Wash. Admin. Code § 220-306-040
This area is at the Columbia River mouth, bounded on the west by a line running northeast/southwest between the red lighted Buoy #4 (46°13'35"N. lat., 124°06'50"W. long.) and the green lighted Buoy #7 (46°15'09"N. lat., 124°06'16"W. long.); on the east by the Buoy #10 line, which bears north/ south at 357° true from the south jetty at 46°14'00"N. lat., 124°03'07"W. long. to its intersection with the north jetty; on the north by a line running northeast/southwest between the green lighted Buoy #7 to the tip of the north jetty (46°15' 48"N. lat., 124°05'20"W. long.) and then along the north jetty to the point of intersection with the Buoy #10 line; and on the south by a line running northeast/southwest between the red lighted Buoy #4 and the tip of the south jetty (46°14'03"N. lat., 124°04'05"W. long.), and then along the south jetty to the point of intersection with the Buoy #10 line.
Wash. Admin. Code § 220-306-040