Search teams plodded through mud-laden riverbanks and flew aircraft over the flood-stricken landscape of central Texas for a fourth day on Monday, looking for dozens of people still missing from a disaster that has claimed at least 78 lives.

Chloe Childress, a counselor at Camp Mystic, died during the flooding in Hunt, Texas, according to a representative of her high school.

Camp Mystic, a Christian summer camp for girls ages 7 to 17, is located along the Guadalupe River in Hunt, Texas-a community now at the epicenter of a deadly flood emergency. At least six people have died in what Governor Greg Abbott called "devastating flooding" across the Hill Country and Concho Valley.