Two barges have halted their progress down the flooding Arkansas River at Lock and Dam 16, near Webbers Falls.
The barges, which broke loose for a second time late Wednesday night, collided with the dam early Thursday afternoon without causing any obvious damage, said Muskogee County Emergency Management Director Jeff Smith.
"They both hit the dam, turned onto their sides, the first one rolled under the second one," Smith said. "The second one started taking on water and looked like it was sinking underwater and then it just rolled to the side."
Smith said that while a damage assessment was ongoing, further disaster appears to have been averted.
"Outside of the barges not making it to the dam, this was the most desirable outcome," Smith said.