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.

With recent historic flooding, meteorologist John Burchfield is diving into the data of a warming climate and increased flood risks.

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.

These maps and charts show the scale and intensity of the Hill Country floods and highlight Camp Mystic’s proximity to high-risk flood zones.

The state leaves building zoning and permits up to the individual counties. And in most non-city counties, such as Kerr, which had 96 deaths as of Thursday due to floods, some officials tend to be lenient towards building owners with restrictions, some state leaders and environmental experts told ABC News.

President Donald Trump will head to Texas for a firsthand look at the devastation caused by catastrophic flooding that has killed at least 120 people, which the administration has characterized as a o