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The Kalapuya are a Native American people, which had eight independent groups speaking three mutually intelligible dialects.The Kalapuya tribes' traditional homelands were the Willamette Valley of present-day western Oregon in the United States, an area bounded by the Cascade Range to the east, the Oregon Coast Range at the west, the Columbia River at the north, to the Calapooya Mountains of ...
The Willamette River (/ w ɪ ˈ l æ m ɪ t / ⓘ wil-AM-it) is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is 187 miles (301 km) long, lying entirely in northwestern Oregon in the United States.
The forest's dominant tree species is the Douglas-fir, the state tree of Oregon. Douglas-fir is a valuable timber species in the United States. The forest contains some stands of old-growth forest, some of which are over 300 feet (91 m) tall, among the tallest trees in the world, with tree diameters ranging from 3 to 8 feet (0.91 to 2.44 m). [10]
Chehalem Creek is a tributary of the Willamette River in Yamhill County in the U.S. state of Oregon. It drains a watershed of 43,400 acres (176 km 2 ), about 68 square miles. [ 4 ] Its headwaters rise on the eastern slope of the Northern Oregon Coast Range above Larsen Reservoir 6 miles (10 km) southeast of Gaston and discharge into the ...
The Willamette River in the northern section of the valley. The Willamette Valley is prone to periodic floods. Notable floods include the Great Flood of 1862, events in 1899, the Christmas flood of 1964, and the Willamette Valley flood of 1996. Part of its floodplain is a National Natural Landmark called the Willamette Floodplain.
This is a list of plants by common name that are native to the U.S. state of Oregon. Adobe parsley; Alaska blueberry; American wild carrot; Austin's popcornflower; Awned melic; Azalea; Azure penstemon; Baby blue eyes; Baldhip rose; Beach strawberry; Beach wormwood; Bearded lupine; Bensoniella; Bigleaf maple; Bigleaf sedge; Birdnest buckwheat ...
In the first 3 miles (5 km) below Waldo Lake, the river drops 2,400 feet (730 m) in 34 separate waterfalls through diverse natural plant life and old growth forest. [2] The river has Oregon's longest covered bridge crossing it at Westfir, the Office Bridge. [3] Portions of the river were designated wild and scenic in 1988.
The Willamette Valley ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency in the U.S. states of Oregon and Washington.Slightly larger than the Willamette Valley for which it is named, the ecoregion contains fluvial terraces and floodplains of the Willamette River system, scattered hills, buttes, and adjacent foothills.