At least 19 of the cabins at Camp Mystic were located in designated flood zones, including some in an area deemed “extremely hazardous” by the county.

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.

Texas authorities said Tuesday 87 people died in Kerr County as a result of catastrophic flooding along the Guadalupe River on the Fourth of July. Five girls and a counselor from Camp Mystic remain missing, the officials said.

Texas officials warn of more heavy rain after catastrophic flooding killed more than 80 people in the state. Follow for live updates.

Texas has identified more than $50 billion in flood control needs, but lawmakers have devoted just $1.4 billion to address them

Some 170 people are still missing throughout the state, and hopes of finding anyone else alive have diminished each passing day, with Kerr County authorities saying they haven't made a "live rescue" since the day of the flood.