Flood Warning Issued for Columbia County, Wisconsin

Source: NOAA · Columbia County, Wisconsin

This alert is no longer in effect.

NOAA issued it on April 14, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).

Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.

A Flood Warning is in effect for Columbia County, Wisconsin, due to expected moderate flooding on the Wisconsin River at Portage, with river levels forecasted to reach 19.5 feet.

Read this weather record in 30 seconds

Record type
Flood Warning
Affected area
Columbia County, Wisconsin
Issued
April 14, 2026
Issuing authority
NWS Milwaukee/Sullivan WI

Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.

Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Columbia County, Wisconsin.

Alert Details

The National Weather Service in Milwaukee/Sullivan WI has issued a Flood Warning for Columbia, WI. This alert is effective from April 14, 2026, at 4:17 AM CDT until April 20, 2026, at 10:00 AM CDT.

Affected Areas

The warning affects Columbia County, Wisconsin, specifically the Wisconsin River at Portage. Impacts include flooding of seasonal homes, roads such as Old River Rd, W Lake Rd, Sec K Rd, Blackhawk Rd, West Lane Rd, River Oaks Rd, and Oak Knoll Dr, as well as homes in the Town of Dekorra.

What You Should Do

Turn around and do not drive through flooded roads, as most flood deaths occur in vehicles. For additional information, visit www.weather.gov.

Expected Conditions

At least moderate flooding is forecast, with the river stage at 15.9 feet and expected to rise above the flood stage of 17.0 feet to a crest of 19.5 feet on Friday morning. Bankfull stage is 12.7 feet.

Timeline

The alert is effective from April 14, 2026, at 4:17 AM CDT, and will expire on April 14, 2026, at 4:30 PM CDT, with the event ending on April 20, 2026, at 10:00 AM CDT.

Original source: NOAA Official Notice ↗

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Nationwide notices with similar length or severity timing 8

Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.

Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
A Flood Warning is in effect for Columbia County, Wisconsin, due to expected moderate flooding on the Wisconsin River at Portage, with river levels forecasted to reach 19.5 feet.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects Columbia County, Wisconsin. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.