Lost large blue waterproof camping tarp near Arkansas River in Fort Smith with some stains.

I lost my blue camping tarp while I was setting up my tent near the Arkansas River in Fort Smith. I think I left it behind when I went out for a hike. It's a large tarp, about ten by ten feet, and is waterproof with some stains from my last camping trip. If anyone finds it, I would really appreciate getting it back!