The Columbia River is the largest river in the Pacific Northwest region of North America. The river forms in the Rocky Mountains of British Columbia, Canada. It flows northwest and then south into the U.S. state of Washington, then turns west to form most of the border between Washington and the state of Oregon before emptying into the Pacific Ocean. The river is 1,243 miles long, and its largest tributary is the Snake River. Its drainage basin is roughly the size of France and extends into seven states of the United States and one Canadian province. The fourth-largest river in the United States by volume, the Columbia has the greatest flow of any river entering the Pacific outside of Asia, and the 36th greatest discharge of any river in the world.
Skamania County is a county located in the U.S. state of Washington. As of the 2020 census, the population was 12,036. The county seat and largest incorporated city is Stevenson, although the Carson River Valley CDP is more populous. Skamania County is included in the Portland-Vancouver-Hillsboro, OR-WA Metropolitan Statistical Area.
Cascade Locks is a city in Hood River County, Oregon, United States. The city got its name from a set of locks built to improve navigation past the Cascades Rapids of the Columbia River. The U.S. federal government approved the plan for the locks in 1875, construction began in 1878, and the locks were completed on November 5, 1896. The locks were subsequently submerged in 1938, replaced by Bonneville Lock and Dam, although the city did not lose land from the expansion of Lake Bonneville behind the dam some 4 miles (6 km) downstream of the city. The city population was 1,144 at the 2010 census.
Stevenson is a city in the Columbia River Gorge National Scenic Area along the Columbia River in Skamania County, Washington, United States. It is the county seat of Skamania County and home to the Skamania County Court House and Sheriff's Office. The population was 1,491 at the 2020 census.
The Columbia River Gorge is a canyon of the Columbia River in the Pacific Northwest of the United States. Up to 4,000 feet (1,200 m) deep, the canyon stretches for over eighty miles (130 km) as the river winds westward through the Cascade Range, forming the boundary between the state of Washington to the north and Oregon to the south. Extending roughly from the confluence of the Columbia with the Deschutes River in the east down to the eastern reaches of the Portland metropolitan area, the water gap furnishes the only navigable route through the Cascades and the only water connection between the Columbia Plateau and the Pacific Ocean. It is thus that the routes of Interstate 84, U.S. Route 30, Washington State Route 14, and railroad tracks on both sides run through the gorge.
Bonneville Lock and Dam consists of several run-of-the-river dam structures that together complete a span of the Columbia River between the U.S. states of Oregon and Washington at River Mile 146.1. The dam is located 40 miles (64 km) east of Portland, Oregon, in the Columbia River Gorge. The primary functions of Bonneville Lock and Dam are electrical power generation and river navigation. The dam was built and is managed by the United States Army Corps of Engineers. At the time of its construction in the 1930s it was the largest water impoundment project of its type in the nation, able to withstand flooding on an unprecedented scale. Electrical power generated at Bonneville is distributed by the Bonneville Power Administration. Bonneville Dam is named for Army Capt. Benjamin Bonneville, an early explorer credited with charting much of the Oregon Trail. The Bonneville Dam Historic District was designated a National Historic Landmark District in 1987.
The Bridge of the Gods was a natural dam created by the Bonneville Slide, a major landslide that dammed the Columbia River near present-day Cascade Locks, Oregon in the Pacific Northwest of the United States. The river eventually breached the bridge and washed much of it away, but the event is remembered in local legends of the Native Americans as the Bridge of the Gods.
The Cascades Rapids were an area of rapids along North America's Columbia River, between the U.S. states of Washington and Oregon. Through a stretch approximately 150 yards (140 m) wide, the river dropped about 40 feet (12 m) in 2 miles (3.2 km). These rapids or cascades, along with the many cascades along the Columbia River Gorge in this area of Oregon and Washington, gave rise to the name for the surrounding mountains: the Cascade Range.
The Lewis River is a tributary of the Columbia River, about 95 miles (153 km) long, in southwestern Washington in the United States. It drains part of the Cascade Range north of the Columbia River. The drainage basin of the Lewis River covers about 1,046 square miles (2,709 km2). The river's mean annual discharge is about 6,125 cubic feet per second (173.4 m3/s). Unlike nearby Lewis County and Fort Lewis the Lewis River was not named for Meriwether Lewis, but rather for A. Lee Lewis, an early colonizer who homesteaded near the mouth of the river.
Kettle Falls was an ancient and important salmon fishing site on the upper reaches of the Columbia River, in what is today the U.S. state of Washington, near the Canada–US border. The falls consisted of a series of rapids and cascades where the river passed through quartzite rocks deposited by prehistoric floods on a substrate of Columbia River basalt. The river dropped nearly 50 feet (15 m), and the sound of the falls could be heard for miles away. Kettle Falls was inundated in 1940, as the waters of the reservoir Lake Roosevelt rose behind Grand Coulee Dam, permanently flooding the site.
Condit Hydroelectric Project was a development on the White Salmon River in the U.S. state of Washington. It was completed in 1913 to provide electrical power for local industry, and is listed in the National Register of Historic Places as an engineering and architecture landmark.
Skamania is a small unincorporated community in Skamania County in the southwestern part of the U.S. state of Washington.
Fort Raines was a United States Army blockhouse built in October 1855 to protect the portage road around the Cascades Rapids. It is located on the Washington side of the Columbia River, west of the Bridge of the Gods, at the "middle cascades." It was abandoned by 1857. The interpretive sign at the former site states that the post was "damp and lonely." Fort Raines was named for Brigadier General Gabriel J. Raines, who created anti-personnel mines for the Confederacy. Fort Raines had withstood the Cascades Massacre in 1856; but it was later destroyed in 1876. The only thing to remember Fort Raines was the Memorial Blockhouse that was erected near the original location in 1927. That too was destroyed and now there are only two informational signs near the site.
Many steamboats operated on the Columbia River and its tributaries, in the Pacific Northwest region of North America, from about 1850 to 1981. Major tributaries of the Columbia that formed steamboat routes included the Willamette and Snake rivers. Navigation was impractical between the Snake River and the Canada–US border, due to several rapids, but steamboats also operated along the Wenatchee Reach of the Columbia, in northern Washington, and on the Arrow Lakes of southern British Columbia.
The Cascade Locks and Canal was a navigation project on the Columbia River between the U.S. states of Oregon and Washington, completed in 1896. It allowed the steamboats of the Columbia River to bypass the Cascades Rapids, and thereby opened a passage from the lower parts of the river as far as The Dalles. The locks were submerged and rendered obsolete in 1938, when the Bonneville Dam was constructed, along with a new set of locks, a short way downstream.
Celilo Canal was a canal in Oregon connecting two points of the Columbia River, just east of The Dalles.
The steamboat Hassalo operated from 1880 to 1898 on the Columbia River and Puget Sound. Hassalo became famous for running the Cascades of the Columbia on May 26, 1888 at a speed approaching 60 miles (97 km) an hour. This vessel should not be confused with other steamboats with the same or a similar name, including Hassalo (1899) and Hassaloe (1857).
The Portland District is one of the five districts within the Northwestern Division of the United States Army Corps of Engineers. The Portland District is made up of some 1,100 civilian and 6 military personnel.
The Oregon Portage Railroad was the first railroad in the U.S. state of Oregon. It was located on the south bank of the Cascades canal of the Columbia River.
Warrendale is an unincorporated community in Multnomah County, Oregon, United States. It is located about a mile east of Dodson and about 3 miles (4.8 km) west of Bonneville in the Columbia River Gorge on Interstate 84/U.S. Route 30. It is across the Columbia River from Beacon Rock. The community was the site of an important salmon cannery founded in the 1870s.
