Follow for live updates in the Texas flooding as the death toll rises to 120, as rescue operations start to shift to recovery phase

At least 120 people are dead and 173 are missing in central Texas after the Guadalupe River swelled early Friday, causing destructive flash flooding throughout Kerr County.Now, new before-and-after satellite images of several sites throughout Kerry County show the devastation caused by the floods as crews embark on a seventh day of search and rescue efforts.

Here's what to know about the deadly flooding, the colossal weather system that drove it and ongoing efforts to identify victims.

More than 111 people have died across six counties after flash flooding from heavy rain began affecting the state last week.

Richard Koons survived a flash flood on the Guadalupe River in 1987. On "Morning in America," Koons describes the merciless conditions of the river. "On that morning, there were people who could not swim that made it.

A swift-moving flood that swept through the Hill Country of Texas on Friday, killing at least 79 people and leaving many more missing, was a flash flood.

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.