The purpose of AS 41.21.150 - 41.21.152 is to restrict state-owned land and water described in AS 41.21.151 to use as a state park. Under AS 38.05.300 , state land, water, or land and water containing more than 640 acres may be closed to multiple use only by act of the legislature. Because the area described in AS 41.21.151 exceeds 640 acres, AS 41.21.150 - 41.21.152 are intended to provide for the closing of the described land and water to multiple use in conformity with AS 38.05.300 and its designation as a special purpose area in accord with art. VIII, Sec. 7 of the Constitution of the State of Alaska.