Emergency responders continue to search for missing people and local police said efforts have been slowed by "sightseers who are making things worse."

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

President Trump has signed a disaster declaration for Kerr County and the Federal Emergency Management Agency is on the ground there, the Department of Homeland Security said Sunday. The death toll now stands at 78 in the wake of torrential rains and the resulting flooding in Texas.