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.

Search crews continued the grueling task of recovering the missing as more potential flash flooding threatened Texas Hill Country.

At least 27 campers and counselors at Camp Mystic perished in Friday's floods, with the total death toll in the floods now surpassing 100.

Federal regulators removed dozens of Camp Mystic buildings from a 100-year flood map as the camp looked to expand.

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.

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.

Camp officials across the country said they had heard from worried parents after the Texas floods. As they try to reassure them, some camps are adding more safety procedures.

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

More cabins and buildings at Camp Mystic — the tragic site of more than two dozen deaths in the Texas flood — were at risk of flooding than what the federal government had previously reported, according to new analysis from NPR,

Experts suggested that more data and education are needed as Texas and the rest of the country build in known flood plains.

Flash floods last week in Texas caused the Guadalupe River to rise dramatically, reaching three stories high in just two hours