The Department of Agriculture is authorized to enter into agreements with any agency of the United States or with any local watershed organization or organizations as may be necessary to furnish surveys, engineering and assistance in planning for works of improvement in any approved watershed in this State and for maintaining watershed works of improvement which are constructed primarily for retaining surplus rainfall. The Department may request the State Soil Conservation Districts Advisory Board to review the plans for improvement and maintenance of each watershed and to advise the Department concerning the feasibility of the respective plans and projects.