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This is a complete List of National Historic Landmarks in Oregon. The United States National Historic Landmark (NHL) program is operated under the auspices of the National Park Service , and recognizes buildings, structures, districts, objects, and similar resources nationwide according to a list of criteria of national significance. [ 1 ]
The footpaths also provide access to remnants of the original Oregon Trail on the south side of the highway. Exhibits in the park's visitor center describe the history and geology of the park. The park offers trails for hiking and biking, a disc golf course, campground, and access to the Snake River. [2]
April 13, 1992 (Mount Hood National Forest [a: Wamic to Rhododendron: Beginning with its construction by Sam Barlow in 1846, this toll road provided the first overland connection for wagons between The Dalles and Oregon City over Mount Hood, and offered a majority of Oregon Trail emigrants an alternative to the hazardous raft passage down the Columbia River from The Dalles to Fort Vancouver.
The Treasure Valley is a valley in the western United States, primarily in southwestern Idaho, where the Payette, Boise, Weiser, Malheur, and Owyhee rivers drain into the Snake River. It includes all the lowland areas from Vale in rural eastern Oregon to Boise , and is the most populated area in Idaho.
The Lassen Cut-Off continued down the Pit River into California's Central Valley, while the Applegate Cut-Off went into southern Oregon along the Lost River. The lake completely dried up in the years 1851, 1852, 1926, 1929–1934, 1992, [8] 2009, and 2013-2015. Goose Lake overflowed into the Pit River watershed in 1868. [9]
The first dam at American Falls was begun in 1925 by the Bureau of Reclamation and was completed in 1927. The river was temporarily impounded while the new concrete structure was put in place. The Oregon Short Line Railroad bridge over the river had to be raised to allow for crossing the new reservoir. [9] This dam was designed by Frank A ...
Columbia River Basin dams Oxbow Dam is a hydroelectric run-of-the-river rockfill dam in the western United States, on the Snake River in Hells Canyon ( river mile 273) along the Idaho - Oregon border.
The Owyhee River Wilderness is located on the high basalt plateaus of Owyhee County in southwestern Idaho in the western United States. The wilderness area is named after and protects the upper Owyhee River, its tributaries, and the surrounding desert canyon landscape. [1] Whitewater rafting is a popular recreational activity in this wilderness ...