Flood — Jo Daviess, Illinois

2023-04-22 to 2023-04-30 · near East Dubuque, Jo Daviess, Illinois

Event narrative

Rapid snow melt across Minnesota and Wisconsin caused the Mississippi River at Dubuque Lock and Dam 11 to rise above its major flood stage of 20.5 feet during the evening hours of April 22nd. The river crested at 25.59 feet on April 27th. The river began to gradually fall but remain above major flood stage.

Wider weather episode

Significant flooding occurred on the mainstem Mississippi largely due to the record snowfall this winter in Minnesota and Wisconsin, frozen ground, rapid snowmelt during the middle of April, and saturated soils. Major flooding was observed at all sites along the Mississippi north of Keokuk Iowa and most sites saw one of their top 10 crests on record.

This flooding had numerous impacts, with many roads, businesses, homes, and people affected.

View location on OpenStreetMap → (42.5668, -90.6611)

Source: NOAA Storm Events Database, event_id 1094840. Narrative written by the NWS forecast office that issued the report.