Arizona State University College of Liberal Arts and 

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Flash Flooding

Flash Flooding




Safety Points (from Floods, Flash Floods and Warnings, NOAA publication)


1. Get out of areas subject to flooding. This includes dips, low spots, canyons, arroyos and washes, etc.

2. Avoid already flooded and high velocity flow areas. Do NOTcross a flooded stream on foot.

3. If driving, do NOT cross flooded crossings. Even 1" of moving water can easily move your vehicle!

4. If the vehicle stalls in moving water, abandon it immediately and seek higher ground - rapidly rising water may quickly engulf the vehicle and its occupants and sweep them away. (Remember: A vehicle doesn't have to be engulfed to be 'swept away!")

5. Be especially cautious at night when it is harder to recognize flood dangers.

6. Do not camp or park your vehicle along streams and washes, particularly during threatening conditions.



* Flash flooding waves, moving at incredible speeds, can roll boulders, tear out trees, destroy building and bridges, and scour out new channels. Killing walls of water can reach heights of 10 to 20 feet. Flash flooding is a major danger in ARIZONA. Your safety may depend on knowing how to react during a flash flood.




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Department of Geography
PO Box 870104
Tempe, AZ 85287

Phone - 480.965.7355

Fax - 480-965-8313

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