Three hours and 21 minutes. That’s how much time passed from when the National Weather Service sent out its first flash flood warning for part of Kerr County to when the first flooding reports came in from low-lying water crossings.

Local officials in Kerr County continue facing public scrutiny after days of seeming to deflect questions about their preparedness and response to the July 4 flash flood that left dozens dead.

Flooding has been at the top of Texans’ minds this week, but this is not the first time that the need for flood-related measures has come up among local officials.

CBS News analysis shows there were 22 warnings sent by the National Weather Service for Kerr County and the Kerrville area, but many residents say they didn't get alerts.

At a news conference on Sunday, Governor Greg Abbott said people in Texas were used to flash flood warnings, but there was no sense of how deadly this would be. "There's no expectation of a water wall of almost 30ft high," he added.

Hundreds of children at summer campsites along the Guadalupe River in Kerr County were at risk early Friday when a catastrophic flash flood killed at