The Welsh Ministers may from time to time issue guidance to the NRBW about the exercise of its functions under sections 194 to 194D.
The guidance may in particular include guidance as to—
determining whether or not a watercourse or part of a watercourse is suitable to become or to remain a main river or a part of a main river;
what kind of publication is appropriate under section 194C(2) and (5).
The NRBW must have regard to the guidance in carrying out its functions under sections 194 to 194D.