The designation of a river or segment of a river and related adjacent land, pursuant to ORS § 390.855, shall not become effective until the day following the adjournment sine die of the regular session of the Legislative Assembly next following the date of the designation or that was in session when the designation was made. The Legislative Assembly by joint resolution may disapprove any such designation or a part thereof, and in that event the designation, or part thereof so disapproved, shall not become effective. [1971 c.1 § 7]