Severe Weather Preparedness: Flooding

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.

The Black Hills are especially vulnerable to flash floods, where steep terrain and narrow canyons can funnel heavy rain into small creeks and dry ravines, turning them into raging walls of water. Even on the prairie, normally-dry draws and low spots can fill with rushing water during very heavy rain. Being aware of the risks associated with flooding can help you protect yourself and your loved ones from potential damage and financial losses caused by flooding.

Know Your Risk and Take Action Before a Flood:

• Do your homework. Be aware of the potential flooding risks for the particular area where you live and work, including streams, drainage channels, canyons and other areas known to quickly fill with water. Know how you can safely escape from flood waters.
• Flood damage is not covered by homeowner’s policies. Flood insurance is the best way to protect your home, business, and belongings from flood damage.  The National Flood Insurance Program from FEMA can provide more information.  https://www.fema.gov/national-flood-insurance-program
• Build an emergency kit. Some items to remember are:  Flashlight and extra batteries, nonperishable food and water (three gallons per person), first-aid supplies, extra clothing, battery-powered radio, and weather radio receiver. Also don't forget special items for family members such as diapers, baby formula, prescription or essential medications, extra eyeglasses or hearing aids, and pet supplies.
• Make a family communications plan. Identify a place to meet family and friends in the event of an emergency.
• Listen to local officials and have several methods to receive warning information. Some methods may include NOAA Weather Radio, local radio and television stations, cable TV (warnings are not broadcast on satellite TV unless you are watching local stations), and text and e-mail alerts.
• Know how to shut off utilities such as electric, gas and water.
• When traveling or outdoors, check the weather forecast before starting a trip or going outside. If camping, choose a campsite away from creeks or other low-lying areas. Do not stay in areas where your only exit crosses a stream - you may become trapped by rising water.
• Understand the terms used to describe flood hazards:
  • Flood Watch means flooding is possible, but is not yet occurring.
  • Flash Flood Warning is issued when dangerous flash flooding will occur quickly.
  • Flood Warning is issued when long-term flooding is imminent or occurring.

If you see rising water or if a Flash Flood Warning is issued, get to higher ground immediately by moving away from streams! Never cross a stream when escaping flood waters. Follow evacuation instructions, but don't wait for them if you think you are in danger.

Turn Around, Don’t Drown: Do not drive into flooded areas. Two feet of rushing water can carry away most vehicles. Be especially cautious at night, when flood waters are difficult to see.

Walking or playing in flood waters is dangerous; you can be pushed over by flowing water only six inches deep!

Click here for more Flood Safety information.