Menomonee River at Menomonee Falls, WI
River level and flood forecast · Waukesha County
The river is 4.3 ft below flood stage (7.5 ft).
Flow: 16 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 Menomonee River at Menomonee Falls to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 10 ft |
| Moderate flood stage | 8.5 ft |
| Flood stage | 7.5 ft |
| Action stage | 6.5 ft |
| Record crest (August 10, 2025) | 8.52 ft |
What floods at each level
From the National Weather Service, highest first.
- 8.5 ftWater flows across the intersection of Grand Ave and Roman Dr and covers Grand Ave to almost Forest Dr. Water surrounds homes on Grand Ave. Water surrounds businesses on northside of Roman Dr.
- 8 ftGrand Ave near Roman Dr flooded. Back parking lots of businesses on northside of Roman Dr flooded. Paths along Menomonee River Parkway flooded.
- 7.5 ftPaths along the Menomonee River Parkway flooded.
Highest crests on record
- 8.52 ft — August 10, 2025
- 8.31 ft — June 21, 1997
- 8.12 ft — July 22, 2010
- 7.98 ft — April 15, 2026
- 7.56 ft — May 23, 2004
Recent crests: 7.98 ft (April 15, 2026) · 8.52 ft (August 10, 2025) · 6.4 ft (September 13, 2022) · 6.37 ft (August 8, 2021) · 6.32 ft (March 28, 2020)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MFSW3); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.