Idaho

IDState of Idaho(ID)Geography of IdahoIdaho ConstitutionLaw of IdahoUS-ID43rd StateClimate of IdahoConstitution of Idaho
Idaho is a state in the northwestern region of the United States.wikipedia
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Montana

MTState of MontanaMontana, USA
It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west.
Montana is bordered by Idaho to the west, Wyoming to the south, North Dakota and South Dakota to the east, and the Canadian provinces of British Columbia, Alberta, and Saskatchewan to the north.

Nevada

NVState of NevadaNevada, USA
It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west.
It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east.

Oregon

ORState of OregonOregon, USA
It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west.
The Columbia River delineates much of Oregon's northern boundary with Washington, while the Snake River delineates much of its eastern boundary with Idaho.

Washington (state)

WashingtonWashington StateWA
It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west.
The state, which is bordered on the west by the Pacific Ocean, Oregon to the south, Idaho to the east, and the Canadian province of British Columbia to the north, was admitted to the Union as the 42nd state in 1889.

Wyoming

WYState of WyomingWyoming, USA
It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west.
Wyoming is bordered on the north by Montana, on the east by South Dakota and Nebraska, on the south by Colorado, on the southwest by Utah, and on the west by Idaho and Montana.

Northwestern United States

NorthwestnorthwesternAmerican Northwest
Idaho is a state in the northwestern region of the United States.
The region consistently includes the states of Oregon, Washington and Idaho—and usually Montana and Wyoming.

Boise, Idaho

BoiseBoise, IDBoise City
The state's capital and largest city is Boise.
Boise is the capital and most populous city of the U.S. state of Idaho, and is the county seat of Ada County.

Pacific Northwest

northwestNorthwest CoastPacific Northwest Coast
Forming part of the Pacific Northwest (and the associated Cascadia bioregion), Idaho is divided into several distinct geographic and climatic regions.
Though no official boundary exists, the most common conception includes the Canadian province of British Columbia (BC) and the U.S. states of Idaho, Oregon, and Washington.

British Columbia

BCBritish Columbia, CanadaB.C.
To the north, it shares a small portion of the Canadian border with the province of British Columbia.
British Columbia is bordered to the west by the Pacific Ocean and the American state of Alaska, to the north by Yukon Territory and the Northwest Territories, to the east by the province of Alberta, and to the south by the American states of Washington, Idaho, and Montana.

Idaho Panhandle

northernnorthern IdahoNorth Idaho
The state's north, the relatively isolated Idaho Panhandle, is closely linked with Eastern Washington with which it shares the Pacific Time Zone – the rest of the state uses the Mountain Time Zone.
The Idaho Panhandle—locally known as North Idaho—is a region in the U.S. state of Idaho encompassing the state's 10 northernmost counties: Benewah, Bonner, Boundary, Clearwater, Idaho, Kootenai, Latah, Lewis, Nez Perce, and Shoshone (though the southern part of the region is sometimes referred to as North Central Idaho).

Canada–United States border

Canada–US borderCanadian borderInternational Boundary
To the north, it shares a small portion of the Canadian border with the province of British Columbia.
Eight Canadian provinces and territories (Yukon, British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, and New Brunswick), and thirteen U.S. states (Alaska, Washington, Idaho, Montana, North Dakota, Minnesota, Michigan, Ohio, Pennsylvania, New York, Vermont, New Hampshire, and Maine) are located along the border.

Idaho Territory

Territory of IdahoIdahoterritorial
It officially became U.S. territory with the signing of the Oregon Treaty of 1846, but a separate Idaho Territory was not organized until 1863, instead being included for periods in Oregon Territory and Washington Territory.
The Territory of Idaho was an organized incorporated territory of the United States that existed from March 3, 1863, until July 3, 1890, when the final extent of the territory was admitted to the Union as Idaho.

Great Basin

Gran CuencaGreat Basin sectionGreat Basin region
The state's south-east incorporates part of the Great Basin.
It spans nearly all of Nevada, much of Oregon and Utah, and portions of California, Idaho, and Wyoming.

Snake River Plain

Snake River ValleyLake IdahoSnake River Basin
The state's south includes the Snake River Plain (which has most of the population and agricultural land).
The Snake River Plain is a geologic feature located primarily within the U.S. state of Idaho.

Idaho County, Idaho

Idaho CountyIdahocounty in Washington Territory
The same year Congress created Colorado Territory, a county called Idaho County was created in eastern Washington Territory.
Idaho County is a county in the U.S. state of Idaho, and the largest by area in the state.

Utah

UTState of UtahUtah, U.S.
It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west.
Utah is bordered by Colorado to the east, Wyoming to the northeast, Idaho to the north, Arizona to the south, and Nevada to the west.

Oregon Territory

Territory of OregonOregonterritorial
It officially became U.S. territory with the signing of the Oregon Treaty of 1846, but a separate Idaho Territory was not organized until 1863, instead being included for periods in Oregon Territory and Washington Territory.
When established, the territory encompassed an area that included the current states of Oregon, Washington, and Idaho, as well as parts of Wyoming and Montana.

Snake River

SnakeSnake CountrySnake River Valley
The waters of the Snake River rush through Hells Canyon, the deepest gorge in the United States. The major rivers in Idaho are the Snake River, the Clark Fork/Pend Oreille River, the Clearwater River, and the Salmon River.
The Snake River rises in western Wyoming, then flows through the Snake River Plain of southern Idaho, the rugged Hells Canyon on the Oregon–Idaho border and the rolling Palouse Hills of Washington, emptying into the Columbia River at the Tri-Cities, Washington.

Oregon Country

Oregonearly non-native explorersEuropean settlement
In the early 19th century, Idaho was considered part of the Oregon Country, an area disputed between the U.S. and the United Kingdom.
The area now forms part of the present day Canadian province of British Columbia, all of the US states of Oregon, Washington, and Idaho, and parts of Montana and Wyoming.

Frank Church–River of No Return Wilderness

Frank Church-River of No Return WildernessFrank Church River of No Return WildernessFrank Church—River of No Return Wilderness
For example, at 2.3 million acres (930,000 ha), the Frank Church-River of No Return Wilderness Area is the largest contiguous area of protected wilderness in the continental United States.
The Frank Church—River of No Return Wilderness Area is a protected wilderness area in Idaho.

Shoshone Falls

Shoshone Falls plunges down rugged cliffs from a height greater than Niagara Falls.
Shoshone Falls is a waterfall on the Snake River in southern Idaho, United States, approximately 3 mi northeast of the city of Twin Falls.

Salmon River (Idaho)

Salmon RiverSalmonSalmon River, Idaho
The major rivers in Idaho are the Snake River, the Clark Fork/Pend Oreille River, the Clearwater River, and the Salmon River.
The Salmon River is located in Idaho in the northwestern United States.

Washington Territory

Territory of WashingtonWashingtonterritorial government
It officially became U.S. territory with the signing of the Oregon Treaty of 1846, but a separate Idaho Territory was not organized until 1863, instead being included for periods in Oregon Territory and Washington Territory. The same year Congress created Colorado Territory, a county called Idaho County was created in eastern Washington Territory.
At its largest extent, it also included the entirety of modern Idaho and parts of Montana and Wyoming, before attaining its final boundaries in 1863.

Pend Oreille River

Pend d'Oreille RiverPend OreilleColumbia / Pend Oreille
The major rivers in Idaho are the Snake River, the Clark Fork/Pend Oreille River, the Clearwater River, and the Salmon River.
The Pend Oreille River is a tributary of the Columbia River, approximately 130 mi long, in northern Idaho and northeastern Washington in the United States, as well as southeastern British Columbia in Canada.

Clark Fork River

Clark ForkClark Fork (river)Clark
The major rivers in Idaho are the Snake River, the Clark Fork/Pend Oreille River, the Clearwater River, and the Salmon River.
The Clark Fork, or the Clark Fork of the Columbia River, is a river in the U.S. states of Montana and Idaho, approximately 310 mi long.