Nearly a decade ago, neighboring counties, Guadalupe and Comal, installed flood sirens. Nearby New Braunfels regularly tests its outdoor warning system, which is designed to alert residents to flash floods that are common in the area. But in Kerr County, officials admitted over the weekend that no such system exists.

At least 82 people are dead after heavy rain led to "catastrophic" flooding in Texas. Kerr County was hit the hardest, with at least 75 deaths, including 27 children. President Donald Trump signed a disaster declaration for the county and the Federal Emergency Management Agency is on the ground there.

Floodwaters are finally receding in Kerr County and Williamson County, Texas, revealing a landscape dramatically altered by days of relentless storms. Uprooted trees, eroded trailers and debris-strewn riverbanks now tell the story of just how powerful — and fast — this flooding took over.