Volunteers are searching for missing people after flash flooding along the Guadalupe River swept through parts of central Texas. Ryan Logue, a Kerrville native, told CNN’s Isabel Rosales one of the challenges volunteers face is the miles of devastation that will need to be covered.

Kerr County has reported 28 adults and 15 children deceased, Travis County has counted four deaths, Kendall and Tom Green counties have confirmed one each, and the Burnet County Emergency Management coordinator said in a statement that two fatalities have been confirmed Saturday.

A desperate search for dozens of children campers continued into Sunday, after devastating floods killed at least 67 people in central Texas.At least four girls missing from a summer camp were found dead and were among at least 21 children killed in what Texas GOP Congressman Chip Roy called a “once-in-a-century flood.