With more than 170 still missing, communities must reconcile how to pick up the pieces around a waterway that remains both a wellspring and a looming menace.

The region of Texas where flash flooding killed more than 90 people -- including dozens of campers -- is known for its tendency to experience flood emergencies.

Flash flooding is common enough around the crescent-shaped region from Dallas through the Hill Country, the area earned the nickname "Flash Flood Alley."

President Donald Trump and First Lady Melania Trump visited flood-ravaged central Texas, where 120 people were killed last weekend. Another 161 are still missing At a roundtable, Trump says he has never seen devastation like this before and describes the Guadalupe River as becoming a "monster" Their visit comes as questions mount over the response from authorities,

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