At least 13 fatalities were reported Friday as devastating floods slammed Texas' Hill Country with water rescues taking place along the Guadalupe River, officials said.

Over 100 people have died after heavy rain pounded Kerr County, Texas, early Friday, leading to "catastrophic" flooding, the sheriff said.

Six counties reported deaths from multiple severe flood events since Friday, July 4. Also, Kerrville officials reported that a privately owned drone collided with a helicopter conducting search and rescue operations.

Gov. Greg Abbott surveyed the flood damage via helicopter Tuesday afternoon with Texas House Speaker Dustin Burrows.

Rescuers searched the Guadalupe River for survivors of the Texas floods that killed more than 100 people over the July Fourth holiday weekend, with an unknown number of people still missing. The basin area was crowded with families and campers preparing to enjoy the holiday when pounding rain brought about catastrophic flash floods just before dawn Friday.