Before the floods came, Camp Mystic’s sprawling 700-acre campground was dotted with green-roofed, cobblestone cabins and rows of cypress, live oak and pecan trees. After, bed sheets tangled in broken branches. Muddy clothes, an overturned canoe and other belongings from campers remained.

An analysis of flood maps shows that several buildings, including those where children were sleeping, were in known hazard zones. A $5 million expansion in 2019 did nothing to alleviate the problem.