Pacific Northwest instance of geographic region
The Pacific Northwest (PNW), sometimes referred to as Cascadia, is a geographic region in western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east. Though no official boundary exists, the most common conception includes the U.S. states of Oregon, Washington, and Idaho, and the Canadian province of British Columbia. Some broader conceptions reach north into Alaska and Yukon, south into northern California, and east into western Montana. Other conceptions may be limited to the coastal areas west of the Cascade and Coast mountains. The variety of definitions can be attributed to partially overlapping commonalities of the region's history, culture, geography, society, ecosystems, and other factors.The Northwest Coast is the coastal region of the Pacific Northwest, and the Northwest Plateau (also commonly known as "the Interior" in British Columbia and the Inland Northwest in the United States) is the inland region. The term "Pacific Northwest" should not be confused with the Northwest Territory (also known as the Great Northwest, a historical term in the United States) or the Northwest Territories of Canada. The region is sometimes referred to as Cascadia, which, depending on the borders, may or may not be the same thing as the Pacific Northwest.
The region's largest metropolitan areas are Greater Seattle, Washington, with 4 million people; Metro Vancouver, British Columbia, with 2.84 million people; and Greater Portland, Oregon, with 2.5 million people.The culture of the Pacific Northwest is influenced by the Canada–United States border, which the United States and the United Kingdom established at a time when the region's inhabitants were composed mostly of indigenous peoples. Two sections of the border—one along the 49th parallel south of British Columbia and one between the Alaska Panhandle and northern British Columbia—have left a great impact on the region. According to Canadian historian Ken Coates, the border has not merely influenced the Pacific Northwest—rather, "the region's history and character have been determined by the boundary".Geography
The Pacific Northwest is a diverse geographic region, dominated by several mountain ranges, including the Coast Mountains, the Cascade Range, the Olympic Mountains, the Columbia Mountains, and the Rocky Mountains. The highest peak in the Pacific Northwest is Mount Rainier, in the Washington Cascades, at 14,410 feet (4,392 m). Immediately inland from the Cascade Range are broad, generally dry plateaus. In the US, this region is known as the Columbia Plateau, while in British Columbia, it is the Interior Plateau, also called the Fraser Plateau. The Columbia Plateau was the scene of massive ice-age floods, and as a consequence, there are many coulees, canyons, and the Channeled Scablands. Much of the plateau, especially in eastern Washington, is irrigated farmland. The Columbia River cuts a deep and wide gorge around the rim of the Columbia Plateau and through the Cascade Range on its way to the Pacific Ocean.
Because many areas have plentiful rainfall and mild summers, the Pacific Northwest has some of North America's most lush and extensive forests, which are extensively populated with Coast Douglas fir trees, the second tallest growing evergreen conifer on earth. The region also contains specimens of the tallest trees on earth, the coast redwoods, in southwestern Oregon, but the largest of these trees are located just south of the California border in northwestern California. Coastal forests in some areas are classified as temperate rain forest.
Coastal features are defined by the interaction with the Pacific and the North American continent. The coastline of the Pacific Northwest is dotted by numerous fjords, bays, islands, and mountains. Some of these features include the Oregon Coast, Burrard Inlet, Puget Sound, and the highly complex fjords of the British Columbia Coast and Southeast Alaska. The region has one of the world's longest fjord coastlines.The Pacific Northwest contains an uncountable number of islands, many of the smaller ones being unnamed. The vast majority of such islands are located in British Columbia and Alaska. Vancouver Island is by far the largest island in the area, but other significant land masses include the Haida Gwaii, vast and remote Princess Royal Island, Prince of Wales Island and Chichagof Island. The Salish Sea located close to major populated areas contains smaller but more frequently visited and well known islands. These include Whidbey Island, Salt Spring Island, and Texada Island, along with dozens of smaller islands in the San Juan and Gulf Island chains.
The major cities of Vancouver, Portland, Seattle, and Tacoma all began as seaports supporting the logging, mining, and farming industries of the region, but have developed into major technological and industrial centers (such as the Silicon Forest), which benefit from their location on the Pacific Rim.
If defined as British Columbia, Idaho, Oregon and Washington, the Pacific Northwest has four US National Parks: Crater Lake in Oregon, and Olympic, Mount Rainier, and North Cascades in Washington. If a larger regional definition is used, then other US National Parks might be included, such as Redwood National and State Parks, Glacier Bay National Park, Wrangell–St. Elias National Park, Grand Teton National Park, and parts of Glacier National Park and Yellowstone National Park. There are several Canadian National Parks in the Pacific Northwest, including Pacific Rim National Park on the west coast of Vancouver Island, Mount Revelstoke National Park and Glacier National Park in the Selkirk Range alongside Rogers Pass, Kootenay National Park and Yoho National Park on the British Columbia flank of the Rockies, Gwaii Haanas National Park Reserve in Haida Gwaii, and the Gulf Islands National Park Reserve in the Strait of Georgia. There are numerous protected areas in British Columbia and in the United States.
Other outstanding natural features include the Columbia River Gorge, Fraser Canyon, Mount St. Helens, Malaspina Glacier, and Hells Canyon. The south-central Coast Mountains in British Columbia contain the five largest mid-latitude icefields in the world.
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