K.S.A. 13-1075

The governing body of any such municipality may for the purpose of having such levee property, or any part thereof, improved by the erection thereon of wharfs, warehouses, grain elevators, industrial establishments, docks, and such railroad facilities, as may be required, enter into a contract or lease with any person, firm or corporation for a term of not to exceed ninety-nine years for such rental and upon such conditions as in the judgment of the governing body will be to the best interest of such city.