(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. [1955 c.707 §10(4)]