The Guadalupe River set a new all-time high in Hunt, Texas, this weekend after deadly floods inundated the region.

At least 81 people, including more than two dozen children, died in the torrential downpour. Dozens more were still missing three days later.

Texas Hill Country, where much of the flooding took place this time, is often referred to as “flash flood alley.” It's home to steep terrain and a lack of vegetation that creates a perfect storm for waters to rise quickly.