Eight years ago, in the aftermath of yet another river flood in the Texas Hill Country, officials in Kerr County debated whether more needed to be done to build a warning system along the banks of the Guadalupe River.
A series of summer camps along the river were often packed with children. For years, local officials kept them safe with a word-of-mouth system: when floodwaters started raging, upriver camp leaders warned those downriver of the water surge coming their way.