Flooding typically occurs when prolonged rain falls over several days, when intense rain falls over a short period of time, or when an ice or debris jam causes a river or stream to overflow onto the surrounding area. Flooding can also result from the failure of a water control structure, such as a levee or dam.
Know the Difference
- Flash Flood Watch: A flash flood watch means that flash flooding is possible in or near the watch area.
- Flash Flood Warning: A flash flood warning means that flooding is occurring in the area or will be very soon.
Preparing for a Flood
- Plan what you will do and where you will go in a flood emergency.
- Make an itemized list of personal property well in advance of a flood occurring. Photograph the interior and exterior of your home. Store the list, photos, and documents in a safe place.
- Memorize the safest and fastest route to high ground.
- If you live in a frequently flooded area, keep sandbags, plastic sheets, and lumber on hand to protect property. Install check valves in building sewer traps to prevent flood water from backing up into the drains of your home.
- Know how high your property is in relation to nearby streams and other waterways.
When a Flood Threatens
- Listen to instructions from emergency officials.
- Leave areas that are likely to flood, including dips, low spots, and floodplains.
- Store a supply of drinking water in clean bathtubs and in large containers.
- If forced to leave your home and time permits, move essential items to safe ground.
During a Flood
- Avoid areas subject to sudden flooding.
- Turn Around, Don't Drown: Do not attempt to drive over a flooded road. Stop and go another way. Roads often crumble away beneath the water.
- Never try to walk, swim, or drive through floodwater. Even six inches of fast-moving floodwater can knock you off your feet. A depth of two feet will float your car.
- Prevent children from playing in floodwaters or near culverts and storm drains. Floodwaters often contain contaminants and conceal dangerous electrical cables, holes, debris, and sharp objects.
After a Flood
- If instructed, boil drinking water before using it. If fresh food has come in contact with floodwaters, throw it out.
- Use flashlights, not lanterns or torches, to examine buildings. Flammable materials and gases may be inside.
- Do not handle or use live electrical equipment in wet areas. Electrical equipment should be checked and dried before being returned to service.
