Things You Should Know About Flooding

• Flash flood season in Clark County is July through September, but floods can happen any time of the year without warning.
• Flooding is a temporary overflow of water onto land that is normally dry.
• Floods are the most common natural disaster in the United States.
• Failing to evacuate flooded areas or entering flood waters can lead to injury or death.
• Just six inches of moving water can knock you down, and one foot of moving water can sweep your vehicle away.
• The best protection during a flood is to leave the area and go to shelter on higher ground.
• Listen to EAS, NOAA Weather Radio or local alerting systems for current emergency information and instructions regarding flooding.
• Cars can be easily swept away in fast moving floodwater. Never drive through any amount of floodwater. If you cant see the lines on the street, its too dangerous to risk trying to cross the intersection or area. Take the extra five minutes and find another route.
• Flash flood waters move at very fast speeds and can roll boulders, tear out trees, destroy buildings, and obliterate bridges.
• Walls of water can reach heights of 10 to 20 feet and generally are accompanied by a deadly cargo of debris.
• The best response to any signs of flash flooding is to move immediately and quickly to higher ground.
• Do not walk, swim or drive through flood waters. Turn Around, Don’t Drown!
• Stay off bridges over fast-moving water.
• Stay inside your car if it is trapped in rapidly moving water. Get on the roof if water is rising inside the car.
• Get to the highest level if trapped in a building. Only get on the roof if necessary and once there signal for help.
• Do not climb into a closed attic to avoid getting trapped by rising floodwater.

Danger Zones

• Floods and flash floods occur within all 50 states, and Nevada is no exception. Communities particularly at risk are those located in low-lying areas, near water or downstream from a dam.

What is a Flood vs. a Flash Flood?

• Floods are the most common and widespread of all natural disasters -- except fire. Most communities in the United States can experience some kind of flooding after spring rains, heavy thunderstorms or winter snow thaws. Floods can be slow or fast rising, but generally develop over a period of days.
• Flash floods usually result from rain, snow, coastal storms, storm surges and overflows of dams and other water systems producing large amounts of rain and water within a brief period.
• Flash floods can occur slowly or quickly with little or no warning and can reach full peak in only a few minutes. 
• Cause outages, disrupt transportation, damage buildings and create landslides.

Preparing for a Flood

Staying Safe After a Flood

Help Your Community Get Ready

The media can raise awareness about floods and flash floods by providing important information to the community. Here are some suggestions:

• Disseminate emergency information, including tips on floods and flash floods. Localize the information by running the phone numbers of local emergency services offices, the American Red Cross and hospitals.
• Interview county officials and elected leaders about recent flood control projects, land use management and building codes in floodplains.
• Work with local emergency services and American Red Cross officials to prepare special reports for people with mobility impairments on what to do if an evacuation is ordered.
• Periodically inform your community of local public warning systems.

Did You Know?

• In July 1999, the 100-year flood caused some areas of Clark County to record as much as an astonishing three inches of rain in a 90-minute period.
• Since 1982, 18 people have perished in Clark County floods. With every completed flood control improvement, a greater part of the community is protected from the dangers of floodwaters.
• Individuals and business owners can protect themselves from flood losses by purchasing flood insurance through the National Flood Insurance Program. Homeowner's policies do not cover flood damage. Information is available through local insurance agents and emergency management offices.
• Flooding has caused the deaths of more than 10,000 people since 1900. Property damage from flooding now totals over $1 billion each year in the United States.
• More than 2,200 lives were lost as a result of the Johnstown, Pennsylvania flood of 1889. This flood was caused by an upstream dam failure.
• On July 31, 1976, the Big Thompson River near Denver overflowed after an extremely heavy storm. A wall of water 19 feet high roared down the Big Thompson Canyon where many people were camping; 140 people perished and millions of dollars of property were lost. 

Associated Content

• Southern Nevada Preparedness Apps
•  Flood Information Sheet (PDF)
• Protective Actions Research for Flood
• National Flood Insurance Program (NFIP)
• Flood Safety Social Media Toolkit
• National Weather Service Weather Ready Nation Spring Safety Outreach Materials
• Flood Insurance Facts
• Six Things to Know Before a Disaster (Video)
• When the Cloud Forms (Video)
• File A Flood Insurance Claim
• Your Homeowners Insurance Does Not Cover Flood (PDF)
• American Red Cross
• Worker safety recommendations