2007 Flood

A 100-year storm event devastated parts of southeastern Minnesota from August 18th to 20th, 2007.  The probability that a 100-year storm event (7.47 inches in 24 hours) will occur in a given year is only 1%.  Portions of Winona, Fillmore and Houston Counties received 18 inches of rain, a 500-year storm event with a 0.2% probability of occurring in a given year.

Flooding caused by the storm destroyed roads, railroads, driveways, homes and businesses and claimed the lives of seven people.  Residents in Stockton, MN were taking refuge on their roof tops due to the high water which had come out of the banks of Garvin Brook and Stockton Creek.  Throughout SE MN many roads were closed, streams were re-routed to new channels, mudslides covered roads and buildings, debris was clogging bridges and culverts, and wells were contaminated.

The cost of fixing roads, bridges, houses, sewer systems, streambanks, and crop and property damage was estimated to be upwards of $200 million.  The storm warranted six counties to be considered in a state of emergency.  After the storm, local, state, and federal agencies got to work to begin restoration efforts.  State and Federal funds were utilized on many projects.  Winona County SWCD partnered with the City of Minnesota City and the Natural Resource Conservation Service (NRCS) to restore and armor Garvin Brook streambanks which had been severely damaged during the flood and undermined or destroyed property owner’s garages and septic systems.

Each year it seems that storm intensity and duration increases, another devastating 100-year or 500-year storm event could be seen again in our lifetime.  With improvements made following the 2007, we are better prepared for the next event.

Images of Minnesota City before, during and after streambank stabilization work completed in cooperation with Winona County SWCD.