South Branch Rock River at Waupun, WI
River level and flood forecast · Fond du Lac County
The river is 3.8 ft below flood stage (6 ft).
Flow: 16 cubic feet per second (USGS).
River camera
Watch the time-lapse
Camera by the U.S. Geological Survey. Most take a picture every hour, some every few minutes; many stop at night.
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Get flood alerts for this river
An email when the National Weather Service forecasts South Branch Rock River at Waupun to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 10 ft |
| Moderate flood stage | 8 ft |
| Flood stage | 6 ft |
| Action stage | 4 ft |
| Record crest (June 13, 2008) | 10.09 ft |
What floods at each level
From the National Weather Service, highest first.
- 11 ftWater 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 ftWater 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 ftWater 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 ftWater 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 ftWater 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 ftWater 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 ftWater 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 ftFloodwaters 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 ftFloodwaters affect a picnic area and park near the river. Gateway Dr. is flooded and closed.
- 5 ftGateway Dr. is flooded and closed.
- 4.5 ftWater begins to affect a low spot on Gateway Dr.
- 4 ftThere is minor lowland flooding
Highest crests on record
- 10.09 ft — June 13, 2008
- 8.66 ft — March 15, 2019
- 8.27 ft — June 9, 2008
- 8.24 ft — June 23, 2024
- 8.2 ft — June 11, 2004
Recent crests: 6.03 ft (April 16, 2026) · 6.85 ft (July 6, 2024) · 8.24 ft (June 23, 2024) · 6.28 ft (August 8, 2021) · 7.92 ft (October 2, 2019)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (WPNW3); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.