USDA river basin activities include:
(a) Cooperative river basin surveys in coordination with Federal, State, and local agencies;(b) Floodplain management assistance in coordination with the responsible State agency and involved local governments;(c) Joint investigations and reports with the Department of the Army under Pub. L. 87-639 , 76 Statute 438 (16 U.S.C. 1009 ) ; and(d) Interagency coordination of water resources activities.