The data also highlights critical risks in other areas along the Guadalupe River in Kerr County, revealing more than twice as many Americans live in flood prone areas than FEMA's maps show.

Secretary of Homeland Security Kristi Noem's voice broke as she recounted her emotional visit to Camp Mystic in Texas.

Five campers and one counselor from Camp Mystic remain unaccounted for, officials say amid mounting questions over who was responsible for monitoring the weather.

The storms that battered the Hill Country for the last four days began to lighten up, although isolated pockets of heavy rain were still possible.