Wednesday: Floods and Flash Floods

The Department of Public Safety and the National Weather Service will be promoting general weather safety and emergency preparedness to Minnesotans during April 7 - 11, 2025 for Severe Weather Awareness Week.

  • One of the most common natural hazards in Minnesota. 
  • Seasonal snowmelt floods tend to develop slowly. 
  • Flash floods develop quickly during heavy rains leaving little time for preparation. 
  • Risks are greater in low-lying areas, near existing water, behind a levee or downstream from a dam.

Before a Flood

  • Buy flood insurance for your home at least 30 days ahead of flood season. 
  • Elevate basement furnaces, water heaters, and electric panels. 
  • Install check valves in sewer traps. 
  • Construct barriers or dikes if possible. 
  • Seal basement walls. 
  • Prepare for evacuation if necessary. 
    • Have a plan and inform family and neighbors. 
    • Have a “go kit” ready with valuables and important papers and enough supplies to last several days.

During a Flood - Plan

  • Listen to radio or TV for information. 
  • Be aware of streams, drainage channels and canyons. 
  • Be aware of road and bridge closures; find alternate routes. 
  • Move immediately to high ground if flood waters are near. 
  • Be prepared to evacuate on short notice.

During a Flood - Prepare

  • If you must evacuate, and time permits: 
    • Secure your home. 
    • Bring in outdoor furniture. 
    • Move essential items to an upper floor. 
    • Turn off utilities. 
  • Plan an evacuation route and inform family and neighbors of destination.

During a Flood – Don’t Drive

  • Do not walk or drive through moving water. 
  • Do not drive on flooded roads. 
  • Be aware of downed power lines.

Image of why not to drive in floods

After a Flood

  • Return home only when authorities indicate it is safe. 
  • Use caution when entering buildings. 
  • Service damaged septic tanks, cesspools, pits, and leaching systems. 
  • Clean and disinfect damaged property. 
  • Have alternate sewage/toilet capacity.

Sources For More Information on Severe Weather and Safety

How to prepare for any emergency

Four simple preparedness steps: