Almost a week has passed since fast-moving floodwaters tore through the Texas Hill Country during the early morning hours of July 4, submerging roads, sweeping away structures, and turning the usually peaceful Guadalupe River into a deadly force.

Some camps in the region had to be evacuated, and local newspapers described how Camp Mystic was among those cut off from the outside world. According to a Kerr County history book, floodwaters at Camp Mystic almost reached the top of the dining hall’s stairs.

Maps show how heavy rainfall and rocky terrain helped create the devastating Texas floods that have killed more than 120 people.