Major Flood
10 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
8 ft
Minor Flood
6 ft
Action Stage
4 ft
What Floods at Each Level
11 ft
Water covers the support beams underneath the Fond du Lac St bridge and is closed. Gateway Dr. and County Park Rd. at the bridge are closed. Waters hits bridge deck of County Park Rd. Yards and basements, including walk-out basements, of some homes on Harmsen Ave. are flooded. Shaler Park and Pine St park closed.
10.5 ft
Water covers the support beams underneath the Fond du Lac St bridge and is closed. Gateway Dr. and County Park Rd. at the bridge are closed. Yards and basements, including walk-out basements, of some homes on Harmsen Ave. are flooded. Floodwaters affect roadways adjacent to the river, a park and a picnic area.
9.8 ft
Water covers the support beams underneath the Fond du Lac St bridge and is closed. Gateway Dr. and County Park Rd. at the bridge are closed. Yards and basements, including walk-out basements of some homes on Harmsen Ave. are flooded. Floodwaters affect a park, a picnic area and roadways adjacent to the river.
9.3 ft
Water covers the support beams underneath the Fond du Lac St bridge and is closed. Gateway Dr. and County Park Rd. at the bridge are closed. Yards and basements of some homes on Harmsen Ave. are flooded.
8.6 ft
Water touches the support beams underneath the Fond du Lac St bridge and is closed. Gateway Dr. and County Park Rd. at the bridge are closed.
7.5 ft
Water reaches the support beams underneath the Fond du Lac St bridge and is closed. Gateway Dr. and County Park Rd. at the bridge are closed. Floodwaters affect a park and roadways adjacent to the river. Water starts to over top the dam at Shaler Park.
7.3 ft
Water reaches the support beams underneath the Fond du Lac St bridge and is closed. Gateway Dr. and County Park Rd. at the bridge are closed. Floodwaters affect a park, a picnic area and roadways in the Waupun area.
7 ft
Floodwaters affect a park, a picnic area, and some roadways adjacent to the river. Gateway Dr. is flooded. County Park Rd (Hwy MMM) is closed at the bridge as the river flows around the north end of bridge. Shaler Park and Pine St Park closed.
6 ft
Floodwaters affect a picnic area and park near the river. Gateway Dr. is flooded and closed.
5 ft
Gateway Dr. is flooded and closed.
4.5 ft
Water begins to affect a low spot on Gateway Dr.
4 ft
There is minor lowland flooding
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 12, 2008 | 10.09 ft | 2,350 cfs |
| Mar 15, 2019 | 8.66 ft | 1,520 cfs |
| Jun 9, 2008 | 8.27 ft | — |
About This Gauge
USGS Site
NWS LID
WPNW3
River
South Branch Rock River
County
Fond du Lac, WI
Coordinates
43.6414°N, 88.7203°W
Get Flood Alerts for South Branch 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 South Branch Rock River at Waupun?
The South Branch Rock River at Waupun gauge is maintained by USGS (site 05423500) 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 South Branch Rock River at Waupun?
The NWS-defined flood stage for South Branch Rock River at Waupun is 6 feet. Action stage begins at 4 feet. Moderate flooding starts at 8 feet, and major flooding at 10 feet.
How do I get alerts when South Branch Rock River rises?
Download StormCast free on Google Play, go to River Gauges, and add South Branch Rock River at Waupun 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 South Branch Rock River at Waupun gauge located?
The gauge is located in Fond du Lac County, Wisconsin at coordinates 43.6414°N, 88.7203°W. USGS site number: 05423500. Data is provided by the U.S. Geological Survey and the National Weather Service.
On This River
Downstream: Rock River at Horicon
More Resources
Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey