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 President and his allies have so far bristled at any suggestion that much could have been done to prevent the tragic loss of life in Texas. Trump described the flooding as a "once in every 200-year deal", even if he did suggest that "alarms" could have helped.