Check with the AHRA ranger station in Salida. They have a lost and found. There is a fair chance it was picked up by a guide and turned in to a ranger or CPW employee.
Originally Posted by AHRA
Just wanted to let everyone know to check with the Park Office (719)539-7289 in Salida if they lose gear on the Arkansas. We aquire a far amount of equipment each year with out contact info on it.
Colorado State Parks