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North Plains is a city in Washington County, Oregon, United States, off U.S. 26 on the northwest outskirts of the Portland metropolitan area. The population was 3,441 at the 2020 census . History
Map of California topography and geomorphic provinces California's major mountain ranges. California is a U.S. state on the western coast of North America.Covering an area of 163,696 sq mi (423,970 km 2), California is among the most geographically diverse states.
Looming large in pale yellow is the vast Oregon Territory — until only recently jointly administered by the U.S. and Great Britain and stretching up to the 54º 40' parallel of North latitude. For this area, the map largely followed the printed map of Oregon from the report of Charles Wilkes's expedition.
USGS map colored by paleogeological areas and demarcating the sections of the U.S. physiographic regions: Laurentian Upland (area 1), Atlantic Plain (2-3), Appalachian Highlands (4-10), Interior Plains (11-13), Interior Highlands (14-15), Rocky Mountain System (16-19), Intermontane Plateaus (20-22), & Pacific Mountain System (23-25) The legend ...
The region is bounded by the Wasatch Mountains to the east, the Sierra Nevada and Cascade Ranges to the west, and the Snake River Basin to the north. The south rim is less distinct. The Great Basin includes most of Nevada, half of Utah, substantial portions of Oregon and California, and small areas of Idaho, Wyoming, and Baja California, Mexico ...
The interior regions' climates largely within Eastern Washington, south central British Columbia, Eastern Oregon, and southern Idaho are a part of the Great Basin Desert, although by their northern and eastern reaches, dry land and desert areas verge at the end of the Cascades' and Coast Mountains' rain shadows with the boreal forest and ...
The task of defining and mapping these ecoregions was carried out by the Oregon Ecoregion Project, a collaborative effort involving the EPA, the United States Geological Survey (USGS), the United States Forest Service (USFS), and other state and federal agencies. The new classification system they developed may differ from previous frameworks ...
The high desert of Oregon is located in the central and southeastern parts of the state. It covers approximately 24,000 square miles (62,000 km 2), extending approximately 200 miles (320 km) from central Oregon east to the Idaho border and 130 mi (210 km) from central Oregon south to the Nevada border. [1]