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.

Though Kerrville, a city of 25,000 that has become a hub for search and recovery work along the Guadalupe River, largely escaped the worst of the flood’s damage, some parts of the city were devastated...

The Texas flood smashed through buildings, carried away cars and ripped sturdy trees out by the roots, dropping the debris in twisted piles when the water finally ebbed.