Flash floods are an extremely common hazard that develop in a few minutes; oftentimes they develop without visible signs of impending rain. These floods often produce a dangerous wall of roaring water that can carry debris, mud, and rocks, and sweep you off your feet before you know what’s happening.
When out in nature, it is important to identify areas that are susceptible to flooding. Flooding commonly occurs when waterways like rivers or streams overflow; this usually occurs during times of excessive rain. It can also occur when rainfall or snowmelt exceed the capacity for local drainage systems.
Flash Flood-Prone Areas
Floods tend to occur in low-lying areas near bodies of water. Typically, if you are near a river or stream, then you are in a potential flash flood area. Small streams, gullies, creeks and dry streambeds are potential areas that can flood quickly.
Flash flooding often occurs in areas where precipitation is not easily absorbed by the ground. This happens when the soil is completely saturated, or when the soil has a poor absorption ability. When water can’t be absorbed by the ground, runoff collects in gullies and streams; this runoff merges with more water and forms large volumes of fast flowing water.
If you are in an area where the soil doesn’t absorb precipitation well, then you may experience flooding. Areas on or near volcanoes often experience floods; this happens because the rocks don’t absorb water well. Flooding can also occur in high mountain ranges and in arid plains.
Any areas that have hard soil that can’t absorb water are prime areas for flooding. If you notice unusual rain in an area, then you may be in danger of experiencing a flash flood. Monsoons, tropical storms, and seasonal rains combined with a spring thaw can cause flooding in areas that are near waterways.
If you are near a waterway during a storm, keep a close eye on the water level. Quickly rising water in streams or rivers during a storm may indicate that you are in an area that is prone to flooding; this is especially true for hilly areas. Hilly areas can channel water and cause flooding without any warning; even distant rains can be channeled into one area in a short amount of time.
Southern Utah Flash Flood
Featured Image from Phillip Flores/Unsplash
