The collision forced an emergency landing by the helicopter and has now taken it out of service, Kerrville City Hall said.

Rescuers searched the Guadalupe River for survivors of the Texas flash 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.

At least 81 people, including more than two dozen children, died in the torrential downpour. Dozens more were still missing three days later.

Eyewitness Tonia Fucci recounted the destruction that followed deadly floods in Comfort, central Texas, near the Guadalupe River on July 4.