A huge swirling vortex large enough to swallow a boat opened up in Lake Texoma after floodwater started rushing into the Dension Dam spillway. It's approximately 8 feet wide, as sources say.
In this video, which was taken by a flying drone equipped with a video camera from the Army Corps of Engineers, you can see the vortex up close, as well as from the point of view of a person standing from a walkway atop a dam.
This vortex is sucking in a large amount of water at a time to an exit point that helps stabilize the water levels in this floodwater reservoir.
The vortex is reportedly still there as the flooding continues.