There is established for the recreational use and enjoyment of the public the Washington State Seashore Conservation Area. It shall include all lands now or hereafter under state ownership or control lying between Cape Disappointment and Leadbetter Point; between Toke Point and the South jetty on Point Chehalis; and between Damon Point and the Makah Indian Reservation and occupying the area between the line of ordinary high tide and the line of extreme low tide, as these lines now are or may hereafter be located, and, where applicable, between the Seashore Conservation Line, as established by survey of the Washington state parks and recreation commission and the line of extreme low tide, as these lines now are or may hereafter be located; and shall also include all state-owned nontrust accreted lands along the ocean: PROVIDED, That no such conservation area shall include any lands within the established boundaries of any Indian reservation.