Lewis and Clark National Wildlife Refuge

Knappa High School is a public high school near Knappa, Oregon, United States. The school is located on Old Highway 30, 12 miles east of Astoria and 90 miles from Portland, between Svensen and Knappa. The Knappa School District serves the unincorporated communities of Knappa, Svensen, Burnside and Brownsmead. Knappa High School's first class graduated in 1919. The Knappa school district has won baseball championship in 2009, 2015, 2016, and in 2017.

Altoona is a census-designated place (CDP) in Wahkiakum County, Washington, approximately 27 miles northwest of the town of Cathlamet. The population was 39 as of the 2010 census. The CDP includes the communities of Carlson Landing and Dahlia.

For the mountain and rock in the English Lake District, search under Pillar (Lake District) Pillar Rock is a pillar-like monolith in the Columbia River, near its mouth in the state of Washington. Originally rising 75-100 feet, it was dynamited and reduced in height to about 25 feet above the water to serve as a navigational aid and light. The Lewis and Clark Expedition camped twice near the rock, on November 7 and November 25, 1805. The name "Pillar Rock" also refers to a small village on the river's north shore, opposite the rock. As recently as 1851, the village was home to a small group of the Kathlamet band of Chinook Indians under the headship of a man named Tolillicum.

Svensen is an unincorporated community and census-designated place (CDP) on the Columbia River in Clatsop County, Oregon, United States, named after early settler Peter Svensen. There was a post office in Svensen from 1895 to 1944. Since the closure of the Svensen Post Office, mail service has been provided by rural carriers of the Astoria, Oregon post office. Svensen is within the Knappa School District.

Knappa is an unincorporated community and census-designated place located on the south bank of the Columbia River in Clatsop County, Oregon, United States, approximately 12 miles (19 km) directly east of Astoria. Knappa faces the Columbia River, where several islands comprise the Lewis and Clark National Wildlife Refuge. The community is named after Aaron Knapp Jr., an early settler. There was a post office in Knappa from 1872 to 1943. Logging and fishing are the primary economic activities in Knappa. Knappa School District comprises Hilda Lahti Elementary School and Knappa High School.

Brookfield was a salmon-canning and fishing town located on the Columbia River in Wahkiakum County, Washington, United States, from 1873 to 1957. It was the home of the J.G. Megler Company.

Brownsmead is an unincorporated community, on a distributary of the Columbia River called Saspal Slough, in Clatsop County, Oregon, United States. Previously known as Brody, it was named after W.G. Brown, a Portland engineer involved in land reclamation in the area. There was a post office in Brownsmead from 1919 to 1975, located in the Brownsmead General Store. Historic photos of the Brownsmead fish station, located where Davis Creek feeds into Blind Slough, reveal docked gillnetting boats. One such boat is shown in the boat hoist, resting above the water by several feet on the dock. Brownsmead is the northernmost settlement in the state of Oregon.

Harlows Creek is a stream in Wahkiakum County in the U.S. state of Washington. The name of the stream used to be Jim Crow Creek until it was changed by the U.S. Board of Geographic Names effective May 10, 2017 as part of an nationwide effort to remove offensive and/or derogatory names from geographic features. The new name commemorates John (1872-1953) and Mary (1888-1963) Harlow, who lived in the area during the 1870s. The origin of the name Jim Crow Creek was a reference to James D. Saules, a free black sailor who travelled widely throughout the Pacific in the 1800s. He was part of the United States Exploring Expedition. After the Cockstock incident along the lower Columbia River four nearby places where named "Jim Crow" due to Saules's involvement: Jim Crow Creek (Harlows Creek), Jim Crow Hill (now Beare Hill), Jim Crow Point (now Brookfield Point), and Jim Crow Sands. The incident also contributed to the Provisional Government of Oregon enacting the Oregon black exclusion laws. All three "Jim Crow" places names in Washington were renamed in 2017 due to the efforts of Washington Senator Pramila Jayapal. Jim Crow Sands, in the Columbia River, is in Oregon and has not been renamed as of 2023. Harlows Creek originates high on the slopes of Elk Mountain and flows south to the Columbia River, entering the river just east of the historical community of Brookfield, about 13 mi (21 km) east of Astoria, Oregon. Harlows Creek has one named tributary, Fink Creek. An early 20th century work suggested the point was named for crows that nested there. However, this reference also suggests a tree growing on the point could be seen far out at sea, an idea which should not be taken seriously due to distance as well as geographic features, so the reference itself might have little value.

Grays River is a tributary of the Columbia River, approximately 30 miles (48 km) long, in southwestern Washington in the United States. One of the last tributaries of the Columbia on the Washington side, it drains an area of low hills north of the mouth of the river.

The John Day River is a tributary of the Columbia River, approximately 6 miles (10 km) long, in northwestern Oregon in the United States. The river rises in the Northern Oregon Coast Range in Clatsop County at 46.138889°N 123.704722°W / 46.138889; -123.704722 (John Day River source).Flowing generally north, the river enters the Columbia at John Day Point, east of Tongue Point and about 4 miles (7 km) east of Astoria. It passes under U.S. Route 30 near the unincorporated community of John Day (not to be confused with the city of the same name in Grant County). The mouth of the river is about 15 miles (24 km) upstream from the mouth of the Columbia on the Pacific. The John Day River has only one named tributary, Jack Creek, which enters from the left.The river is named for John Day, a hunter and fur trapper who took part in William Price Hunt's overland expedition for John Jacob Astor in 1811–12. There's a John Day River in eastern Oregon, a John Day Dam, a city John Day, and John Day Fossil Beds National Monument, which were all named after John Day. John Day Point, a cape located at the mouth of the river and protruding into Cathlamet Bay, takes its name from the river, as did a former railway station in the vicinity. Lewis and Clark, who camped near here in 1805, referred to the river as Kekemarke, their version of a Native American name. Lewis and Clark write about the river in their journals. The river was known as Swan Creek by Charles Wilkes, of the U.S. Exploring Expedition and was documented as such on his illustrated map.There's a railroad swing bridge crossing the mouth of the river. The tracks were used by Lewis and Clark Explorer Train which is no longer operating. The railroad bridge has a clearance of 8 feet.Tidal currents control the river throughout most of its length. Moored houseboats cover some of the shorelines on both sides of the river.

Rosburg is a Census-designated place (CDP) in Wahkiakum County, Washington, United States. Rosburg is located on the Grays River near Washington State Route 4, 15 miles (24 km) northwest of Cathlamet. Rosburg has a post office with ZIP code 98643. The CDP includes the communities of Eden and Oneida. Christian Rosburg, the town's first postmaster, named Rosburg for himself.

USS LSM-380 was a LSM-1-class landing ship medium in the United States Navy during World War II. She was later sold to Fred Devine to be used as a salvage ship, renamed MV Salvage Chief. She is the last known surviving LSM of World War II in the world.