On average, it takes five to seven years to develop and implement a new FEMA Flood Insurance Rate Map. As a result, many maps across the U.S. are significantly out of date, often failing to reflect current land use, urban development or evolving flood risks from extreme weather.

The catastrophic flooding in Central Texas has left more than 100 people dead, including Houston-area residents.

The data also highlights critical risks in other areas along the Guadalupe River in Kerr County, revealing more than twice as many Americans live in flood prone areas than FEMA's maps show.

Central Texas braces for more rain after deadly floods; officials warn of renewed flash flood risk in already saturated areas. Newsweek's live blog is closed.

The Texas Hill Country has been notorious for flash floods caused by the Guadalupe River. Here's why the area is called "Flash Flood Alley."

If this were a group of Hispanic girls out there, this would not be getting this type of coverage that they’re getting, no one would give a f–k,” Sade Perkins raged on

Kerr County first tried to secure $1 million for a flood warning system in 2017, but could not. Could such a system have prevented loss of life on July 4?

Gary and DeeAnn Knetsch were camping directly next to the Guadalupe River with their son, Jake Moeller, his wife, Megan and their five-year-old daughter, Harley. Gary, DeeAnn, Jake and Megan all lost their lives. Harley is still among the missing. Both families lived in Canyon Lake but have ties to the Houston and Mont Belvieu areas.