Flash floods can occur at any time of year, but they are most common in July, August, and September. Checking the local weather forecast is advisable, but you should realize that conditions change quickly, and it is impossible to predict where heavy rain will occur.
- Avoid narrow canyons and washes during stormy weather.
- Be aware of changing weather conditions.
- Know your escape routes.
- If you’re hiking in a stream, be aware of rising water levels or stronger currents and sudden changes in water clarity.
- Educate yourself on the terrain you are entering.
- Realize that dry washes are a result of previous flash floods.
By entering a narrow canyon or wash, you are assuming a risk.
If flooding begins, seek high ground and wait for the water to go down before attempting to walk out. Do not enter a narrow canyon if storms threaten. Never camp in a wash bottom.