(CNN) — Torrential rains triggered flash flooding in central Texas Friday, killing at least 89 people, including dozens of children.

The Guadalupe River rose more than 20 feet in less than two hours. Located on the river is Camp Mystic, a girls summer camp in Kerr County. There are still campers and a counselor missing.

As the search continues, charities are on the ground providing aid. You can help by clicking HERE or using the form below.