Seattle city has over of parkland. Seattle is located between the saltwater Puget Sound (an arm of the Pacific Ocean) to the west and Lake Washington to the east. The city's chief harbor, Elliott Bay, is part of Puget Sound, which makes the city an oceanic port. To the west, beyond Puget Sound, are the Kitsap Peninsula and Olympic Mountains on the Olympic Peninsula; to the east, beyond Lake Washington and the Eastside suburbs, are Lake Sammamish and the Cascade Range. Lake Washington's waters flow to Puget Sound through the Lake Washington Ship Canal (consisting of two man-made canals, Lake Union,
Port Ludlow, Washington west side of Puget Sound. Based on per capita income, Port Ludlow ranks 16th of 522 ranked areas in the state of Washington, and the highest rank achieved in Jefferson County. Port Ludlow's location and marina facilities make it a convenient and popular port for leisure craft sailing between Puget Sound and the San Juan Islands. The United States Exploring Expedition, under Charles Wilkes, entered Puget Sound in 1841. Wilkes bestowed many patriotically American place names; at the time the sovereignty of the Oregon Country was yet to be resolved between Britain and the United States. Many of Wilkes's names