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The southern and eastern sides of the volcano drain into an upstream impoundment, the Swift Reservoir, which is directly south of the volcano's peak. Although Mount St. Helens is in Skamania County, Washington, access routes to the mountain run through Cowlitz County to the west, and Lewis County to the north.
Pages in category "Volcanoes of Washington (state)" The following 40 pages are in this category, out of 40 total. This list may not reflect recent changes. *
The volcano is the fourth tallest peak in Washington state, and not as much is known about it compared to other volcanoes in the area. Local Native Americans have recognized Glacier Peak and other Washington volcanoes in their histories and stories. When American explorers reached the region, they learned basic information about surrounding ...
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The purpose of the warning system is to assist in the evacuation of residents in the river valleys around Mount Rainier, a volcano in Washington, in the event of a lahar. Pierce County works in partnership with the USGS, the Pacific Northwest Seismic Network (PNSN), Washington Military Department's Emergency Management Division, and South Sound ...
On a clear day from the summit, other visible volcanoes in the Cascade Range include: Mount Rainier, Mount Baker, and Glacier Peak to the north, as well as Mount St. Helens to the west, all in Washington; and Mount Hood, Mount Jefferson, and the Three Sisters, all to the south in Oregon.
The volcanic region stretches a north–south distance of approximately 45 mi (72 km) from near Goldendale, Washington in the south to include part of the Yakama Indian Reservation in the north. It is centered 28 mi (45 km) east of Mount Adams, a major Cascade Volcano, and covers a land area of 640 sq mi (1,700 km 2). [8] [3]
Tumtum Mountain is a small, highly-symmetrical volcanic cone in Washington, United States.Located in northern Clark County at the easternmost end of Chelatchie Prairie, it rises to an elevation of 2,004 feet (611 m), about 1,400 feet (430 m) above the flat prairie. [1]