The National Weather Service urged people to avoid travel if a flash flood warning was in place for their area.

In the survey - which sampled 1,680 U.S. adults - 52% of respondents said that most of the deaths could have been prevented if the government had been more adequately prepared. Twenty-nine percent said the deaths were unavoidable, and 19% said they didn't know.

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

Additional dangerous flash flooding incidents are likely in the coming days as high humidity, daytime heat and storm systems interact from the Atlantic Seaboard to the Plains, Gulf coast and Southwest.

Eight-year-old girls at sleep-away camp, families crammed into recreational vehicles, local residents traveling to or from work. These are some of the victims.

More than a week after deadly floods struck Central Texas, search and rescue teams are continuing to probe debris for those still missing.

Texas, crew is credited with rescuing 18 people and helping to evacuate 165 from life-threatening floodwaters.