Burlington, Multnomah County, Oregon

Fort William was a fur trading outpost built in 1834 by the American Nathaniel Jarvis Wyeth, a Boston merchant, backed by American investors. It was located on the Columbia River on Wappatoo Island near the future Portland, Oregon. After a few years, in 1837 Wyeth sold the post to the British Hudson's Bay Company, which had much more power in the region from its base at Fort Vancouver on the north side of the Columbia River near Fort William. In 1835, the fort settlement was the site of a murder and the first European American trial to be held in what is now the state of Oregon.

The Bybee–Howell House is a historic house, located on Sauvie Island (in the Columbia River), Oregon, United States. It is listed on the National Register of Historic Places. As of 2010, it is part of Howell Territorial Park, administered by the Metro regional government.

Holbrook is an unincorporated community in Multnomah County, Oregon, United States. It is located on U.S. Route 30 about 15 miles northwest of Portland between the Tualatin Mountains and the Multnomah Channel south of Sauvie Island. Holbrook's elevation is 135 feet above sea level.The community was named for pioneer Philo Holbrook, who owned a farm nearby. Holbrook had a post office from 1887 to 1933.

Riverview was an unincorporated community on Sauvie Island in Multnomah County, Oregon, United States. However, according to the United States Geological Survey, a settlement named Riverview may not have existed in this location.

This is a list of bridges and other crossings of the Willamette River in the U.S. state of Oregon from the Columbia River upstream to the confluence of the Middle Fork Willamette River and Coast Fork Willamette River. This confluence, at 44.023318°N 123.023897°W / 44.023318; -123.023897 (Willamette River source), is considered the source of the Willamette River.

The Sauvie Island Bridge crosses the Multnomah Channel of the Willamette River near Portland, Oregon, United States. The original Parker truss bridge, built in 1950 with a 200-foot (61 m) main span, was replaced with a tied arch bridge with a 360-foot (110 m) span in 2008 due to cracks discovered in 2001.

Blackberry Castle is a private residence resembling a castle, located in Portland, Oregon, in the United States. Construction of the 13,000-square-foot, French-style house took three years, and was completed in 2015. Features include a ceiling fresco, climbing wall, indoor theater, and the largest ceiling clock dial in Oregon, which is installed above a two-story library. The property was put on the market for $7,175,000 in March 2015. Mia Malkova, an adult-film actress, and Eli Tucker, a content producer, along with a silent partner, paid $3.9 million to make the gated and guarded estate a home film studio. According to public records, the new owners closed the deal December 18, 2020, and took possession of the castle’s 13,000 square feet of living space on January 9, 2021.

Nemalquinner (phonetic: nimáɬx̣ʷinix) was a Native American settlement inhabited by a band of Chinookan peoples on the east bank of the Willamette River near what is now the St. Johns neighborhood of Portland, Oregon in the United States about 2 miles (3.2 km) upstream of where the Willamette River enters the Columbia River. When encountered by the Lewis and Clark Expedition in April 1806, it was reported to have one large longhouse, a few smaller ones, and a population between 100 and 200 people. People dwelling near Willamette Falls upstream would come here to gather wapato roots.The term Nemalquinner may have also been applied to the inhabitants of this location.

Sauvie Island, in the U.S. state of Oregon, originally Wapato Island or Wappatoo Island, is the largest island along the Columbia River, at 26,000 acres (10,522 ha), and one of the largest river islands in the United States. It lies approximately ten miles northwest of downtown Portland, between the Columbia River to the east, the Multnomah Channel to the west, and the Willamette River to the south. A large portion of the island is designated as the Sauvie Island Wildlife Area. Sturgeon Lake, in the north central part of the island, is the most prominent water feature. The land area is 32.75 square miles (84.8 km2), or 20,959 acres (8,482 ha). Most of the island is in Multnomah County, but the northern third is in Columbia County. The Wapato Bridge provides access across the Multnomah Channel from U.S. Route 30 and was completed in June 2008, replacing the first bridge to connect the island to the mainland which was opened on December 30, 1950. The island received the name "Sauvés Island" after Laurent Sauvé dit Laplante, a French-Canadian who managed a dairy for the Hudson's Bay Company in the 1830s and 1840s. It is predominantly farmland and wildlife refuge and is a popular place for picking pumpkins, hunting geese and kayaking. There were 1,078 year-round residents at the 2000 census. There is an industrial zone and small grocery store in the southeast corner, near the bridge. Bicyclists flock to the island because its flat topography and lengthy low-volume roads make it ideal for cycling. Its nearest incorporated neighbors are the Portland-Vancouver metropolitan area to its south and southeast; St. Helens across the Multnomah Channel from the extreme northern tip of the island; and Scappoose, across the Multnomah Channel to the west.

Smith and Bybee Wetlands Natural Area is a public park and nature reserve between the Columbia Slough and the Columbia River in Portland, Oregon. At about 2,000 acres (810 ha), it is one of the largest urban freshwater wetlands in the United States. Metro, the regional government for the Oregon part of the Portland metropolitan area, manages the park. A covered shelter, restrooms, a paved walkway, and a canoe launch lie on the north side of the natural area. Although surrounded by port terminals, warehouses, and commercial areas, Smith and Bybee Wetlands Natural Area provides habitat for a wide variety of wildlife including beaver, bald eagles and western painted turtles. An artificial water-control system helps keep the wetlands wet. Other systems collect methane and prevent leaching from a closed landfill near the south edge of the park.

Oregon Shipbuilding Corporation was a World War II emergency shipyard located along the Willamette River in Portland, Oregon, United States. The shipyard built nearly 600 Liberty and Victory ships between 1941 and 1945 under the Emergency Shipbuilding program. It was closed after the war ended. The shipyard, one of three Kaiser Shipyards in the area, was in the St. Johns neighborhood of North Portland. The two others were the Swan Island Shipyard, located several miles upriver on Swan Island; and the Vancouver Shipyard, located across the Columbia River from Portland in Vancouver, Washington.Among the ships built by Oregon Shipbuilding was the Star of Oregon, which was launched on Liberty Fleet Day, September 27, 1941. The rapid expansion of Portland area shipyards during World War II and contraction afterward caused similar expansion and contraction of the population of Vanport City, Oregon, which was also built by Henry J. Kaiser to house the workers of the three area shipyards.The former site of Oregon Shipbuilding in St. Johns is now Schnitzer Steel Industries.

The Columbia Slough is a narrow waterway, about 19 miles (31 km) long, in the floodplain of the Columbia River in the U.S. state of Oregon. From its source in the Portland suburb of Fairview, the Columbia Slough meanders west through Gresham and Portland to the Willamette River, about 1 mile (1.6 km) from the Willamette's confluence with the Columbia. It is a remnant of the historic wetlands between the mouths of the Sandy River to the east and the Willamette River to the west. Levees surround much of the main slough as well as many side sloughs, detached sloughs, and nearby lakes. Drainage district employees control water flows with pumps and floodgates. Tidal fluctuations cause reverse flow on the lower slough. The Columbia floodplain, formed by geologic processes including lava flows, volcanic eruptions, and the Missoula Floods, is part of the Portland Basin, which extends across the Columbia River from Multnomah County, Oregon, into Clark County, Washington. Five percent of Oregon's population, about 158,000 people, live in the slough watershed of about 51 square miles (130 km2). Municipal wells near the upper slough provide supplemental drinking water to Portland and nearby cities. The cities, the drainage districts, the county, and a regional government, Metro, have overlapping jurisdictions in the watershed. A regional agency operates Portland International Airport along the middle slough and marine terminals near the lower slough. The Oregon Department of Environmental Quality (DEQ) and the city's Bureau of Environmental Services (BES) deal with environmental issues. Long before non-indigenous people explored the region, tribes of Native Americans fished and hunted along the slough. In the early 19th century fur trappers and explorers including Lewis and Clark visited the area before large migrations of settlers began arriving from the east. The newcomers farmed, cut timber, built houses, and by the early 20th century established cities, shipping ports, roads, rail lines and industries near the slough. Increased investment in the floodplain led to larger losses during floods, and these losses prompted levee building that greatly altered the area. A flood pouring through a levee break in 1948 destroyed the city of Vanport, which was never rebuilt. Used as a waste repository during the first half of the 20th century and cut off from the Columbia River by levees, the slough became one of Oregon's most polluted waterways. Early attempts to mitigate the pollution, which included raw sewage and industrial waste, were unsuccessful. However, in 1952 Portland began sewage treatment, and over the next six decades the federal Clean Water Act and similar legislation mandated further cleanup. State and local governments, often assisted by community volunteers, undertook projects related to public health, natural resources, and recreation in a region with many homes, industries, businesses, and roads. The businesses and industries in the watershed employ about 57,000 people, which is also frequented by more than 150 bird species and 26 fish species and animals including otters, beaver, and coyotes. One of the nation's largest freshwater urban wetlands, Smith and Bybee Wetlands Natural Area, shares the lower slough watershed with a sewage treatment plant, marine terminals, a golf course, and a car racetrack. Watercraft able to portage over culverts and levees can travel the entire length of the slough. The 40-Mile Loop and other hiking and biking trails follow the waterways and connect the parks.