moon Ave. Amana Road is closed between Falcon Ave and Blain Cemetary Road.
700 ft
Portions of Swan Lake Road, Amana Road and 140th St are closed.
693 ft
Road closure on 140th St west of Ely Road.
689 ft
Road closures along portions of Sandy Beach Road.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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About This Gauge
Get Flood Alerts for Iowa 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 Iowa River above Coralville Dam?
The Iowa River above Coralville Dam gauge is maintained by USGS (site 05453510) 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 Iowa River above Coralville Dam?
The NWS-defined flood stage for Iowa River above Coralville Dam is 712 feet. Action stage begins at 706.9 feet. Moderate flooding starts at N/A feet, and major flooding at N/A feet.
How do I get alerts when Iowa River rises?
Download StormCast free on Google Play, go to River Gauges, and add Iowa River above Coralville 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 Iowa River above Coralville Dam gauge located?
The gauge is located in Johnson County, Iowa at coordinates 41.7247°N, 91.5279°W. USGS site number: 05453510. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: US Army Corps of Engineers, Observations courtesy of U.S. Geological Survey, Observations courtesy of U.S. Army Corps of Engineers