Rock River at Fort Atkinson, WI
River level and flood forecast · Jefferson County
The river is 4.0 ft below flood stage (16 ft).
Flow: 1,790 cubic feet per second (USGS).
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 Rock River at Fort Atkinson to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 18 ft |
| Moderate flood stage | 17 ft |
| Flood stage | 16 ft |
| Action stage | 14.5 ft |
| Record crest (June 15, 2008) | 20.9 ft |
What floods at each level
From the National Weather Service, highest first.
- 20 ftNumerous roads are flooded: Highway 106 and North Shore Road southwest of Fort Atkinson, Sinnissippi Dr, Fox Hill Rd, Bark River Rd from Kutz Rd to Rock River Rd, Ralph Rd, etc. Water may cover Hwy 106 east of city. Rock River Road is flooded. Water surrounds some homes and businesses near the river along Highway 106 and at the end of Vets Lane near the intersection of Highway 106 and Blackhawk Island Road. There is widespread agricultural land flooding east of Fort Atkinson along Highway 106.
- 18.5 ftNumerous roads are flooded and closed in the Fort Atkinson area, including Rock River Road about 1 mile east of Fort Atkinson, Sinnissipi Drive, Ralph Rd, Bark River Road from Kutz Road to Rock River Road. Water surrounds some homes and businesses close to the river at the end of Vets Lane southwest of Fort Atkinson near the intersection of Highway 106 and Blackhawk Island Road.
- 17.5 ftFloodwaters partially cover low spots on Highway 106 near Rock River Park. A riverside walkway near South Water Street in downtown Fort Atkinson is closed. A few homes and businesses are surrounded by water at the end of Vets lane near the intersection of Highway 106 and Blackhawk Island Road about 1 mile southwest of Fort Atkinson. North Shore Road about 1 mile southwest of Fort Atkinson is closed. Ralph Rd impacted. Floodwaters cover fields on the east side of Fort Atkinson.
- 17 ftWater surrounds a few homes and business at the end of Vets Lane and Rock River Rd. Flooded roads: Sinissippi Drive, Vets Ln, Fox Hill Rd, Bark River Road from Kutz Road to Rock River Road, Rock River Rd from Milwaukee Ave E to Hwy 106, North Shore Rd, Ralph Rd. The river walkway in Fort Atkinson, Mechanic St boat launch, parking lot of Purdy St, yards along E Milwaukee Ave, yards northern end of Rock River Rd, yards on Rodgers St flood. Water backs up Bark River into Nature Park and parking lot.
- 16.5 ftIn the Fort Atkinson area, the following roads are impacted: Sinnissippi Drive, Bark River Road from Kutz Road to Rock River Road and E Milwaukee Ave, and Rock River Road from Highway 106 to the Fort Atkinson city limits. Water is in park land near the river in Fort Atkinson.
- 16 ftFloodwaters affect some park land and boat launches.
- 14.5 ftWater overflows the lowest river banks in Fort Atkinson flooding low lying land adjacent to the river.
Highest crests on record
- 20.9 ft — June 15, 2008
- 18.12 ft — April 22, 2013
- 17.4 ft — April 20, 2026
- 17.4 ft — September 11, 2018
- 17.33 ft — April 16, 2008
Recent crests: 17.4 ft (April 20, 2026) · 16.02 ft (July 6, 2024) · 15.21 ft (April 8, 2023) · 13.67 ft (June 17, 2022) · 14.01 ft (April 14, 2022)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (FATW3); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.