At least 120 people have died and some 173 people remain unaccounted for statewide, nearly a week after flash floods ravaged the Texas Hill Country.

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.

New human settlements constructed in recent years have made the waterway more hazardous, UT-Arlington civil engineering professor says.

Recordings provided to CBS News showed first responders asking for an emergency alert to be sent, but dispatchers delayed because they needed special authorization.

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.

Hill Country residents and volunteers on Tuesday continued picking up the pieces that the deadly waterway left behind days earlier.