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The gradient is slightly steeper from the source to Albany than from Albany to Oregon City. At Willamette Falls, the river plunges about 40 feet (12 m). For the rest of its course, the river is extremely low-gradient and is influenced by Pacific Ocean tidal effects from the Columbia. The main stem of the Willamette varies in width from about ...
Willamette Valley map showing main stem and major tributaries. The Willamette River drains a region of 11,478 square miles (29,730 km 2), which is 12 percent of the total area of Oregon. [4] Bounded by the Coast Range to the west and the Cascade Range to the east, the river basin is about 180 miles (290 km) long and 100 miles (160 km) wide. [13]
Rickreall Creek is a stream in Polk County, Oregon, United States rising on Laurel Mountain in the Central Oregon Coast Range and draining into the Willamette River west of Salem at Eola. [1] The creek passes through the city of Dallas and the unincorporated community of Rickreall.
Image Crossing Carries Location River mile Year built Coordinates OR 99E bridge OR 99E, sidewalk : Harrisburg: 161.2 1925 Oregon Electric rail bridge; former vertical-lift type, now fixed in place
Stephens Creek, a 2-mile (3 km) tributary of the Willamette River, flows entirely within the city of Portland in the U.S. state of Oregon. [6] Beginning in the neighborhood of Hillsdale, it runs generally east through residential and commercial neighborhoods as well as patches of forest and parkland to join the Willamette slightly north of the Sellwood Bridge. [6]
The Coast Fork Willamette River is formed in southwestern Lane County, in the Calapooya Mountains, by the confluence of the Little River and the Big River.The Coast Fork flows north through the mountains, through the Cottage Grove Lake reservoir, to Cottage Grove, where it receives the Row River from the southeast.
The system is expected to dump 2-3 inches of rain in the Willamette Valley, with upward of 4-6 inches in the Coast Range and Coast. ... The Willamette River reached nearly 19 feet near the ...
The Middle Fork Willamette River is one of several forks that unite to form the Willamette River in the western part of the U.S. state of Oregon.It is approximately 115 miles (185 km) long, [1] draining an area of the Cascade Range southeast of Eugene, which is at the southern end of the Willamette Valley.