(1) As used in this part, “department” means the department of natural resources.

    (2) The department shall administer an adopt-a-river program to remove litter from rivers and riverbanks within state parks and state recreation areas. The program shall include public informational activities, but shall be directed primarily toward encouraging and facilitating the involvement of volunteer groups in litter cleanup work and assisting volunteer groups in selecting specific river or stream segments for cleanup activities.

    (3) The department may promulgate rules as necessary to implement the adopt-a-river program.

    (4) The department may enter into agreements with volunteer groups to implement the adopt-a-river program. Agreements with volunteer groups shall include, but are not limited to, all of the following:

    (a) Identification of the designated river or stream segment. The volunteer group may request a specific segment of the river or stream it wishes to adopt, subject to the approval of the state park or recreation area manager or supervisor. The department shall assist volunteer groups to select sections of a river or stream and to identify any necessary permits or other authorizations, in cooperation with affected federal, state, and local management agencies, nonprofit organizations, and private landowners.

    (b) Specification of the duties of the volunteer group, which shall include both of the following:

    (i) Removal of litter along the designated river or stream segment at least once each year.

    (ii) Compliance with any rules related to the program that are adopted by the department.