Oregon Revised Statutes Agriculture § 568.552

(a) To plan, construct, maintain, manage, administer or control any works of improvement for flood prevention or for the conservation, development, utilization or disposal of water upon lands within their respective districts upon obtaining the consent of the landowner as defined in ORS 568.210, and the land occupier as defined in ORS 568.210, of such lands.

(b) To enter into written agreements to furnish financial or other aid to any agency, governmental or otherwise, or any landowner as defined in ORS 568.210, or land occupier as defined in ORS 568.210, or both of them, of lands within the district, for flood prevention or for the conservation, development, utilization or disposal of water within their respective districts.

(c) To manage, as agent, or to take over, by purchase, lease, or otherwise any flood prevention, drainage, irrigation or agricultural water management project or any combination thereof, undertaken by the United States or any of its agencies, or by this state or any of its agencies.