Okla. Admin. Code § 300:40-4-5
To prevent littering, any ice chest or cooler contained within a Vessel shall seal or lock in such a way as to prevent its contents from spilling into the Scenic Rivers. No ice chest in use upon the Scenic Rivers may have a capacity larger than 52-quart.
Added at 39 Ok Reg 1213, eff 9-11-22
Amended at 40 Ok Reg 2164, eff 9-11-23