Safety at the Las Vegas Wash

Even though temperatures soar and it is generally dry July through September, this period is known as the flash flood season to the Clark County Regional Flood Control District (CCRFCD).  Hot air currents cause unstable air in the Gulf of Mexico to rise rapidly, resulting in fantastic displays of lightning in our desert sky. This weather pattern causes severe thunderstorms with heavy rainfall on steep mountain slopes and armored desert surfaces. Rainwater runs off rapidly and concentrates in the urbanized areas at lower elevations.

Stormflows at Pabco Road Weir

Normal flows at Pabco Road Weir

During this flash flood season, it’s a good time to review some safety precautions.  The majority of flood-related deaths are caused by people attempting to drive through moving water.  Swift moving flood water can sweep away cars.  The CCRFCD strongly advises that children and pets be kept away from floodwater.  Floodwater can move up to 30 mph and is filled with hazardous materials such as oils, chemicals, and waste.  Do not camp or park your vehicle near washes or channels.  During a flood event, water can rise as rapidly as one foot a minute in channels and detention basins.  It is recommended that during a storm, people stay indoors, or if driving, pull over to a place higher than street level and wait for the storm to pass.

Stormflows at Demonstration Weir

How can you help?  Don’t dump in channels.  Do not dump or throw anything into washes or drainage facilities.  Even grass clippings and branches can accumulate and obstruct channels.  An obstructed channel cannot carry water and may cause flooding on adjacent properties.  Each piece of trash can contribute to flooding.  Keep drainage ways clear.  If your property is adjacent to a wash or channel, please do your part to keep the banks clear of brush and debris. 

Stormflows at Las Vegas Bay Delta

Safety is integral when visiting the Las Vegas Wash anytime of the year, not just during flash flood season.  Officials at the Clark County Wetlands Park say water in the park meets all federal standards, but that is not intended for human contact, so swimming, wading, and fishing are not allowed.  The same can be said for the Las Vegas Wash due to many safety concerns.  Swift moving water only inches deep can sweep a person off their feet, and the National Park Service identifies several common hazards facing someone in distress:

• High water adds to the power and speed of flow, making rescue attempts dangerous and difficult. 
• Cold water rapidly drains strength and affects a person’s ability to make good decisions. 
• Brush, fallen trees, and undercut rocks can injure or trap a person. 
• When water drops over an obstacle, it curls back on itself, forming a strong upstream current which can also trap a person.

Stormflows at Pabco Road Weir

Normal flows at Pabco Road Weir

A trip to the Las Vegas Wash can be educational and fun.  Remaining cautious while experiencing all the Las Vegas Wash has to offer is the best way to enjoy it fully, during flash flood season and year-round.