ORS 536.320: Limitation of powers of commission.

The Water Resources Commission shall not have power:

      (1) To interfere with, supervise or control the internal affairs of any state agency or public corporation;

      (2) To modify, set aside or alter any existing right to use water or the priority of such use established under existing laws; or

      (3) To modify or amend any standard or policy as prescribed in ORS 536.310 nor to adopt any rule or regulation in conflict therewith.