A retired nurse, her son and a family friend say they were lucky to survive last week's flash floods in Texas that killed more than 100 people, including many summer campers.

As hope for finding survivors dims, questions swirl around whether Camp Mystic's emergency plan was adequate. Texas doesn't approve or keep copies of such plans; camps are required to show only that they have plans in place.

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."

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.

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.

Devyn Smith clung to a tree as muddy, debris-laden water rushed beneath her. She was ripped more than 15 miles from where she and five of her family members had set camp the night before.

Virginia Gov. Glenn Youngkin (R) owns property on the Guadalupe River in Texas that was affected by the deadly July 4 floods. His family members are safe.

President Trump said he would visit Texas on July 11 as the state reels after more than 100 people have been confirmed dead in devastating flooding.