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.

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

Kerr County had discussed buying such things as water gauges and sirens after previous flood disasters. But as with many rural Texas counties, cost was an issue.

Kerr County failed to secure a warning system, even as local officials remained aware of the risks and as billions of dollars were available for similar projects.

In areas that see rainfall and increased cloud cover, temperatures are expected to remain below seasonal averages into next week, providing some relief from the summer heat. However, much of central and southern Texas, areas in the recovery phase from the catastrophic flooding, will face dangerous heat instead of renewed flooding.

At least 27 campers and counselors were killed at Camp Mystic during the devastating Texas floods. Some are still missing.

Records released Tuesday show Camp Mystic met state regulations for disaster procedures, but details of the plan remain unclear.

Kerr County, Texas, flood maps reveal Camp Mystic and two others in high-risk zones The Hearst Television Data team analyzed FEMA's flood hazard data, identifying Camp Mystic, Camp La Junta and ...

ABC News’ Juju Chang is joined by former FEMA administrator Deanne Criswell to discuss the growing questions surrounding the emergency response in Texas after devastating and deadly flash flooding.