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

The state leaves building zoning and permits up to the individual counties. And in most non-city counties, such as Kerr, which had 96 deaths as of Thursday due to floods, some officials tend to be lenient towards building owners with restrictions, some state leaders and environmental experts told ABC News.

Flash floods in Texas have killed at least 107 people over the Fourth of July weekend, with more than 160 still missing.

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

After catastrophic floods hit Texas' Hill Country, many are asking about preparations for the next big flood. Jason Allen spoke to Jay Banner, climatologist at University of Texas at Austin, on the banks of the Guadalupe River.

Renee Smajstrla, a 8-year-old straight-A student from Ingram, Texas, who had played a role in her school’s production of “The Wizard of Oz,” was one of the victims who died in the flash floods at Camp Mystic, her family said.

As crews search for missing people after flash floods killed at least 120 in Texas, cities across the U.S. grapple with rising flood waters.

A hydrologist explains why Texas Hill Country is known as Flash Flood Alley and how its geography and geology can lead to heavy downpours and sudden, destructive floods

Q: Is it true that if President Donald Trump hadn’t defunded the National Weather Service, the death toll in the Texas flooding would have been far lower or nonexistent? A: The Trump administration did not defund the NWS but did reduce the staff by 600 people.

A retired nurse, her son and a family friend say they were lucky to survive last week's flash floods in Texas that killed more than 100 people, including many summer campers.