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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. 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.
An aerial view of the Willamette River's flood. The Willamette Valley flood of 1996 was part of a larger series of floods in the Pacific Northwest of the United States which took place between late January and mid-February 1996. It was Oregon 's largest flood event in terms of fatalities and monetary damage during the 1990s.
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. Formed by the confluence of the Middle Fork Willamette River and Coast Fork Willamette River near Springfield ...
High water floods a pathway in Minto Brown Island Park on Thursday, Jan. 14, 2021. High water from rain caused the level of the Willamette River to reach near action levels and caused trails ...
A fourth atmospheric river is forecast to hit Oregon this ... Concerns aren’t nearly as high about additional flooding in the Willamette Valley. The level of the Willamette River in Salem, for ...
Date. 20 days. December 18, 1964. ( 1964-12-18) – January 7, 1965. ( 1965-01-07) Location. California, Oregon, and Washington states. The Christmas flood of 1964 was a major flood in the United States' Pacific Northwest and some of Northern California between December 18, 1964, and January 7, 1965, spanning the Christmas holiday.
Great Flood of 1862. The Great Flood of 1862 was the largest flood in the recorded history of California, Oregon, and Nevada, inundating the western United States and portions of British Columbia and Mexico. It was preceded by weeks of continuous rains and snows that began in Oregon in November 1861 and continued into January 1862.
As the water emerged from the Columbia River gorge, it backed up again at the 1 mile (1.6 km) wide narrows near Kalama, Washington. Some temporary lakes rose to an elevation of more than 400 ft (120 m), flooding the Willamette Valley to Eugene, Oregon, and beyond.