Heavy rain sent creeks and rivers raging out of their banks in Central Texas, drowning at least one motorist and stranding others after killing four members of a San Jose, Calif., family in the western part of the state. In the central Texas Hill Country, Kerr County authorities searched for at least one person still missing after a truck was swept away by the rapidly rising Guadalupe River near Hunt. The body of a second person from the truck was found about 100 yards downstream. A third person in the truck escaped harm. The river had risen 21 feet by mid-afternoon near Hunt, destroying piers and docks at summer camps along its banks. Farther west, Cipriano Enriquez Rodriquez of San Jose told Pecos County authorities that he and four family members were driving a car with a small trailer pulled behind to Del Rio when the vehicles washed off flooded Texas 349 and into Perkins Draw late Sunday. Rodriquez's wife, son-in-law and two grandchildren drowned, officials said.