(1) Whenever in the judgment of the commissioner of environment and conservation a scenic river area previously administered as Class II or Class III has been sufficiently restored and enhanced in its natural scenic and recreational qualities, the commissioner may recommend to the general assembly that such an area be classified to a higher status (Class II raised to Class I, or Class III raised to a Class II or Class I) and thereafter administered accordingly.
(2) No scenic river area shall be managed in a manner that would: Result in the area falling into a lower class; or
(3) Be detrimental to the highest water quality classification standards determined by federal and/or state agencies.