FloodZoneMap.org

Flood — Union, IL

Mar 18, 2008

Torrential rainfall amounts from 6 to 12 inches occurred over a two-day period, causing an historic flood event. A very slow-moving cold front over southwest Illinois and southeast Missouri provided the focus for prolonged heavy rainfall. A deep southwest wind flow brought subtropical moisture across the frontal zone. Two-day rainfall amounts included 11.64 inches at Anna (Union County) and 11.50 inches at Galatia (Saline County). At the Carbondale airport, the two-day total was 6.61 inches. Oth

Source: NOAA National Weather Service Storm Events Database (event 84949). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Union, IL

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

View Union County flood data →

More Flood Stories

Flash Flood1 death$30K damage

Union, IL · Jun 16, 2019

As strong solar heating destabilized the atmosphere, numerous clusters of intense thunderstorms blossomed from southeast Missouri to southwest Indiana. The main impact associated with these storms was flash flooding.

Read the full account →
Flood$500K damage

Union, IL · Jun 1, 2019

Several rivers remained above flood stage from May. On the Mississippi River, major flooding continued through the month of June. Backwater from the Mississippi kept moderate flooding going on the lowest reaches of the Ohio River as well as the Big Muddy River.

Read the full account →
Flash Flood$100K damage

Union, IL · Jun 30, 2020

Large clusters of thunderstorms during the early morning hours produced locally excessive rainfall. The storms occurred ahead of a very compact disturbance in the upper levels of the atmosphere over areas of far west central Illinois.

Read the full account →
Flood$700K damage

Union, IL · Jan 1, 2016

Flooding along parts of the Mississippi River surpassed the Great Flood of 1993. Along most other rivers, the flooding was relatively minor. The Governor of Illinois declared some counties disaster areas, including the Mississippi River counties of Alexander and Jackson.

Read the full account →