Major Flood
14 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
11 ft
Minor Flood
10 ft
Action Stage
8.5 ft
What Floods at Each Level
17.5 ft
Structures threatened along Hawick Street in downtown Rockton.
17 ft
Rockton Road is threatened west of Rockton.
15 ft
Hawick Street threatened near Settlers Park in Rockton.
14 ft
Low-lying structures threatened off Main Street in Rockton. Roscoe Road threatened west of Roscoe. Prairie Hill Road inundated north of Rockton.
13.5 ft
Old River Road threatened west of Roscoe Bridge.
12 ft
Multiple low-lying roads threatened along the river in Roscoe.
10.5 ft
Edgemere Terrace threatened near Roscoe.
10 ft
Low-lying structures are threatened along Edgemere Terrace near Roscoe.
9 ft
Low-lying areas of Settlers Park in Rockton are inundated.
8 ft
Water overflows low-lying banks along Edgemere Terrace near Roscoe.
7 ft
Low-lying areas of Riverside Park near Roscoe are inundated.
Impact statements from the National Weather Service, describing what typically happens at each water level.
Low-Water Impacts
2.0
Approximate stage of the 1-in-10 annual chance flow (7-day average).
What happens as water levels drop, per the National Weather Service.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Mar 24, 1975 | 15.54 ft | 30,000 cfs |
| Mar 16, 2019 | 15.13 ft | 29,500 cfs |
| Mar 21, 1904 | 14.8 ft | 28,500 cfs |
About This Gauge
Get Flood Alerts for Rock 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 Rock River at Rockton?
The Rock River at Rockton gauge is maintained by USGS (site 05437500) 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 Rock River at Rockton?
The NWS-defined flood stage for Rock River at Rockton is 10 feet. Action stage begins at 8.5 feet. Moderate flooding starts at 11 feet, and major flooding at 14 feet.
How do I get alerts when Rock River rises?
Download StormCast free on Google Play, go to River Gauges, and add Rock River at Rockton 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 Rock River at Rockton gauge located?
The gauge is located in Winnebago County, Illinois at coordinates 42.4503°N, 89.0725°W. USGS site number: 05437500. 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, Observations courtesy of U.S. Army Corps of Engineers
- River forecasts for this location take into account past and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast.