Eleven deaths have been blamed on weeks of heavy rain and flooding in Texas, where two men are missing.
More thunderstorms hit parts of Texas on Monday, flooding some roads. The National Weather Service said about 10 inches of rain fell by noon at Corpus Christi.
Two youngsters were rescued from an Arlington, Texas, drainage channel, one after floating half a mile downstream through at least three viaducts, said Fire Department Battalion Chief David Stapp. A handful of people had to be rescued from flooded homes in Laredo.
In North Little Rock, Ark., about 30 homes were evacuated Monday when heavy rain and a faulty drainage system caused flooding up to 6 feet deep in some spots.
Associated Press writer Thomas Peipert in Cedar Hill, Texas, contributed to this report.
(This version CORRECTS that oil has not yet reached Oklahoma reservoir.)