A line of storms stretching from the Gulf of Mexico to the Great Lakes dumped record rainfall on parts of Texas, Oklahoma and other Plains and Midwest states.
The weekend storms spawned a tornado that damaged a Houston apartment complex and caused major flooding that forced at least 2,000 Texans from their homes.
Authorities are blaming three deaths on the storms. Two were in Oklahoma and the last was in Texas, where a man's body was found along the swollen Blanco River.
Among the worst-affected communities are Wimberley and nearby San Marcos in the Central Texas corridor between San Antonio and Austin. Many homes in those communities were damaged or destroyed.
More rain is in the forecast for Monday for a large swath of the nation's midsection.