Section 390.318 - Preparation of development and management plan; content of plan(1) The State Parks and Recreation Department, in cooperation with units of local government that have lands along the Willamette River within their respective boundaries, shall prepare a plan for the development and management of the Willamette River Greenway as described in ORS 390.314. Such plan may be prepared for segments of the Willamette River and may be submitted as segments for approval under ORS 390.322. Such plan shall specify the boundaries of the Willamette River Greenway and the lands and interests in land situated within such boundaries to be acquired in the development of such greenway. There shall be included within the boundaries of the Willamette River Greenway all lands situated within 150 feet from the ordinary low water line on each side of each channel of the Willamette River and such other lands along the Willamette River as the department and units of local government consider necessary for the development of such greenway; however, the total area included within the boundaries of such greenway shall not exceed, on the average, 320 acres per river mile along the Willamette River. The Willamette River Greenway shall also include all islands and all state parks and recreation areas situated along the Willamette River; however, for the purposes of computing the maximum acreage of lands within such greenway, the acreage of lands situated on such islands and within such state parks and recreation areas shall be excluded.(2) The plan prepared pursuant to subsection (1) of this section, shall depict, through the use of descriptions, maps, charts and other explanatory materials:(a) The boundaries of the Willamette River Greenway.(b) The boundaries of lands acquired or to be acquired as state parks and recreation areas under ORS 390.338.(c) The lands and interests in lands acquired or to be acquired by units of local government under ORS 390.330 to 390.360.(d) Lands within the Willamette River Greenway for which the acquisition of a scenic easement, as provided in ORS 390.332, is sufficient for the purposes of such greenway.(3) The plan shall include the location of all known subsurface mineral aggregate deposits situated on lands within the boundaries of the Willamette River Greenway.1973 c.558 §3; 1989 c.904 §19