SDCL § 5-2-5: Contracts permitting taking of sand and gravel from state-owned lake and river beds--Exclusive privilege prohibited.

Whenever any person shall desire to take from within or beneath the bed of any navigable river or lake or any other river or lake which is the property of the State of South Dakota any sand, gravel, or other material, he shall first enter into a contract with the commissioner upon such terms and conditions, and upon such terms of payment to the State of South Dakota as the commissioner of school and public lands may determine. No contract shall be made giving any person any exclusive privilege hereunder.