More than 160 people are still believed to be missing in Texas days after flash floods killed over 100 people during the July Fourth weekend, the state’s governor said Tuesday.

Gov. Greg Abbott says 161 people remain missing after catastrophic Central Texas flooding, as the death toll climbs to 109 and search efforts intensify.

The stunning flood that killed more than two dozen campers and counselors along a river at Camp Mystic in the Texas Hill Country was the result of extraordinary rain and walls of water. Nonetheless, experts agree that information about how a camp plans for emergencies is just as important as the lunch menu and the times to go swimming.

ABC News' Linsey Davis is on the ground in Texas and discusses the recovery efforts at Camp Mystic with Sen. Ted Cruz (R-Texas) and the devastating impact the flooding has had on the community.

One of Texas' most popular rivers flooded over the weekend and contributed to Texas' catastrophic flooding that claimed over 80 lives, including two dozen children at Camp Mystic. Here's what to know about the layout of the river and the role it played in one of the state's deadliest flash floods in modern history.