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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]
The Willamette River is a 187-mile (301 km) tributary of the Columbia River in the U.S. state of Oregon. The upper tributaries of the Willamette originate in mountains south and southeast of the twin cities of Eugene and Springfield .
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.
The Middle Fork Willamette River is formed in northeastern Douglas County by the joining of several small headwater streams near Emigrant Pass.The river flows generally north into Lane County, through the Calapooya Mountains, to the vicinity of Eugene and Springfield, where it joins the Coast Fork Willamette River to form the Willamette River proper.
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. [ 4 ] [ 5 ] The portion from Waldo Lake to 1 mile (1.6 km) upstream from Westfir is designated scenic by the State of Oregon [ 6 ] and is known for its native trout by fly fishermen.
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In areas that are open for retention of coho salmon in the Willamette River basin upstream of Willamette Falls, anglers with a valid 2024 Oregon two-rod validation may fish with two rods including ...
The Willamette River in Salem is forecast to reach about 19 feet, which brings some impact in the Minto Brown Island area. The Willamette River reached nearly 19 feet near the Wheatland Ferry in ...