It may sound crazy but there are flood zones in Maricopa County even though we are in a desert. Most home insurance policies do not include flood insurance.
There are some roadways that have washes instead of bridges. These washes may only be full of water a few hours a few days of the year when we get heavy rain and flash flooding. If you encounter a flooded wash, do not attempt to drive through it. The Flood Control District of Maricopa website indicates that many cars will float in 2 feet of water. Don’t take chance, take another route or wait for the wash to be clear of water.