Oregon Revised Statutes Water Resources: Irrigation, Drainage, Flood Control, Reclamation § 537.746

(1) The Water Resources Commission may by rule establish a system of credits that may be used to offset the potential interference with hydraulically connected surface waters caused by ground water withdrawals within the Deschutes River Basin to account for projects performed in the basin that make water available for mitigation.

(2) A person proposing a project that makes water available for mitigation may apply to the Water Resources Department for approval of the project and a preliminary finding as to the amount of mitigation credits available, based on the amount of water made available by the project. Projects approved by the department shall comply with all other applicable provisions of law, including relevant portions of ORS 390.835, and may not result in injury to existing water rights.

(4) The commission may by rule provide for the recognition or establishment of mitigation banks to facilitate transactions among the holders of mitigation credits and persons who desire to acquire mitigation credits. The mitigation credits may be assigned by the person creating the project to another person or a mitigation bank.

(5) The Water Resources Department shall prepare an annual report on the implementation and management of the system of mitigation credits established by subsections (1) to (4) of this section.