Commencement Bay

Commencement Bay. A deep-water harbor located on Puget Sound in Pierce County, Washington, it is the terminus for the Puyallup River and the site of the major industrial Port of Tacoma. The bay's shoreline, dominated by the city of Tacoma, has been a center for maritime trade, heavy industry, and significant environmental restoration efforts. Its name, given by explorer Charles Wilkes during the United States Exploring Expedition, reflects the point where his survey of Puget Sound began.

Geography and location

The bay is situated on the eastern side of the Puget Sound basin, with its head at the mouth of the Puyallup River delta. Key geographical features include the Tacoma Narrows to the northwest, which connects to the main sound, and Browns Point marking its northern entrance. The shoreline encompasses several distinct waterways, including the Thea Foss Waterway, the Hylebos Waterway, and Blair Waterway, which were extensively modified for port facilities. Adjacent landforms include Point Defiance Park on a peninsula to the west and the industrial Tideflats area to the south and east, with the Cascade Range providing a dramatic backdrop to the east.

History

The area was originally inhabited by the Puyallup people for millennia before European exploration. The bay was named in 1841 by Charles Wilkes of the United States Exploring Expedition. Significant development began with the founding of Tacoma in the late 19th century, spurred by the selection of the bay as the western terminus for the Northern Pacific Railway in 1873. This decision, championed by railroad executive Charles B. Wright, catalyzed rapid growth, transforming the shoreline with sawmills, warehouses, and docks. The Port of Tacoma was established in 1918 to manage the burgeoning maritime trade, playing a crucial role during World War II as a shipbuilding and logistics center. Historical landmarks include Old Town Tacoma and the Union Station depot.

Economy and industry

The bay is the economic engine for the South Sound region, centered on the Port of Tacoma, one of the largest container ports in North America. Major terminals handle international trade, serving global shipping lines like Maersk and alliances such as THE Alliance. Key industries include logistics, intermodal freight transport, and manufacturing, with facilities for companies like Kaiser Aluminum and Simpson Tacoma Kraft Company. The Thea Foss Waterway is a hub for maritime services and boatyards. The port complex directly competes with the nearby Port of Seattle and collaborates as part of the Northwest Seaport Alliance. Ancillary industries such as warehousing, distribution, and railroad operations for BNSF Railway and Union Pacific Railroad are extensive on the surrounding Tideflats.

Environmental issues

The bay was designated a Superfund site by the United States Environmental Protection Agency in 1983 due to severe contamination from over a century of industrial activity. Primary pollutants included heavy metals, PCBs, PAHs, and creosote from former operations of companies like the Asarco smelter and numerous lumber mills. A major, multi-decade cleanup effort, managed by the EPA and the Washington State Department of Ecology, involved dredging, capping, and natural resource damage assessments. The Commencement Bay Nearshore/Tideflats Superfund Site cleanup has been a model for large-scale urban waterway restoration, with significant habitat recovery in areas like the Hylebos Waterway and the Puyallup River estuary.

Recreation and parks

Despite its industrial core, the bay offers substantial public access and recreational space. Point Defiance Park, a 760-acre park on a peninsula, features beaches, trails, the Point Defiance Zoo & Aquarium, and Fort Nisqually. The Ruston Way waterfront trail provides scenic walking and cycling paths along the northern shore with views of Mount Rainier and Vashon Island. The Thea Foss Waterway esplanade connects downtown Tacoma to the water, passing museums like the Foss Waterway Seaport and the Tacoma Art Museum. Boating and fishing are popular, with marinas such as the Tacoma Yacht Club and public launches providing access to Puget Sound for salmon fishing and kayaking. Category:Bays of Washington (state) Category:Landforms of Pierce County, Washington Category:Port of Tacoma Category:Superfund sites in Washington (state)