The river and its principal tributaries drain 11,478 square miles (12 percent of Oregon), with the basin's runoff fluctuating dramatically between the heavy precipitation of the winter months and relatively rain-free summers. About 1 mile (2 km) further downstream, Dove's Bar is on the right and Hayden Island on the left before The river arrives at Spongs Landing County Park, then Spongs Bar and Lincoln Bar before passing Windsor Island and receiving Spring Valley Creek from the left at about RM 75 (RK 121).


The Willamette's main stem is 187 miles (301 km) long, lying entirely in northwestern Oregon in the United States. The gradient is slightly steeper from the source to Albany than from Albany to Oregon City. Not only is the Willamette River beautiful, but there are a lot of activities to enjoy!

5. About thE WillAMEttE The Willamette is a vital, multi-purpose waterway that touches the lives of millions of people.

At RM 113 (RK 182), Wilson Lake is on the right, and about 2.5 miles (4.0 km) further downstream, the Willamette leaves Benton County and becomes the boundary between Linn County, on the right, and Fuller Creek enters from the right about 5 miles (8.0 km) later.





PORTLAND, Ore. (KOIN) -- This year marks the 10th anniversary of the Human Access Project, which was formed to encourage people to swim and play in the Willamette River.

Read more.



The forest mainland area accounts for approximately around 37% of the river valley, and covers the area with Oregon ash, Black Cottonwood, and willows.

Slightly further downstream, the Willamette becomes the boundary between Marion County on the right and At Newberg the river, which has been meandering north from Eugene, turns sharply east, passes under a pipeline bridge and, about 2 miles (3 km) later, under The river flows by Abernethy Island and Moore's Island and by a USGS stream gauge before plunging about 40 feet (12 m) over the falls.Below Milwaukie, the river passes between Sellwood, on the right, and the Downstream of the Broadway Bridge, the river flows under the In its first 0.5 miles (0.80 km), the channel receives Miller Creek from the left, then passes under A gauge at RM 161 (RK 259) in Harrisburg recorded an average flow of 11,630 cubic feet per second (329 mDuring the 115 years of 1894 plus 1896–2009, the average discharge recorded by a gauge at the Ellsworth Street Bridge in Albany, Oregon, at RM 119.31 (RK 192.01), was 14,210 cubic feet per second (402 mA gauge at RM 84.16 (RK 135.44), near the Center Street Bridge in downtown Salem recorded an average discharge of 23,250 cubic feet per second (658 mThe average discharge at a gauge near the Morrison Bridge in Portland was 22,590 cubic feet per second (640 mA map of the Willamette River, its drainage basin, major tributaries and major citiesLocation of the mouth of the Willamette River in Oregon



The cleanup is part of the Willamette River Downtown Reach project.

The Willamette River is said to be one of the most important tributaries of the Columbia River, and is one of the most important water bodies to be seen flowing through the state of Oregon in the The Willamette River Valley was habitated by the Chinook, Clackamas and the Kalapuya peoples, who lived in the area for as long as approximately 10,000 years ago. The main occupation of the people who were living in the area was fishing so as to maintain their sustenance and economic stability. History at your fingertips

Download the School Profile for Willamette Connections Academy; 2020–21 School Year Start: September 8, 2020 The Willamette River ( wil-LAM-it) is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow.


The native river is the main source of fishing, and it includes a variety of native species which are approximately 31 in number, and these include the "vulnerable" Bull trout, Rainbow trout, various species of salmon, and lampreys.


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