The Parker County Fire Marshal got a bird's eye view of the flooding thanks to the Minuteman Disaster Response.
"We can see not only buildings that are underwater, but we can see the potential for even bigger rains, where it would go," said Fire Marshal Kurt Harris.
Minuteman, a non-profit group, has flown its UAV in Oklahoma and other disaster sites in Texas.
The vantage point is like no other.
"This has given us the opportunity to see their location so we can plan better in the future how we notify, who we notify and so on," said Harris.
Many of the streets along the river that were visible Wednesday are now not.
Bob Bosley's home is surrounded by water. The road to his home is flooded out, and his dinner is whatever he catches from his neighbor's yard.
He and others in the Horseshoe Bend community have been watching the Brazos River spill over its banks and threaten their homes.
Several streets are already underwater there, and with more rain expected overnight, they're worried.