peninsula
A peninsula is a landform that extends from a mainland and is only connected to land on one side. Peninsulas exist on each continent. The largest peninsula in the world is the Arabian Peninsula.
Etymology
The word ''peninsula'' derives , . T ...
Puget Sound
Puget Sound ( ; ) is a complex estuary, estuarine system of interconnected Marine habitat, marine waterways and basins located on the northwest coast of the U.S. state of Washington (state), Washington. As a part of the Salish Sea, the sound ...
from
Seattle
Seattle ( ) is the most populous city in the U.S. state of Washington and in the Pacific Northwest region of North America. With a population of 780,995 in 2024, it is the 18th-most populous city in the United States. The city is the cou ...
, and contains
Olympic National Park
Olympic National Park is a national park of the United States located in Washington, on the Olympic Peninsula. The park has four regions: the Pacific coastline, alpine areas, the west-side temperate rainforest, and the forests of the drier e ...
. It is bounded on the west by the
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...
, the north by the
Strait of Juan de Fuca
The Strait of Juan de Fuca (officially named Juan de Fuca Strait in Canada) is a body of water about long that is the Salish Sea's main outlet to the Pacific Ocean. The Canada–United States border, international boundary between Canada and the ...
, and the east by
Hood Canal
Hood Canal is a fjord-like body of water that lies south of Admiralty Inlet in Washington State that some consider to be the western lobe and one of the five main basins of Puget Sound.Cape Alava, the westernmost point in the
contiguous United States
The contiguous United States, also known as the U.S. mainland, officially referred to as the conterminous United States, consists of the 48 adjoining U.S. states and the District of Columbia of the United States in central North America. The te ...
, and Cape Flattery, the northwesternmost point, are on the peninsula. Comprising about , the Olympic Peninsula contained many of the last unexplored places in the contiguous United States. It remained largely unmapped until Arthur Dodwell and Theodore Rixon mapped most of its topography and timber resources between 1898 and 1900.
Geography
Clallam and Jefferson Counties, as well as the northern parts of
Grays Harbor
Grays Harbor is an estuarine bay located north of the mouth of the Columbia River, on the southwest Pacific coast of Washington state, in the United States. It is a ria, which formed at the end of the last ice age, when sea levels flooded the ...
and Mason Counties, are on the peninsula. The Kitsap Peninsula, bounded by the Hood Canal and Puget Sound, is an entirely separate peninsula and is not connected to the Olympic Peninsula.
From Olympia, the state capital,
U.S. Route 101
U.S. Route 101, or U.S. Highway 101 (US 101), is a major north–south highway that traverses the states of California, Oregon, and Washington on the West Coast of the United States. It is part of the United States Numbered Highway Syst ...
runs along the Olympic Peninsula's eastern, northern, and western shorelines.
The Olympic mountain range sits in the center of the Olympic Peninsula. This range is the second largest in Washington State. Its highest peak is Mt. Olympus.
A major effort called the Wild Olympics campaign is under way to protect additional wilderness areas on the Olympic Peninsula, protect salmon streams under the Wild and Scenic River Act and provide a means for Olympic National Park to offer to buy land adjacent to the Park from willing sellers.
Climate
Most of the peninsula has an
oceanic climate
An oceanic climate, also known as a marine climate or maritime climate, is the temperate climate sub-type in Köppen climate classification, Köppen classification represented as ''Cfb'', typical of west coasts in higher middle latitudes of co ...
, or ''Cfb'' under the
Köppen climate classification
The Köppen climate classification divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (te ...
. Most populated areas, however, have a warm-summer Mediterranean climate, or ''Csb''.
The Olympic Peninsula is home to temperate rain forests, including the Hoh, Queets Rain Forest, and Quinault. Rain forest vegetation is concentrated primarily in the western part of the peninsula, as the interior mountains create a
rain shadow
A rain shadow is an area of significantly reduced rainfall behind a mountainous region, on the side facing away from prevailing winds, known as its leeward side.
Evaporated moisture from body of water, bodies of water (such as oceans and larg ...
effect in areas to the northeast, resulting in a much drier climate in those locales.
Lyre
The lyre () (from Greek λύρα and Latin ''lyra)'' is a string instrument, stringed musical instrument that is classified by Hornbostel–Sachs as a member of the History of lute-family instruments, lute family of instruments. In organology, a ...
Dungeness
Dungeness (, ) is a headland on the coast of Kent, England, formed largely of a shingle beach in the form of a cuspate foreland. It shelters a large area of low-lying land, Romney Marsh. Dungeness spans Dungeness Nuclear Power Station, the ham ...
Potlatch
A potlatch is a gift-giving feast practiced by Indigenous peoples of the Pacific Northwest Coast of Canada and the United States,Harkin, Michael E., 2001, Potlatch in Anthropology, International Encyclopedia of the Social and Behavioral Scienc ...
Olympic National Park
Olympic National Park is a national park of the United States located in Washington, on the Olympic Peninsula. The park has four regions: the Pacific coastline, alpine areas, the west-side temperate rainforest, and the forests of the drier e ...
state senator
A state senator is a member of a State legislature (United States), state's senate in the bicameral legislature of 49 U.S. states, or a member of the unicameral Nebraska Legislature.
History
There are typically fewer state senators than there ...
File:Cedar Creek Abbey Island Ruby Beach.jpg, Cedar Creek and Abbey Island, Kalaloch Area
File:ElwhaRiverCurve.JPG, Hoh River
File:Hoh Rain Forest Entrance Sign.jpg, National Park Service Sign at the entrance of Hoh Rain Forest
File:HurricaneRidgeDaytime.JPG, Hurricane Ridge
File:Lake Crescent spring.jpg, Lake Crescent
File:ElwhaRiverDaytime.JPG, Elwha River
File:Point of the Arches, Olympic National Park.jpeg, Point of the Arches
File:Fog at Hurricane Ridge.jpg, A foggy day at Hurricane Ridge
Mount Constance.jpg, Mount Constance
Cities and towns in the Olympic Peninsula
Population of at least 10,000
*
Port Angeles
Port Angeles ( ) is a city and county seat of Clallam County, Washington, United States. The population was 19,960 at the 2020 census, it is the most populous city in the county, as well as the most populous city on the Olympic Peninsula. T ...
*
Aberdeen
Aberdeen ( ; ; ) is a port city in North East Scotland, and is the List of towns and cities in Scotland by population, third most populous Cities of Scotland, Scottish city. Historically, Aberdeen was within the historic county of Aberdeensh ...
Forks
In cutlery or kitchenware, a fork (from 'pitchfork') is a Eating utensil, utensil, now usually made of metal, whose long handle terminates in a head that branches into several narrow and often slightly curved tine (structural), tines with whic ...
La Push
La Push is a small unincorporated area, unincorporated community situated at the mouth of the Quillayute River in the Western Olympic Peninsula. It is the de facto capital and main population center of the Quileute Indian Reservation, which is ho ...
Potlatch
A potlatch is a gift-giving feast practiced by Indigenous peoples of the Pacific Northwest Coast of Canada and the United States,Harkin, Michael E., 2001, Potlatch in Anthropology, International Encyclopedia of the Social and Behavioral Scienc ...