South Fork Alsea River

The North Fork Alsea River is a 16-mile (26 km) tributary of the Alsea River in the U.S. state of Oregon. It begins at Klickitat Lake, fed by Klickitat and Lake creeks in the Central Oregon Coast Range, and flows generally south to near Alsea, where it joins the South Fork Alsea River to form the main stem. For most of its course, the North Fork winds through the Siuslaw National Forest in Lincoln County and then Benton County. It passes under Oregon Route 34 northeast of Alsea.The Alsea Hatchery, constructed by the state in 1936, raises winter steelhead and other rainbow trout along the North Fork. According to Fishing in Oregon, the river is a "beautiful stream (well-suited to fly angling) with a large run of hatchery winter steelhead." The stream also supports populations of wild cutthroat trout. It is closed to salmon fishing or fishing from a floating device.Clemens Park, a Benton County park of about 38 acres (15 ha), lies along the North Fork and Route 34 near Alsea. Amenities include picnic tables, restrooms, a self-guided nature trail, fishing and "areas for water play".

Alsea ( AL-see) is an unincorporated community in Benton County, in the U.S. state of Oregon. It is on Oregon Route 34 and the Alsea River. For statistical purposes, the United States Census Bureau has defined Alsea as a census-designated place (CDP). The census definition of the area may not precisely correspond to local understanding of the area with the same name. As of the 2020 Census, the population was 165.

Alsea High School is a public high school in Alsea, Oregon, United States.

Hayden Bridge, a Howe truss structure, spans the Alsea River about 2 miles (3 km) west of Alsea, Oregon, United States. Constructed in 1918, the 91-foot (28 m) span is one of only seven remaining covered bridges in Oregon that were built before 1920. Similar spans such as the Mill Creek Bridge crossed the Alsea or one of its tributaries in the same vicinity, but only the Hayden Bridge has survived. It was added to the National Register of Historic Places in 1979.Located along Hayden Road just south of Oregon Route 34, the bridge was either partly or completely rebuilt in 1945. Changes included larger and less rounded bridge portals that could accommodate larger vehicles. Narrow openings under the side-wall eaves on both sides of the span illuminated the interior. The bridge, repaired again in 2003, required further work in 2006 after a logging truck crashed into it.Of the more than 600 covered bridges once found in Oregon, only 50 remain. After 1915, although some were of queen-post or king-post design, most of the new covered bridges were of Howe-truss design. In that year, the Oregon legislature passed a law giving the Oregon State Highway Department oversight powers for bridges worth more than $500. The department developed plans for Howe-truss bridges, partly because they were relatively easy to assemble, and distributed them to the state's counties. Many of these bridges, often built with Douglas-fir timber available locally, were replaced in the 1940s and 1950s by bridges more suited to logging trucks and other big vehicles. Although most of the original bridges no longer exist, the remaining bridges have gained value as tourist attractions.

Grass Mountain is a 3,607-foot (1,099 m) tall mountain in the Central Oregon Coast Range in the U.S. state of Oregon. Located in Benton County, it is the second highest peak in the Central Coast Range.The Oregon Department of Forestry built 40-foot (12 m) lookout tower on the summit in 1935. It was decommissioned and dismantled in 1968.

The Oregon Coast Range, often called simply the Coast Range and sometimes the Pacific Coast Range, is a mountain range, in the Pacific Coast Ranges physiographic region, in the U.S. state of Oregon along the Pacific Ocean. This north-south running range extends over 200 miles (320 km) from the Columbia River in the north on the border of Oregon and Washington, south to the middle fork of the Coquille River. It is 30 to 60 miles (48 to 97 km) wide and averages around 1,500 feet (460 m) in elevation above sea level. The coast range has three main sections, a Northern, Central, and Southern. The oldest portions of the range are over 60 million years old, with volcanics and a forearc basin as the primary mountain building processes responsible for the range. It is part of the larger grouping known as the Pacific Coast Ranges that extends over much of the western edge of North America from California to Alaska. The range creates a rain shadow effect for the Willamette Valley that lies to the east of the mountains, creating a more stable climate and significantly less rain than the coastal region of the state. To the west where the range over-shadows the Oregon Coast, the range causes more precipitation to fall on that side of the mountains, contributing to the numerous rivers that flow to the Pacific Ocean. Marys Peak in the Central Coast Range is the highest peak at 4,097 feet (1,248 m). Logging is a major industry in the range in both private and government owned forests. Both the state and federal government manage forests in the Oregon Coast Range. The mountains are home to a variety of wildlife including black bear, elk, deer, beaver, many species of birds, and bats among others. Fish, including salmon and trout, and other aquatic life inhabit the streams and rivers flowing through the range.

Marys Peak (formerly Mary's Peak and sometimes still spelled this way) is a mountain in Benton County, Oregon, United States, just southwest of Philomath. According to the Benton County Historical Society, the native Kalapuya called the peak tcha Timanwi, or 'place of spiritual power.' It is the highest peak in the Oregon Coast Range. It is also the highest point in Benton County, and ranks eleventh in the state for prominence.On a clear day at the top of the peak, facing east, northeast, and southeast, one can see the cities and suburbs of the Willamette Valley, as well as the Cascade Range. To the west, the Pacific Ocean is visible on clear days. The road to the peak now remains open in the winter. During the 2010–2011 winter, the Forest Service announced that it will leave the gates open to facilitate travel to the summit. The road will not be maintained, so a lifted 4x4 or four-wheel chains are required for motor access during the winter months.On June 15, 2019, the Oregon Geographic Names Board unanimously endorsed a proposal to give Native American names to 10 unnamed creeks that flow down Marys Peak. The Confederated Tribes of the Grand Ronde and Confederated Tribes of Siletz Indians were enlisted to be involved in representing the ancient indigenous groups and selecting the new names. The names proposed for adoption are in the languages of the Kalapuya, Wusi’n and Yaqo’n people who originally inhabited the land. The U.S. Board on Geographic Names unanimously approved the 10 names in September 2019.

Harlan is an unincorporated community in Lincoln County, Oregon, United States, about 30 miles west of Corvallis. It is located in a valley of the Central Oregon Coast Range in the Siuslaw National Forest. The community's economy was once based on logging and sawmills. Cattle ranching is another mainstay of the local economy.James R. Harlan helped establish a post office at this locale and the office was named for him. Harlan post office ran from 1890 until 1968; Harlan was the first postmaster. Harlan Cemetery was also founded in 1890.In 1915, Harlan had a public school and a population of 200. A new school and a store were built in 1926. Harlan School closed in 1967 and students then attended school in Eddyville. The store, which housed the post office and was also a gas station, closed in 1971 and is now a private residence. In 1993, author Ralph Friedman reported that there was "nothing much" in Harlan. Chapel of the Valley church, built in 1961, still serves a congregation. The last commercial sawmill in Harlan shut down in the early 1980s. As of 2008, a small one-man hobby sawmill still operated.

Benton County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 95,184. Its county seat is Corvallis. The county was named after Thomas Hart Benton, a U.S. Senator who advocated American control over the Oregon Country. Benton County is designated as the Corvallis, OR Metropolitan Statistical Area, which is included in the Portland–Vancouver–Salem, OR–WA Combined Statistical Area. It is in the Willamette Valley.

Five Rivers is a tributary of the Alsea River in the U.S. state of Oregon, in Lane, Lincoln, Benton counties. The name Five Rivers refers to the relative importance to the stream of five of its tributaries: Alder, Cougar, Buck, Crab, and Cherry creeks.

Alder is an unincorporated community in Benton County, Oregon, United States. Alder lies near U.S. Route 20 southeast of Blodgett on the Marys River in the Central Oregon Coast Range. The post office serving Alder was named Hipp.Alder railroad station on Southern Pacific's Toledo Line (now owned by the Portland and Western Railroad) was established in 1911, but in 1922 the Post Office Department would not name the community's new post office "Alder" because of potential confusion with many other offices with the same name. The name "Hipp" was suggested by the office manager of the nearby Climax Lumber Company mill; the name was apparently made up from the initials of the first names of people who owned the mill. The office ran until 1930.

The Tumtum River is a 9-mile (14 km) tributary of the Marys River in Benton and Lincoln counties in the U.S. state of Oregon. The river rises in the Central Oregon Coast Range west of Burnt Woods and passes through the communities of Burnt Woods and Blodgett. It then drains into the Marys River north of Alder.The name Tumtum is a Chinook Jargon word for "heart", and the river was so-named because it was considered to be the heart of the valley through which it flowed. When the Burnt Woods post office was to be named, one of the names proposed to the Post Office Department was Tumtum.