Avoiding Flash Floods In Wyoming

After the disastrous flooding that occurred in Texas this past weekend, it might be of interest to learn where flash flooding may occur where you live.

Floods like the one in Texas are rare, but nothing new. This lulls people into a false sense of security. So they begin to camp and build in these areas.

There was plenty of warning in Texas. But the area where folks lived and camped had poor cell service, and most people did not have an emergency weather radio. So nobody got the word to evacuate.

One of the worst flash floods in Wyoming's history occurred on August 1, 1985, in Cheyenne.

By late afternoon, thunderstorms began to affect Cheyenne, producing record amounts of rainfall. In approximately a 3-hour time span, six-plus inches of rain fell across the city.

The loss of property and life caused the city to construct a city-wide system that can move vast amounts of water through the area, to prevent what happened back in 1985.

But what about across Wyoming's countryside?

Each county and a few cities in Wyoming have National Weather Service and FEMA websites where potential flood zones are marked.

These are areas where, when there is enough rain or melting snow, the water will rise and rush through with nothing to stop it.

Low-lying areas and floodplains: These areas, especially those adjacent to rivers, lagoons, or lakes, are naturally prone to flooding when water levels rise.

Areas near steep terrain and narrow canyons: The typography can accelerate the flow of water, leading to rapid and dangerous flash floods.

Burn Scar Areas: Wildfires leave behind landscapes where the soil is less able to absorb water, increasing the risk of flash flooding and debris flows. These risks are highest in the first couple of years after a fire.

Areas with poor drainage: Urban areas with extensive pavement and inadequate drainage systems can experience localized flash flooding due to rapid runoff during heavy rainfall.

Areas near streams, rivers, storm drains, and culverts: These locations are susceptible to flash flooding, particularly during heavy rainfall.

Areas downstream of potential dam failures or ice jams: While unlikely, these events can cause sudden and devastating flash floods.