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.

After hours of waiting and praying in the attic, the water stopped rising and the family was rescued. A first responder helped Matteson, wearing a navy and pink floral dress and quilted white jacket, into the back of a car. Her family survived. Their home was not so lucky.

Residents living south of the San Saba River in San Saba County have been ordered to evacuate due to river surging.

Over 120 people have died after heavy rain pounded Kerr County, Texas, early Friday, leading to "catastrophic" flooding, the sheriff said.

A surge of deep tropical moisture returns to Texas this weekend. Here's where the risk of flash flooding is highest in the state this weekend.

The heavy showers have caused Flash Flood Warnings across Central Texas and prompted officials to close low-water crossings, roads and parks.

Downpours capable of producing flash flooding continue to bring multiple inches of rain with Flash Flood Warnings across much of the northern Hill Country.

Would a flood scale like those used for hurricanes and tornadoes have prompted different actions by Texas officals and the public before July 4th flooding?

The heavy showers have caused Flash Flood Warnings across Central Texas and prompted officials to close low-water crossings, roads and parks.