Hope of finding survivors of the catastrophic flooding in Texas is dimming a day after the death toll surpassed 100.

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.

The Texas summer camp where children died in flooding is in an area meteorologists refer to as "Flash Flood Alley."