Flash floods surged through in the middle of the night, but many local officials appeared unaware of the unfolding catastrophe, initially leaving people near the river on their own.

Texas state officials inspected Camp Mystic and certified it had a disaster plan in place two days before floods swept through the Christian girls camp in the Hill Country last weekend, killing at least 27 campers and counselors.

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.

Virginia Wynne Naylor, 8, was at Camp Mystic, a girls' summer camp with cabins along the river in a rural part of Kerr County, when the floods hit on July 4. Her family confirmed her death in a statement, referring to her as Wynne.

Kerr County is reeling from deadly July 4th flooding, with 43 deaths and 27 girls from Camp Mystic missing, prompting evacuations and intense search efforts.