Although Kerr County was hit hardest by flooding, at least seven others have been confirmed dead in different parts of Texas. About 150 miles east of Camp Mystic, Travis County has confirmed at least four deaths, county spokesperson Hector Nieto told CBS News by phone Saturday night. Travis County includes the Texas capital city of Austin.

Mark Edwards, field operations manager for the nonprofit group Texas EquuSearch, deployed more than 120 trained volunteers on horseback, in ATVs and on foot to look for survivors and victims. The team included Robert Crow, a member of Tejas Vaqueros, a riding group from Houston.

Meanwhile, anguished parents waited for word on the 10 young campers still missing from Camp Mystic, which was hit hard by floodwaters.