FloodZoneMap.org

Flood — Waukesha, WI

Feb 9, 2001

Heavy rains, in some cases, setting new daily records across south-central and southeast Wisconsin, resulted in most rivers reaching or exceeding flood stage. Thunderstorms and cloud-to-ground lightning were reported across the southeastern counties. In addition, the heavy rains and partial snow melt of a 7 to 12 inch snow pack led to widespread flooding of farm fields, road side ditches, and other low spots. Consequently, water covered or flowed across many roads. Backed-up sewers and ice-jam

Source: NOAA National Weather Service Storm Events Database (event 5232329). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Waukesha, WI

This event is one of many recorded floods in Waukesha County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Waukesha County flood data →

More Flood Stories

Flash Flood2 deaths$17.3M damage

Waukesha, WI · Aug 6, 1998

A monumental flash flood event ravaged adjacent portions of Milwaukee and Waukesha counties during the afternoon and evening hours. For the northwest quarter of Milwaukee Co., and the northeast/ eastcentral parts of Waukesha Co., it was the second year in row (press headline -…

Read the full account →
Flash Flood1 death$25K damage

Waukesha, WI · Jun 12, 2008

A series of clusters of strong to severe storms ahead of a cold front moved east/northeast across south-central and sourtheast Wisconsin. Copious amounts of moisture were available that allowed repeated heavy rains.

Read the full account →
Flash Flood$89.0M damage

Waukesha, WI · Aug 9, 2025

A historic flash flood and record rainfall occurred over portions of the Milwaukee Metropolitan Area and Southeast WI resulting in damages in the $100s Millions.

Read the full account →
Flash Flood$9.0M damage

Waukesha, WI · Aug 9, 2025

A historic flash flood and record rainfall occurred over portions of the Milwaukee Metropolitan Area and Southeast WI resulting in damages in the $100s Millions.

Read the full account →