"Emma Schmitz Marine Preserve" is defined as those tidelands owned by the city of Seattle and the water column above those tidelands down to 4.5 feet below MLLW at Emma Schmitz city park, bounded on the south by a line projected along the north edge of SW Oregon Street and bounded on the north by a line projected west-southwest from the high tide line at 122°24'26.5" W, 47°33'53.5" N.