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The North Fork Toutle River is a tributary of the Toutle River in southwestern Washington in the United States. The river has its headwaters near Spirit Lake, on the north side of Mount St. Helens, and flows 39 miles (63 km) to the Toutle River, [3] about 17 miles (27 km) upstream of its confluence with the Cowlitz River. [4]
The Green River is the largest tributary of the North Fork Toutle River in the U.S. state of Washington.Situated near Mount St. Helens in the Cascade Range in the southern part of the state, it flows generally west through Mount St. Helens National Volcanic Monument and industrial timberlands for 37.4 miles (60.2 km).
The Toutle River begins at the confluence of the North Fork Toutle River and the South Fork Toutle River near the community of Toutle. The forks originate on Mount St. Helens in Mount St. Helens National Volcanic Monument, and flow generally west to form the main stem, which continues generally west, with significant north–south deviations.
Prior to 1980, Spirit Lake consisted of two arms that occupied what had been the valleys of the North Fork Toutle River and a tributary. About 4,000 years ago, these valleys were blocked by lahars and pyroclastic flow deposits from Mount St. Helens to form the pre-1980 Spirit Lake. The longest branch of Spirit Lake was about 2.1 miles (3.4 km ...
The Sediment Retention Structure is an earthen dam, 1,888 feet (575 m) long and 184 feet (56 m) high, on the North Fork Toutle River in the U.S. state of Washington. [1] Completed by the United States Army Corps of Engineers in 1989, it is meant to prevent sediment from the 1980 eruption of Mount St. Helens from increasing flood risks along the ...
The river begins in the Blue Mountains in a ravine just east of Ski Bluewood. [3] It flows north, past the Touchet Corral Sno-Park, [4] in a narrow valley between Chase Mountain to the west and Middle Point Ridge to the east. [3] It is joined by Spangler, Lewis and Jim Creeks from the right before receiving the Wolf Fork from the left. [5]
The sediment retention structure on the North Fork of the Toutle River. The dam is approximately 22 miles (35 km) upriver from the confluence of the Toutle and the Cowlitz. A serious side effect of the Mount St. Helens 1980 eruption has been the downstream movement of enormous amounts of sediment through the North Fork Toutle River. After the ...
The North Fork Clearwater River is a major tributary of the Clearwater River in the U.S. state of Idaho. [1] From its headwaters in the Bitterroot Mountains of eastern Idaho, it flows 135 miles (217 km) [ 2 ] westward and is dammed by the Dworshak Dam just above its mouth in north-central Idaho.