A Christian girls' summer camp in central Texas said on Monday that at least 27 campers and counselors were among those who perished in the catastrophic flooding over the July 4 weekend, while emergency responders still searching for dozens of missing people faced the prospect of more heavy rains and thunderstorms.

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.