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."

Nearly a week after floodwaters swept away more than a hundred lives, Texas officials are facing heated questions over how much was – or was not – done in the early morning hours of Friday as a wall of water raced down the Guadalupe River.

Flash floods surged through in the middle of the night, but many local officials appeared unaware of the unfolding catastrophe, initially leaving people near the river on their own.

Despite officials urging civilians to stay away, volunteers have joined the search for missing people and the cleanup on the Guadalupe River.

Authorities confirmed Wednesday that 120 people have died in the central Texas floods. Follow for live updates.

Satellite images are providing a clearer picture of the devastation brought by the deadly flooding in Central Texas over the July Fourth weekend.  More than 100 people were killed and over 160 remained missing as of Tuesday evening,

Aidan Heartfield was on the phone with his dad when their family’s cabin was swept away in the Texas floods. A team is searching for any signs of Heartfield.

A Kerrville-area river authority executed a contract for a flood warning system that would have been used to help with emergency response, local officials said.