City of Evanston
Home MenuSummer Flooding Hazards
Flooding can occur anytime of the year so it's important to always be prepared in case flooding occurs in your area. Flooding can happen due to prolonged rainfall over several days, heavy rainfall on a short period of time, or melting snow that combines with rain in the winter and early spring. When the sun is shining brighter and hotter during summer, it causes more water and moisture to evaporate than the other seasons.
Know the difference between a watch and a warning:
A watch means that a flood or flash flood is possible in your area.
A warning means that flooding/flash flooding is already occurring or will occur soon in your area. Listen to a local area radio station, your local t.v. station or other social media outlets for the latest information and updates.
Flood Risks:
Flash Flooding: A flash flood is a rapid flooding of low-laying areas in less than six hours. This is caused by intense rainfall from a thunderstorm or several storms. Flash floods can also occur when there are drought-like conditions.
Levees and Dams: The U.S. has thousands of miles of leaves and dams that are designed to protect against certain level of flooding. These structures can erode and waken over time. They can also be overtopped or sometimes even fail during larger flood events.
Inundaciones (Ready.gov, Spanish version, Floods)
It takes only two feet of rushing water to carry away most vehicles. This includes pickups and SUV's. You should especially by careful while traveling by the lake as flood waters can rise quickly and often cause road closures. Pay attention to barricades and stay away from areas subject to flooding such as underpasses, bridges, beaches and low spots. Do not walk, swim or drive through flood water as they could be contaminated.
If a Flood does occur in your area
- Avoid contact with floodwater; including letting children play near floodwaters. This include when flooding occurs at the lake front. It may be contaminated with sewage.
- Avoid already flooded areas and areas that are subject to sudden flooding such as dips, low spots, canyons, washes, etc. Stay away from lakes, rivers, streams, creeks and storm drains.
- Do not attempt to cross flowing streams or water covered roads.
- If caught in a flash flood, try to get to higher ground and stay there. Six inches of fast-flowing water can knock you over and two feet will float your car.
- Turn around and find another route if you come across floodwater, rapidly rising water or barricades.
- Be prepared to evacuate quickly if directed and know your routes and destinations. If someone needs to find a shelter they can visit redcross.org/shelter.
- Check emergency kits. Replenish any items missing or that are in short supply. Keep your emergency kit ready and nearby.
- Don’t forget about your pets. Prepare a pet emergency kit for your companion animals.
After a Flood has Occurred
- Check for any structural damage that may have occurred before entering your home. If you suspect damage to water, gas, electric or sewer lines, contact authorities.
- If you have damages outside or inside your home due to flooding, file your flood insurance claim. Be sure to provide the name of your insurance company, your policy number and contact information. Take photos of any water in the house and damaged personal property. Make sure to make a detailed list of all that was damaged or lost items.
- If you reside in a building, plan before you start to make repairs within your unit. Contact your local building inspections, planning office or clerk’s office to get more information on local building requirements.
- If you do have items in your home that are damaged from flooding, remove wet contents immediately. Wet carpeting, furniture, bedding and any other items holding moisture can develop mold within 24 to 48 hours. Clean and disinfect everything touched by floodwaters.