The risk of the catastrophic flooding that struck Texas Hill Country as people slept on July 4 and left at least 120 dead was potentially underestimated by federal authorities, according to an ABC News analysis of Federal Emergency Management Agency data, satellite imagery and risk modeling.

In what experts call "Flash Flood Alley," the terrain reacts quickly to rainfall steep slopes, rocky ground, and narrow riverbeds leave little time for warning.

Dick Eastland, the Camp Mystic owner who pushed for flood alerts on the Guadalupe River, was killed in last week’s deadly surge.

The deadly Texas floods have brought the state's approach to land approvals, especially in flood-prone areas, under more scrutiny.

Kerrville police officers rescued residents during deadly Texas floods, risking their lives to save others in their community.

The president has defended his administration's response to the fatal flooding amid criticism that federal assistance could've been provided more quickly.

Now, days later, four young campers and one beloved counselor are still missing. Search and rescue teams have not stopped. At least 150 people are known to be missing in Kerr County as a result of the flooding in Central Texas,