Destructive flooding triggered by unrelenting rain that rapidly overwhelmed the Guadalupe River has killed at least 81 people across central Texas.

Sally Sample Graves was a grandmother who was killed in the flooding, the BBC reported. Sarah Sample wrote that a massive wave destroyed her grandmother’s home. Sarah Sample’s father and his dog were also in the home at the time but both survived.

Young campers and a dad saving his family were among the dozens killed in the historic flash floods that tore through central Texas over the holiday weekend.