More than 300 flooding reports have occurred across the U.S. since last Friday, with more heavy rain expected from Texas to the Mid-Atlantic.

Up to 18 inches of rain fell between Aug. 18 and Aug. 20, 2007, triggering flash floods that are still considered some of Minnesota's worst. It killed seven people and caused $179 million in damages, mostly in Winona, Fillmore and Houston counties.

Flash flooding hit a New Mexico town devastated by wildfires last year, washing away at least one home and causing gas leaks, city officials said Tuesday.