A mandatory evacuation has been issued for the south Muskogee County town of Webbers Falls.
The town, which sits on the Arkansas River, is in danger of being engulfed by record flooding.
Shelter has been set up in nearby Warner.
Flooding is wreaking havoc all along the river, including shutting down the main road between Muskogee and Fort Gibson and Muskogee and Okay.
Residents are asked to avoid flooded areas to allow emergency crews to do their jobs and not risk further complications.