Oregon topographic maps

Average elevation: 404 m

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Average elevation: 11 m

The primary purpose of the dam is flood control and is operated in conjunction with Applegate Dam to regulate water flows down the river as well as to impound water for summer use. The dam is an earthfill structure with a gated spillway and contains two hydroelectric generating units with a total capacity of…

Average elevation: 729 m

Average elevation: 640 m

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Average elevation: 201 m

Wilsonville is located on the southern edge of the Portland metropolitan area sitting at an elevation of 154 feet (47 m) above sea level. Primarily in the southwestern part of Clackamas County, the northern section is in Washington County. It is located on the north side of the Willamette River around where…

Average elevation: 60 m

Average elevation: 111 m

Solidified lava from Grande Ronde members of the Columbia River Basalt Group underlie Forest Park. About 16 million years ago during the Middle Miocene, the Columbia River ran through a lowland south of its modern channel. Eruptions from linear vents in eastern Oregon and Washington flowed down this channel…

Average elevation: 91 m

Average elevation: 1,549 m

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Average elevation: 1,025 m

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Average elevation: 669 m

Average elevation: 120 m

Average elevation: 21 m

Average elevation: 811 m

Pittsburg is an unincorporated community in Columbia County, Oregon, United States. Pittsburg is located on the Nehalem River near its confluence with the East Fork Nehalem River. The Scappoose-Vernonia road and the St. Helens-Pittsburg road join Oregon Route 47 near Pittsburg. Pittsburg's elevation is 584…

Average elevation: 233 m

Average elevation: 415 m

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Average elevation: 1,480 m

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Average elevation: 39 m

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Average elevation: 1,389 m

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Average elevation: 1,112 m

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Average elevation: 1,888 m

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Average elevation: 1,295 m

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Average elevation: 1,378 m

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Average elevation: 841 m

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Average elevation: 211 m

Average elevation: 55 m