The commissioner shall establish a grant-in-aid program for local units of government and special park districts for the acquisition, development, and maintenance of cross-country-ski trails. Grants shall be available for acquisition of trail easements but may not be used to acquire any lands in fee title. Local units of government and special park districts applying for and receiving grants under this section shall be considered to have cross-country-ski trails for one year following the expiration of their last grant. The department shall reimburse all public sponsors of grants-in-aid cross-country-ski trails based upon criteria established by the department. Prior to the use of any reimbursement criteria, a certain proportion of the revenues shall be allocated on the basis of user fee sales location.