Eastern Cascades Slopes and Foothills Ecoregion: Chapter 12 in <i>Status and trends of land change in the Western United States--1973 to 2000</i>

Sorenson, Daniel G.

Abstract:

The Eastern Cascades Slopes and Foothills Ecoregion (Omernik, 1987; U.S. Environmental Protection Agency, 1997) covers approximately 57,329 km² (22,135 mi²) in the states of Washington, Oregon, and California (fig. 1). The ecoregion is bounded on the east by the Columbia Plateau, Blue Mountains, and Northern Basin and Range Ecoregions; on the south by the Sierra Nevada Ecoregion; on the west by the Klamath Mountains and Cascades Ecoregions; and on the north by the North Cascades Ecoregion (fig. 1). Because the Eastern Cascades Slopes and Foothills Ecoregion lies within the rain shadow of the Cascade Range, the annual amount of precipitation varies greatly, from 500 mm in the eastern and southern sections of the ecoregion to 3,000 mm in the area bordering the higher Cascade Range to the west. Precipitation (either rain or snow) falls mostly in the fall, through winter into spring. Elevations range from near sea level at the Columbia River to more than 3,300 m; most of the region is between 900 and 2,000 m high. In the plateaus, elevation generally varies from 60 to 600 m (McNab and Avers, 1994).

Genre:

USGS Numbered Series

ProdID:

70042598

Citation Author:

Sorenson, Daniel G.

Citation Contributing Office:

Western Geographic Science Center

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Citation End Page:

139

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Citation Language:

English

Citation Larger Work Title:

Status and trends of land change in the Western United States--1973 to 2000: Volume A in Status and trends of land change in the United States--1973 to 2000 (PP 1794-A)

Citation LatN:

48.0

Citation LatS:

40.5

Citation LonE:

-120.0

Citation LonW:

-122.75

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Citation Phsyical Description:

Chapter 12: 7 p.

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Citation Public Comments:

This publication is Chapter 12 in Status and trends of land change in the Western United States--1973 to 2000, which is Volume A in Status and trends of land change in the United States--1973 to 2000, PP 1794. Volume A consists of 30 chapters. For access to other chapters, please visit PP 1794-A.

Citation Publisher:

U.S. Geological Survey

Citation Series:

Professional Paper

Citation Series Code:

Citation Series Number:

1794-A-12

Citation Search Results Text:

Eastern Cascades Slopes and Foothills Ecoregion: Chapter 12 in Status and trends of land change in the Western United States--1973 to 2000; 2012; PP; 1794-A-12; Status and trends of land change in the Western United States--1973 to 2000: Volume A in Status and trends of land change in the United States--1973 to 2000 (PP 1794-A); Sorenson, Daniel G.