112-565: Umtanum Ridge Water Gap is a geologic feature in Washington state in the United States . It includes the Yakima Canyon (or " Yakima River Canyon "), and is located between the cities of Ellensburg and Yakima in central Washington . Washington State Route 821 (formerly numbered " U.S. Route 97 ") was once the main route between Ellensburg and Yakima. The old highway still runs close to
224-537: A Huguenot lieutenant accompanying him on the Vancouver Expedition . This name later came to be used for the waters north of Tacoma Narrows as well. An alternative term for Puget Sound, used by a number of Native Americans and environmental groups, is Whulge (or Whulj), an Anglicization of the Lushootseed name for Puget Sound, x̌ʷəlč , which literally means "sea, salt water, ocean, or sound". The name for
336-616: A temperate rainforest . Weeks may pass without a clear day. The western slopes of the Cascade Range receive some of the heaviest annual snowfall (in some places more than 200 inches or 5,100 millimeters water equivalent) in the country. In the rain shadow area east of the Cascades, the annual precipitation is only 6 inches (150 mm). Precipitation then increases again eastward toward the Rocky Mountains (about 120 miles (190 km) east of
448-553: A bay with numerous channels and branches; more specifically, it is a fjord system of flooded glacial valleys. Puget Sound is part of a larger physiographic structure termed the Puget Trough, which is a physiographic section of the larger Pacific Border province , which in turn is part of the larger Pacific Mountain System . Puget Sound is a large salt water estuary , or system of many estuaries, fed by highly seasonal freshwater from
560-499: A complex estuarine system of interconnected marine waterways and basins located on the northwest coast of the U.S. state of Washington . As a part of the Salish Sea , the sound has one major and two minor connections to the Strait of Juan de Fuca , which in turn connects to the open Pacific Ocean. The major connection is Admiralty Inlet ; the minor connections are Deception Pass and
672-785: A dependency on salmon from the Columbia and its tributaries. The area has been known to host megathrust earthquakes in the past, the last being the Cascadia earthquake of 1700 . The first recorded European landing on the Washington coast was by Spanish Captain Don Bruno de Heceta in 1775, on board the Santiago , part of a two-ship flotilla with the Sonora . He claimed the coastal lands up to Prince William Sound for Spain as part of their claimed rights under
784-617: A focus for war industries. While the Boeing Company produced many heavy bombers , ports in Seattle, Bremerton , Vancouver , and Tacoma were available for the manufacture of warships. Seattle was the point of departure for many soldiers in the Pacific, several of whom were quartered at Fort Lawton, which later became Discovery Park . In Eastern Washington, the Hanford Works atomic energy plant
896-688: A large region experiences strong rain shadow effects. Semi-arid conditions occur in much of Eastern Washington with the strongest rain shadow effects at the relatively low elevations of the central Columbia Plateau —especially the region just east of the Columbia River from about the Snake River to the Okanagan Highland . Thus, instead of rain forests, much of Eastern Washington is covered with dry grassland , shrub-steppe , and dunes . The average annual temperature ranges from 51 °F (11 °C) on
1008-469: A long period, Tacoma had large smelters where gold, silver, copper, and lead ores were treated. Seattle was the primary port for trade with Alaska and the rest of the country, and for a time, it possessed a large shipbuilding industry. The region around eastern Puget Sound developed heavy industry during the period including World War I and World War II , and the Boeing company became an established icon in
1120-425: A low-pressure cyclone system takes over in the north Pacific Ocean. The air spiraling inward in a counter-clockwise fashion causes Washington's prevailing winds to come from the southwest, and bring cool and overcast weather and a predictably wet season . The term " Pineapple Express " is used colloquially to describe atmospheric river events, where repeated storm systems are directed by this persistent cyclone from
1232-504: A period of heavy tremors and small eruptions, the north face of Mount St. Helens slid off in the largest landslide in recorded history before erupting violently , destroying a large part of the top of the volcano. The eruption flattened the forest up to 20 km north of the volcano , killed 57 people, flooded the Columbia River and its tributaries with ash and mud, and blanketed large parts of Washington eastward and other surrounding states in ash, making day look like night. Washington
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#17330859308201344-402: A preliminary assessment of the risks and opportunities presented given the possibility of a rise in global temperatures and their effects on Washington state. Rainfall in Washington varies dramatically going from east to west. The Olympic Peninsula's western side receives as much as 160 inches (4,100 mm) of precipitation annually, making it the wettest area of the 48 conterminous states and
1456-867: A result of north–south compression. On its way to join the Columbia River, the Yakima River cuts from the Kittitas Valley southward through four major ridges formed by this compression: the Manastash Ridge, the Umtanum Ridge, the Yakima Ridge , and the Ahtanum Ridge to reach the Yakima Valley. The highest ridge through which the Yakima flows, the Umtanum Ridge, rises to 983 meters (3225 feet) within 1 km of
1568-503: A total volume of 26.5 cubic miles (110 km ) at mean high water. The average volume of water flowing in and out of Puget Sound during each tide is 1.26 cubic miles (5.3 km ). The maximum tidal currents, in the range of 9 to 10 knots , occurs at Deception Pass. Water flow through Deception Pass is approximately equal to 2% of the total tidal exchange between Puget Sound and the Strait of Juan de Fuca. The size of Puget Sound's watershed
1680-439: A varied range of bird species. This range includes raptors, shorebirds, woodland birds, grassland birds, ducks, and others. There have also been a large number of species introduced to Washington, dating back to the early 18th century, including horses and burros. The channel catfish , lamprey , and sturgeon are among the 400 known freshwater fishes . Along with the Cascades frog, there are several forms of snakes that define
1792-590: Is 12,138 sq mi (31,440 km ). "Northern Puget Sound" is frequently considered part of the Puget Sound watershed, which enlarges its size to 13,700 sq mi (35,000 km ). The USGS uses the name "Puget Sound" for its hydrologic unit subregion 1711, which includes areas draining to Puget Sound proper as well as the Strait of Juan de Fuca, the Strait of Georgia, and the Fraser River . Significant rivers that drain to "Northern Puget Sound" include
1904-482: Is an extremely important business throughout much of Eastern Washington, as the soil is highly productive and irrigation , aided by dams along the Columbia River, is fairly widespread. The spread of population in Eastern Washington is dominated by access to water, especially rivers. The main cities are all located alongside rivers or lakes; most of them are named after the river or lake they adjoin. Farther east,
2016-499: Is at Deception Pass along a line from West Point on Whidbey Island, to Deception Island, then to Rosario Head on Fidalgo Island . The third entrance is at the south end of the Swinomish Channel , which connects Skagit Bay and Padilla Bay . Under this definition, Puget Sound includes the waters of Hood Canal , Admiralty Inlet, Possession Sound , Saratoga Passage , and others. It does not include Bellingham Bay , Padilla Bay,
2128-611: Is attributed to a variety of issues, including human population growth, pollution, and climate change. Because of this population decline, there have been changes to the fishery practices, and an increase in petitioning to add species to the Endangered Species Act . There has also been an increase in recovery and management plans for many different area species. The causes of these environmental issues are toxic contamination, eutrophication (low oxygen due to excess nutrients), and near shore habitat changes. On May 22, 1978,
2240-511: Is home to numerous species of marine invertebrates, including sponges , sea anemones , chitons , clams , sea snails , limpets , crabs , barnacles , starfish , sea urchins , and sand dollars . Dungeness crabs ( Metacarcinus magister ) occur throughout Washington waters, including Puget Sound. Many bivalves occur in Puget Sound, such as Pacific oysters ( Crassostrea gigas ) and geoduck clams ( Panopea generosa ). The Olympia oyster ( Ostreola conchaphila ), once common in Puget Sound,
2352-487: Is the most topographically prominent mountain in the contiguous U.S. Washington is a leading lumber producer, the largest producer of apples, hops, pears, blueberries, spearmint oil, and sweet cherries in the U.S., and ranks high in the production of apricots, asparagus, dry edible peas, grapes, lentils, peppermint oil, and potatoes. Livestock, livestock products, and commercial fishing—particularly of salmon, halibut, and bottomfish —are also significant contributors to
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#17330859308202464-464: Is the northwesternmost state of the contiguous United States . It borders Idaho to the east, bounded mostly by the meridian running north from the confluence of the Snake River and Clearwater River (about 117°02'23" west), except for the southernmost section where the border follows the Snake River. Oregon is to the south, with the Columbia River forming the western part and the 46th parallel forming
2576-648: Is used not just for the body of water but also the Puget Sound region centered on the sound. Major cities on the sound include Seattle , Tacoma , Olympia , and Everett . Puget Sound is also the second-largest estuary in the United States, after Chesapeake Bay in Maryland and Virginia . In 1792, George Vancouver gave the name "Puget's Sound" to the waters south of the Tacoma Narrows , in honor of Peter Puget ,
2688-505: The 13th-most populous state, with more than 7.8 million people. The majority of Washington's residents live in the Seattle metropolitan area , the center of transportation, business, and industry on Puget Sound , an inlet of the Pacific Ocean consisting of numerous islands, deep fjords and bays carved out by glaciers. The remainder of the state consists of deep temperate rainforests in
2800-504: The 49th parallel as the international boundary west from Lake of the Woods to the Rocky Mountains . Resolution of the territorial and treaty issues west to the Pacific was deferred until a later time. In 1819, Spain ceded its rights north of the 42nd parallel to the United States. Negotiations with Great Britain over the next few decades failed to settle upon a compromise boundary and
2912-624: The 49th parallel , and then via marine boundaries through the Strait of Georgia , Haro Strait , and Strait of Juan de Fuca , with the Canadian province of British Columbia to the north. Washington is part of a region known as the Pacific Northwest , a term which always refers to at least Washington and Oregon, and may or may not include some or all the following, depending on the user's intent: Idaho, western Montana , northern California , British Columbia, and Alaska . The high mountains of
3024-499: The Blue Mountains and the eastern sides of the Cascades. Mammals native to the state include the bat , black bear , bobcat , cougar , coyote , deer , elk , gray wolf , hare , moose , mountain beaver , muskrat , opossum , pocket gopher , rabbit , raccoon , river otter , skunk , and tree squirrel . Because of the wide range of geography, the state of Washington is home to several different ecoregions, which allow for
3136-435: The Blue Mountains . The state of Washington has a temperate climate. The eastern half of Washington has a semi-arid to warm-summer mediterranean climate , while the western side of Washington as well as the coastal areas of the state have a cool oceanic climate or warm-summer mediterranean climate. Major factors determining Washington's climate include the large semi-permanent low pressure and high pressure systems of
3248-462: The Cascade Range run north-south, bisecting the state. In addition to Western Washington and Eastern Washington , residents call the two parts of the state the "Westside" and the "Eastside", "Wet side" and "Dry side", or "Timberland" and "Wheatland", the latter pair more commonly in the names of region-specific businesses and institutions. These terms reflect the geography, climate, and industry of
3360-494: The Chimacum Valley [ ceb ] , in the northeast Olympic Peninsula , melted, allowing the lake's water to rapidly drain north into the marine waters of the Strait of Juan de Fuca, which was rising as the ice sheet retreated. As icebergs calved off the toe of the glacier, their embedded gravels and boulders were deposited in the chaotic mix of unsorted till geologists call glaciomarine drift. Many beaches about
3472-694: The Nooksack , Dungeness , and Elwha Rivers . The Nooksack empties into Bellingham Bay, the Dungeness and Elwha into the Strait of Juan de Fuca. The Chilliwack River flows north to the Fraser River in Canada. Tides in Puget Sound are of the mixed type with two high and two low tides each tidal day. These are called Higher High Water (HHW), Lower Low Water (LLW), Lower High Water (LHW), and Higher Low Water (HLW). The configuration of basins, sills, and interconnections cause
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3584-573: The Oregon Trail , the overland emigration route to the west, get established for thousands of emigrants in the following decades. Whitman provided medical care for the Native Americans, but when Indian patients—lacking immunity to new, "European" diseases—died in striking numbers, while at the same time many white patients recovered, they held "medicine man" Marcus Whitman personally responsible, and executed Whitman and twelve other white settlers. This
3696-661: The Oregon boundary dispute was highly contested between Britain and the United States. Disputed joint occupancy by Britain and the U.S. lasted for several decades. With American settlers pouring into Oregon Country , Hudson's Bay Company , which had previously discouraged settlement because it conflicted with the fur trade, reversed its position in an attempt to maintain British control of the Columbia District . Fur trapper James Sinclair , on orders from Sir George Simpson , Governor of
3808-595: The San Juan Islands is heavily inhabited by killer , gray, and humpback whales. In Eastern Washington, the flora is vastly different. Tumbleweeds and sagebrush dominate the landscape throughout large parts of the countryside. Russian olives and other trees are common alongside riverbanks; however, apart from the riversides, large swaths of Eastern Washington have no naturally existing trees at all (though many trees have been planted and are irrigated by people, of course). A wider variety of flora can be found in both
3920-433: The Swinomish Channel . Puget Sound extends approximately 100 miles (160 km) from Deception Pass in the north to Olympia in the south. Its average depth is 450 feet (140 m) and its maximum depth, off Jefferson Point between Indianola and Kingston , is 930 feet (280 m). The depth of the main basin, between the southern tip of Whidbey Island and Tacoma , is approximately 600 feet (180 m). In 2009,
4032-525: The Tacoma Narrows , and the Main Basin , which is further subdivided into Admiralty Inlet and the Central Basin. Puget Sound's sills, a kind of submarine terminal moraine , separate the basins from one another, and Puget Sound from the Strait of Juan de Fuca. Three sills are particularly significant—the one at Admiralty Inlet which checks the flow of water between the Strait of Juan de Fuca and Puget Sound,
4144-618: The Treaty of Tordesillas , which they maintained made the Pacific a "Spanish lake" and all its shores part of the Spanish Empire. Soon thereafter, the smallpox epidemic of the 1770s devastated the Native American population. In 1778, British explorer Captain James Cook sighted Cape Flattery , at the entrance to the Strait of Juan de Fuca , but Cook did not realize the strait existed. It
4256-562: The Yakima River Valley became known for its apple orchards, while the growth of wheat using dry farming techniques became particularly productive. Heavy rainfall to the west of the Cascade Range produced dense forests, and the ports along Puget Sound prospered from the manufacturing and shipping of lumber products, particularly the Douglas fir . Other industries that developed in the state included fishing, salmon canning and mining. For
4368-615: The double-crested cormorant ( Phalacrocorax auritus ). Puget Sound is home to a non-migratory and marine-oriented subspecies of great blue herons ( Ardea herodias fannini ). Bald eagles ( Haliaeetus leucocephalus ) occur in relative high densities in the Puget Sound region. Puget Sound has been home to many Indigenous peoples, such as the Lushootseed-speaking peoples , as well as the Twana , Chimakum , and Klallam , for millennia. The earliest known presence of Indigenous inhabitants in
4480-579: The spiny dogfish ( Squalus acanthias ). There are about 28 species of Sebastidae (rockfish), of many types, found in Puget Sound. Among those of special interest are copper rockfish ( Sebastes caurinus ), quillback rockfish ( S. maliger ), black rockfish ( S. melanops ), yelloweye rockfish ( S. ruberrimus ), bocaccio rockfish ( S. paucispinis ), canary rockfish ( S. pinniger ), and Puget Sound rockfish ( S. emphaeus ). Many other fish species occur in Puget Sound, such as sturgeons , lampreys , various sharks , rays , and skates . Puget Sound
4592-788: The tidal range to increase within Puget Sound. The difference in height between the Higher High Water and the Lower Low Water averages about 8.3 feet (2.5 m) at Port Townsend on Admiralty Inlet, but increases to about 14.4 feet (4.4 m) at Olympia, the southern end of Puget Sound. Puget Sound is generally accepted as the start of the Inside Passage . Important marine flora of Puget Sound include eelgrass ( Zostera marina ) and various kelp , important kelps include canopy forming bull kelp ( Nereocystis luetkeana ). and edible kelps like kombu ( Saccharina latissima ) Among
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4704-515: The western grebe ( Aechmophorus occidentalis ); loons such as the common loon ( Gavia immer ); auks such as the pigeon guillemot ( Cepphus columba ), rhinoceros auklet ( Cerorhinca monocerata ), common murre ( Uria aalge ), and marbled murrelet ( Brachyramphus marmoratus ); the brant goose ( Branta bernicla ); seaducks such as the long-tailed duck ( Clangula hyemalis ), harlequin duck ( Histrionicus histrionicus ), and surf scoter ( Melanitta perspicillata ); and cormorants such as
4816-585: The "deep freeze" winters of 1883–1884, 1915–1916, 1949–1950, and 1955–1956, among others. During these events, Western Washington experienced up to 6 feet (1.8 m) of snow, sub-zero (−18 °C) temperatures, three months with snow on the ground, and lakes and rivers frozen over for weeks. Seattle's lowest officially recorded temperature is 0 °F (−18 °C) set on January 31, 1950, but low-altitude areas approximately three hours away from Seattle have recorded lows as cold as −48 °F (−44 °C). The Southern Oscillation greatly influences weather during
4928-547: The 1990s. The region has been home to many established tribes of indigenous peoples for thousands of years. They are notable for their ornately carved welcome figures, canoes, long houses and masks. Prominent among their industries were salmon fishing and, notably among the Makah , whale hunting. The peoples of the Interior had a different subsistence-based culture based on hunting, food-gathering and some forms of agriculture, as well as
5040-503: The 2010s and 17.2 in 2022 with the COVID-19 pandemic . It is the largest ferry operator in the United States. Over the past 30 years, as the human population of the region has increased, there has been a correlating decrease in various plant and animal species which inhabit Puget Sound. The decline has been seen in numerous populations including forage fish , salmonids, bottom fish, marine birds , harbor porpoise , and orcas . The decline
5152-573: The 49th parallel to the United States in the Oregon Treaty on June 15, 1846. In 1836, a group of missionaries, including Marcus Whitman , established several missions and Whitman's own settlement Waiilatpu, in what is now southeastern Washington state, near present-day Walla Walla County , in the territory of both the Cayuse and the Nez Perce Indian tribes. Whitman's settlement would in 1843 help
5264-479: The 49th parallel until the Strait of Georgia . Vague wording in the treaty left the ownership of the San Juan Islands in doubt; during the so-called Pig War , both nations agreed to a joint military occupation of the islands. Kaiser Wilhelm I of the German Empire was selected as an arbitrator to end the dispute, with a three-man commission ruling in favor of the United States in 1872. The border established by
5376-547: The Canada–US border. The melting retreat of the Vashon Glaciation eroded the land, creating a drumlin field of hundreds of aligned drumlin hills. Lake Washington and Lake Sammamish (which are ribbon lakes ), Hood Canal , and the main Puget Sound basin were altered by glacial forces. These glacial forces are not specifically "carving", as in cutting into the landscape via the mechanics of ice/glaciers, but rather eroding
5488-627: The HBC's subsidy operation, the Puget Sound Agricultural Company was established in part to procure resources and trade, as well as to further establish British claim to the region. Missionaries J.P. Richmond and W.H. Wilson were attending Fort Nisqually for two years by 1840. British ships, such as the Beaver , exported foodstuffs and provisions from Fort Nisqually, and would eventually export Puget Sound lumber, an industry that would soon outpace
5600-681: The Hudson's Bay Company, led some 200 settlers from the Red River Colony west in 1841 to settle on Hudson Bay Company farms near Fort Vancouver . The party crossed the Rockies into the Columbia Valley , near present-day Radium Hot Springs , British Columbia, then traveled south-west down the Kootenai River and Columbia River. Despite such efforts, Britain eventually ceded all claims to land south of
5712-604: The Idaho border). The Olympic mountains and Cascades compound this climatic pattern by causing orographic lift of the air masses blown inland from the Pacific Ocean, resulting in the windward side of the mountains receiving high levels of precipitation and the leeward side receiving low levels. This occurs most dramatically around the Olympic Mountains and the Cascade Range. In both cases, the windward slopes facing southwest receive high precipitation and mild, cool temperatures. While
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#17330859308205824-520: The Lushootseed language, dxʷləšucid , is derived from the root word √ləš , an alternative name for Puget Sound. The USGS defines Puget Sound as all the waters south of three entrances from the Strait of Juan de Fuca . The main entrance at Admiralty Inlet is defined as a line between Point Wilson on the Olympic Peninsula , and Point Partridge on Whidbey Island . The second entrance
5936-482: The Olympic and Cascade Mountain watersheds. The mean annual river discharge into Puget Sound is 41,000 cubic feet per second (1,200 m /s), with a monthly average maximum of about 367,000 cubic feet per second (10,400 m /s) and minimum of about 14,000 cubic feet per second (400 m /s). Puget Sound's shoreline is 1,332 miles (2,144 km) long, encompassing a water area of 1,020 square miles (2,600 km ) and
6048-656: The Oregon Treaty and finalized by the arbitration in 1872 remains the boundary between Washington and British Columbia . The growing population of Oregon Territory north of the Columbia River formally requested a new territory. As a result of the Monticello Convention , held in present-day Cowlitz County , the U.S. Congress passed legislation to create Washington Territory . It was signed into law by President Millard Fillmore on March 2, 1853. The boundary of Washington Territory initially extended farther east than
6160-431: The Pacific coast to 40 °F (4 °C) in the northeast. The lowest temperature recorded in the state was −48 °F (−44 °C) in Winthrop and Mazama . The highest recorded temperature in the state was 120 °F (49 °C) at Hanford on June 29, 2021. Both records were set east of the Cascades. Western Washington is known for its mild climate, considerable fog, frequent cloud cover, long-lasting drizzles in
6272-411: The Puget Sound lowlands are known for clouds and rain in the winter, the western slopes of the Cascades receive larger amounts of precipitation, often falling as snow at higher elevations. Mount Baker , near the state's northern border, is one of the snowiest places in the world. In 1999, it set the world record for snowfall in a single season—1,140 inches (95 ft; 29 m). East of the Cascades,
6384-472: The Puget Sound region is between 14,000 BCE to 6,000 BCE. Dispatched in an attempt to locate the fabled Northwest Passage , British Royal Navy captain George Vancouver anchored on May 19, 1792, on the shores of Seattle , explored Puget Sound, and claimed it for Great Britain on June 4 the same year, naming it for one of his officers, Lieutenant Peter Puget . He further named the entire region; New Georgia , after King George III . After 1818 Britain and
6496-401: The Puget Sound region. The most recent glacial period , called the Fraser Glaciation , had three phases, or stades . During the third, or Vashon Glaciation , a lobe of the Cordilleran Ice Sheet , called the Puget Lobe, spread south about 15,000 years ago, covering the Puget Sound region with an ice sheet about 3,000 feet (910 m) thick near Seattle, and nearly 6,000 feet (1,800 m) at
6608-420: The Sound display glacial erratics , rendered more prominent than those in coastal woodland solely by their exposed position; submerged glacial erratics sometimes cause hazards to navigation. The sheer weight of glacial-age ice depressed the landforms, which experienced post-glacial rebound after the ice sheets had retreated. Because the rate of rebound was not synchronous with the post-ice age rise in sea levels,
6720-465: The United States Congress, the 1878 constitution is an important historical document that shows the political thinking of the time; it was used extensively during the drafting of Washington state's 1889 constitution, the one and only official Constitution of the State of Washington. Washington became the 42nd state of the United States on November 11, 1889. Early prominent industries in the new state included agriculture and lumber. In Eastern Washington,
6832-424: The United States, which both claimed the Oregon Country , agreed to "joint occupancy", deferring resolution of the Oregon boundary dispute until the 1846 Oregon Treaty . Puget Sound was part of the disputed region until 1846, after which it became US territory. American maritime fur traders visited Puget Sound in the early 19th century. An Hudson's Bay Company expedition led by James McMillan in late 1824
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#17330859308206944-400: The area. During the Great Depression , a series of hydroelectric dams were constructed along the Columbia River as part of a project to increase the production of electricity. This culminated in 1941 with the completion of the Grand Coulee Dam , the largest concrete structure in the United States and the largest dam in the world at its construction. During World War II, the state became
7056-455: The basalt to maintain a relative level. This view is supported by the significant meanders found in the canyon today; when a river has meanders , they tend to be preserved in rock as the river eats into a rising anticline. Washington (U.S. state) Washington , officially the State of Washington , is a state in the Pacific Northwest region of the United States. It is often referred to as Washington state to distinguish it from
7168-400: The bed of what is now Puget Sound filled alternately with fresh and with sea water. The upper level of the lake-sediment Lawton Clay now lies about 120 feet (37 m) above sea level. The Puget Sound system consists of four deep basins connected by shallower sills. The four basins are Hood Canal , west of the Kitsap Peninsula , Whidbey Basin, east of Whidbey Island, South Sound , south of
7280-409: The climate becomes less arid, with annual rainfall increasing as one goes east to 21.2 inches (540 mm) in Pullman, near the Washington–Idaho border. The Okanogan Highlands and the rugged Kettle River Range and Selkirk Mountains cover much of the state's northeastern quadrant. The Palouse southeast region of Washington was grassland that has been mostly converted into farmland, and extends to
7392-454: The cold season. During the El Niño phase, the jet stream enters the U.S. farther south through California, therefore late fall and winter are drier than normal with less snowpack. The La Niña phase reinforces the jet stream through the Pacific Northwest, causing Washington to have more rain and snow than average. In 2006, the Climate Impacts Group at the University of Washington published The Impacts of Climate change in Washington's Economy ,
7504-443: The confluence with the Snake River on July 9, 1811, and erected a pole and a notice claiming the territory for Great Britain and stating the intention of the North West Company to build a trading post at the site. Britain and the United States agreed to what has since been described as "joint occupancy" of lands west of the Continental Divide to the Pacific Ocean as part of the Anglo–American Convention of 1818 , which established
7616-519: The contiguous 48 states. Western Washington also is home of the Olympic Mountains , far west on the Olympic Peninsula , which support dense forests of conifers and areas of temperate rainforest . These deep forests, such as the Hoh Rainforest , are among the only rainforests in the continental United States. While Western Washington does not always experience a high amount of rainfall as measured in total inches of rain per year, it does consistently have more rainy days per year than most other places in
7728-419: The country. Eastern Washington —the part of the state east of the Cascades—has a relatively dry climate, in distinct contrast to the west side. It includes large areas of semiarid steppe and a few truly arid deserts in the rain shadow of the Cascades; the Hanford reservation receives an average annual precipitation of 6 to 7 inches (150 to 180 mm). Despite the limited amount of rainfall, agriculture
7840-408: The current state of Washington. Residents of Washington (known as "Washingtonians") and the Pacific Northwest simply refer to the state as "Washington", and the nation's capital "Washington, D.C.", "the other Washington", or simply "D.C." The 9,300-year-old skeletal remains of Kennewick Man , one of the oldest and most complete human remains found in North America, were discovered in Washington in
7952-414: The dominant fur trading market and drive the early Puget Sound economy. The first organized American expedition took place under the helm of Commander Charles Wilkes , whose exploring party sailed up Puget Sound in 1841. The first permanent American settlement on Puget Sound was Tumwater , founded in 1845 by Americans who had come via the Oregon Trail . The decision to settle north of the Columbia River
8064-518: The eastern part of the Oregon–Washington border. During Washington's partition from Oregon, the original plan for the border followed the Columbia River east until the confluence with the Snake, and then would have followed the Snake River east; this was changed to keep Walla Walla 's fertile farmland in Washington. To the west of Washington lies the Pacific Ocean. Its northern border lies mostly along
8176-591: The edge of the Juan de Fuca Plate are being subducted under the North American Plate . There has not been a major subduction zone earthquake here since the magnitude nine Cascadia earthquake ; according to Japanese records, it occurred on January 26, 1700. Lesser Puget Sound earthquakes with shallow epicenters , caused by the fracturing of stressed oceanic rocks as they are subducted, still cause great damage. The Seattle Fault cuts across Puget Sound, crossing
8288-523: The fledgling United States. American captain Robert Gray (for whom Grays Harbor County is named) then discovered the mouth of the Columbia River. He named the river after his ship, the Columbia . Beginning in 1792, Gray established trade in sea otter pelts. The Lewis and Clark Expedition entered the state on October 10, 1805. Explorer David Thompson , on his voyage down the Columbia River, camped at
8400-606: The land on both sides of the Cascades. From the Cascade Mountains westward, Western Washington has a mostly Mediterranean climate , with mild temperatures and wet winters, autumns and springs, and relatively dry summers. The Cascade Range has several volcanoes , which reach altitudes significantly higher than the rest of the mountains. From north to south, these major volcanoes are Mount Baker , Glacier Peak , Mount Rainier , Mount St. Helens , and Mount Adams . All are active volcanoes. Mount Rainier—the tallest mountain in
8512-510: The landscape from melt water of the Vashon Glacier creating the drumlin field. As the ice retreated, vast amounts of glacial till were deposited throughout the Puget Sound region. The soils of the region, less than ten thousand years old, are still characterized as immature. As the Vashon glacier receded a series of proglacial lakes formed, filling the main trough of Puget Sound and inundating
8624-1313: The marine mammals species found in Puget Sound are harbor seals ( Phoca vitulina ). Orca ( Orcinus orca ), or "killer whales" are famous throughout the Sound, and are a large tourist attraction. Although orca are sometimes seen in Puget Sound proper they are far more prevalent around the San Juan Islands north of Puget Sound. Many fish species occur in Puget Sound. The various salmonid species, including salmon , trout , and char are particularly well-known and studied. Salmonid species of Puget Sound include chinook salmon ( Oncorhynchus tshawytscha ), chum salmon ( O. keta ), coho salmon ( O. kisutch ), pink salmon ( O. gorbuscha ), sockeye salmon ( O. nerka ), sea-run coastal cutthroat trout ( O. clarki clarki ), steelhead ( O. mykiss irideus ), sea-run bull trout ( Salvelinus confluentus ), and Dolly Varden trout ( Salvelinus malma malma ). Common forage fishes found in Puget Sound include Pacific herring ( Clupea pallasii ), surf smelt ( Hypomesus pretiosus ), and Pacific sand lance ( Ammodytes hexapterus ). Important benthopelagic fish of Puget Sound include North Pacific hake ( Merluccius productus ), Pacific cod ( Gadus macrocelhalus ), walleye pollock ( Theragra chalcogramma ), and
8736-460: The most prominent reptiles and amphibians. Coastal bays and islands are often inhabited by plentiful amounts of shellfish and whales. There are five species of salmon that ascend the Western Washington area, from streams to spawn. Puget Sound Puget Sound ( / ˈ p juː dʒ ɪ t / PEW -jit ; Lushootseed : x̌ʷəlč IPA: [ˈχʷəlt͡ʃ] WHULCH ) is
8848-520: The national capital , both named after George Washington (the first U.S. president ). Washington borders the Pacific Ocean to the west, Oregon to the south, Idaho to the east, and shares an international border with the Canadian province of British Columbia to the north. Olympia is the state capital , and the most populous city is Seattle . Washington is the 18th-largest state , with an area of 71,362 square miles (184,830 km ), and
8960-409: The north Pacific Ocean, the continental air masses of North America, and the Olympic and Cascade mountains. In the spring and summer, a high-pressure anticyclone system dominates the north Pacific Ocean, causing air to spiral out in a clockwise fashion. For Washington, this means prevailing winds from the northwest bring relatively cool air and a predictably dry season . In the autumn and winter,
9072-584: The north coast of Washington and the San Juan Islands, essentially equivalent to NOAA's "Northern Puget Sound" subdivision described above. Kruckeberg uses the term "Puget Sound and adjacent waters". Kruckeberg's 1991 text, however, does not reflect the 2009 decision of the United States Board on Geographic Names to use the term Salish Sea to refer to the greater maritime environment. Continental ice sheets have repeatedly advanced and retreated from
9184-478: The one at the entrance to Hood Canal (about 175 ft or 53 m below the surface), and the one at the Tacoma Narrows (about 145 ft or 44 m). Other sills that present less of a barrier include the ones at Blake Island , Agate Pass , Rich Passage , and Hammersley Inlet . The depth of the basins is a result of the Sound being part of the Cascadia subduction zone , where the terranes accreted at
9296-458: The present Canada-U.S. border. Since each new advance and retreat of ice erodes away much of the evidence of previous ice ages, the most recent Vashon phase has left the clearest imprint on the land. At its maximum extent the Vashon ice sheet extended south of Olympia to near Tenino , and covered the lowlands between the Olympic and Cascade mountain ranges. About 14,000 years ago the ice began to retreat. By 11,000 years ago it survived only north of
9408-461: The present state, including what is now the Idaho Panhandle and parts of western Montana, and picked up more land to the southeast that was left behind when Oregon was admitted as a state; the creation of Idaho Territory in 1863 established the final eastern border. A Washington state constitution was drafted and ratified in 1878, but it was never officially adopted. Although never approved by
9520-630: The region were ceded in the early 19th century through a series of treaties. The Spanish signed the Adams–Onís Treaty of 1819, and the Russians the Russo-American Treaty of 1824 and 1825 . The Oregon Question remained contested between the United Kingdom and the United States until the 1846 Oregon Treaty established the border between British North America and the United States along
9632-469: The river through the canyon, with Interstate 82 (which replaced the old highway) currently carrying most traffic between Ellensburg and Yakima on large bridges nearby. The Umtanum Ridge Water Gap was designated a National Natural Landmark in 1980. The landmark is characterized by a series of steep-sided ridges in the Columbia River basalt which are cut through axially by the Yakima River. A water gap
9744-499: The river, which lies at about 470 meters (1542 feet) in elevation at the closest point. This unusual juxtaposition (rivers cutting through ridges rather than flowing through apparently more favorable routes) is an example of geologic precedence . The ancient Yakima River is believed to have been there, flowing southward above the relatively flat basalt layers. As the layers compressed, the anticlines slowly rose. The river continued to follow its historic course, cutting downward through
9856-634: The southern lowlands. Glacial Lake Russell was the first such large recessional lake. From the vicinity of Seattle in the north the lake extended south to the Black Hills , where it drained south into the Chehalis River . Sediments from Lake Russell form the blue-gray clay identified as the Lawton Clay. The second major recessional lake was Glacial Lake Bretz . It also drained to the Chehalis River until
9968-596: The southern tip of Bainbridge Island and under Elliott Bay . To the south, the existence of a second fault, the Tacoma Fault , has buckled the intervening strata in the Seattle Uplift. Typical Puget Sound profiles of dense glacial till overlying permeable glacial outwash of gravels above an impermeable bed of silty clay may become unstable after periods of unusually wet weather and slump in landslides. The United States Geological Survey (USGS) defines Puget Sound as
10080-435: The state of Washington and the city of Washington, D.C., led to renaming proposals during the statehood process for Washington in 1889, including David Dudley Field II 's suggestion to name the new state "Tacoma"; these proposals failed to garner support. Washington, D.C.'s, own statehood movement in the 21st century has included a proposal to use the name "State of Washington, Douglass Commonwealth", which would conflict with
10192-544: The state's economy. Washington ranks second only to California in wine production. Manufacturing industries in Washington include aircraft, missiles, shipbuilding, and other transportation equipment, food processing, metals, and metal products, chemicals, and machinery. The state was formed from the western part of the Washington Territory , which was ceded by the British Empire in the Oregon Treaty of 1846. It
10304-485: The state's land area, mostly west of the northern Cascades. Approximately two-thirds of Washington's forested area is publicly owned, including 64 percent of federal land. Common trees and plants in the region are camassia , Douglas fir, hemlock, penstemon , ponderosa pine, western red cedar , and many species of ferns. The state's various areas of wilderness offer sanctuary, with substantially large populations of shorebirds and marine mammals. The Pacific shore surrounding
10416-505: The state— is 50 miles (80 km) south of the city of Seattle, from which it is prominently visible. The U.S. Geological Survey considers 14,411-foot-tall (4,392 m) Mount Rainier the most dangerous volcano in the Cascade Range, due to its proximity to the Seattle metropolitan area , and most dangerous in the continental U.S. according to the Decade Volcanoes list. It is also covered with more glacial ice than any other peak in
10528-417: The term Salish Sea was established by the United States Board on Geographic Names as the collective waters of Puget Sound, the Strait of Juan de Fuca, and the Strait of Georgia . Sometimes the terms "Puget Sound" and "Puget Sound and adjacent waters" are used for not only Puget Sound proper but also for waters to the north, such as Bellingham Bay and the San Juan Islands region. The term "Puget Sound"
10640-456: The territory and founded New Market, now Tumwater , in 1846. They settled in Washington to avoid Oregon 's black exclusion law , which prohibited African Americans from entering the territory while simultaneously prohibiting slavery . After them, many more settlers, migrating overland along the Oregon Trail, wandered north to settle in the Puget Sound area. Spanish and Russian claims to
10752-466: The territory was to be named "Columbia", for the Columbia River and the Columbia District , but Kentucky representative Richard H. Stanton found the name too similar to the District of Columbia (the national capital, itself containing the city of Washington), and proposed naming the new territory after President Washington. Washington is the only U.S. state named after a president. Confusion between
10864-475: The tropical Pacific regions a great distance into the Pacific Northwest. Western Washington is very cloudy during much of fall, winter, and early spring. Seattle averages the least sunshine hours of any major city in the United States. Despite Western Washington's marine climate similar to many coastal cities of Europe, there are exceptions such as the "Big Snow" events of 1880, 1881, 1893, and 1916, and
10976-464: The waters of the San Juan Islands or anything farther north. Another definition, given by NOAA , subdivides Puget Sound into five basins or regions. Four of these (including South Puget Sound ) correspond to areas within the USGS definition, but the fifth, called "Northern Puget Sound" includes a large additional region. It is defined as bounded to the north by the international boundary with Canada, and to
11088-582: The west by a line running north from the mouth of the Sekiu River on the Olympic Peninsula. Under this definition, significant parts of the Strait of Juan de Fuca and the Strait of Georgia are included in Puget Sound, with the international boundary marking an abrupt and hydrologically arbitrary limit. According to Arthur Kruckeberg, the term "Puget Sound" is sometimes used for waters north of Admiralty Inlet and Deception Pass, especially for areas along
11200-523: The west; mountain ranges in the west, center, northeast, and far southeast; and a semi-arid basin region in the east, center, and south, given over to intensive agriculture. Washington is the second most populous state on the West Coast and in the Western United States, after California . Mount Rainier , an active stratovolcano , is the state's highest elevation at 14,411 feet (4,392 meters), and
11312-771: The winter and warm, temperate summers. The eastern region, which does not benefit from the general moderating effect of the Pacific Ocean, occasionally experiences extreme climate. Arctic cold fronts in the winter and heat waves in the summer are not uncommon. In the Western region, temperatures have reached as high as 118 °F (48 °C) in Maple Valley during the June 2021 heat wave , and as low as −6 °F (−21 °C) in Longview , and even -8 F (-22 C) in Sammamish . Forests cover about half
11424-462: The workplace. In 1950, Seattle's first black representative for the state's legislature was elected. At the 1970 U.S. census , the black population grew to 7.13% of the total population. In 1970, the state was one of only four U.S. states to have been providing legal abortions before the 1973 Supreme Court decision in Roe v. Wade which loosened abortion laws nationwide. On May 18, 1980, following
11536-453: Was admitted to the Union as the 42nd state in 1889. One of the wealthiest and most socially liberal states in the country, Washington consistently ranks among the top states for highest life expectancy and employment rates. It was one of the first states (alongside Colorado ) to legalize medicinal and recreational cannabis , was among the first states to introduce same-sex marriage , and
11648-511: Was admitted to the union in 1889 as part of the Enabling Act , and the regions borders have since remained unchanged. The Washington State Ferries (WSF) are a state-run ferry system that connects the larger islands of Puget Sound the Washington mainland, and the Olympic and Kitsap Peninsulas. Its vessels carry both passengers and vehicular traffic. The system averaged 24.3 million passengers in
11760-527: Was called the Whitman massacre in 1847. This event triggered the Cayuse War between settlers and Indians. Fort Nisqually , a farm and trading post of the Hudson's Bay Company and the first European settlement in the Puget Sound area, was founded in 1833. Black pioneer George Washington Bush and his Caucasian wife, Isabella James Bush, from Missouri and Tennessee , respectively, led four white families into
11872-737: Was cut by the Yakima River through anticlines named " Manastash Ridge " and " Umtanum Ridge ". These anticlines are part of the Yakima Fold Belt near the western edge of the Columbia River Plateau . The great basalt flows of the Columbia Basin and of the Ellensburg Formation, in some places over 5000 meters (17,000 feet) thick, have been folded into ridges ( anticlines ) and valleys ( synclines ) running roughly east–west as
11984-506: Was depleted by human activities during the 20th century. There are ongoing efforts to restore Olympia oysters in Puget Sound. In 1967, an initial scuba survey estimated that were "about 110 million pounds of geoducks" (pronounced "gooey ducks") situated in Puget Sound's sediments. Also known as "king clam", geoducks are considered to be a delicacy in Asian countries. There are many seabird species of Puget Sound. Among these are grebes such as
12096-507: Was first non-Indigenous group to enter Puget Sound since George Vancouver in 1792. The expedition went on to reach the Fraser River , first again to reach the lower Fraser since Fraser himself in 1808. The first non-Indigenous settlement in the Puget Sound area was Fort Nisqually , a fur trade post of the Hudson's Bay Company (HBC) built in 1833. Fort Nisqually was part of the HBC's Columbia District , headquartered at Fort Vancouver . In 1838,
12208-557: Was made in part because one of the settlers, George Washington Bush , was considered black and the Provisional Government of Oregon banned the residency of mulattoes but did not actively enforce the restriction north of the river. In 1853 Washington Territory was formed from part of Oregon Territory . In 1888 the Northern Pacific railroad line reached Puget Sound, linking the region to eastern states. Washington State
12320-593: Was not discovered until Charles William Barkley , captain of the Imperial Eagle , sighted it in 1787. The straits were further explored by Spanish explorers Manuel Quimper in 1790 and Francisco de Eliza in 1791, and British explorer George Vancouver in 1792. The British–Spanish Nootka Convention of 1790 ended Spanish claims of exclusivity and opened the Northwest Coast to explorers and traders from other nations, most notably Britain and Russia as well as
12432-494: Was one of only four states to have provided legal abortions on request before Roe v. Wade in 1973. Washington voters also approved a 2008 referendum on the legalization of physician-assisted suicide , making it one of 10 states to have legalized the practice. Washington was named after President George Washington by an act of the United States Congress during the creation of Washington Territory in 1853;
12544-457: Was opened in 1943 and played a major role in the construction of atomic bombs . After the end of World War II, and with the beginning of the civil rights movement , the state's growing Black or African American population's wages were 53% above the national average. The early diversification of Washington through the Great Migration led to successful efforts at reducing discrimination in
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