Flood in Columbia County, Wisconsin
Flood April 14, 2026 – April 21, 2026 · Columbia County, Wisconsin
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
The Wisconsin River at Portage rose to Major flood stage. Indian trail in Lake Delton area was flooded. Other roads that were flooded included River Oaks Road in the Town of Dekorra, River Shores Road in the Town of Lewiston, Levee Road, Cty V, Cty J, Wood Street, Summit St, Carroll, Conant St, Cty JV, and Thunderbird Road in the Portage area. Water up to Hwy 51 bridge over Duck Creek. Water approached cabins near river along Levee Rd, River Shores Rd, River Mills Rd. Sunset Point-Conant St were under water. Floodwaters affected homes in the Blackhawk Park area.
The wider storm
There was extensive river flooding along the Wisconsin River, Fox River, and Rock River in southern Wisconsin in April. The river levels were above normal after 5 inches of rain fell over the 5 days, and then another episode of heavy rain of 3 to 5 inches occurred on April 17th. In addition, vegetation was still fairly dormant so the grass was not able to soak up much of the rainfall.
Began near Lewiston (43.6100, -89.6600).
Source: NOAA Storm Events Database, event 1332930. Narratives are written by the National Weather Service forecast office that issued the report.
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