Local agencies entering into agreements with the state shall annually prepare a work program and estimate of cost for conducting any maintenance activities necessary to carry out the project maintenance and the purposes of this chapter and shall submit the proposed program and cost estimates to the department or the Reclamation Board for review. The department or the Reclamation Board shall review the proposed program and, after receiving the comments of any other affected state agencies, the department or the Reclamation Board shall certify for reimbursement 50 percent of those costs which are found to be attributable to the maintenance of vegetative cover for wildlife, recreational, aesthetic, and scenic purposes, and may allocate funds appropriated for these purposes to local agencies which have entered into agreements with the state pursuant to this chapter.