Zumwalt Prairie, OR
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Columbia Basin Ecological Province

The basin draining north into the Columbia River in north-central Oregon.  it is characterized by basaltic hilly uplands and a sizable sandy basin west of the Hermiston area that are dissected by six major drainages flowing into the Columbia River.  Elevations in Oregon range from about 100 feet along the Columbia River to about 3,500 feet.

Overview of extensive dryland farming area within Columbia Basin Province, Oregon.  Washington state, north of the columbia River is in t he background.

Biscuit scabland is extensive in Columbia Basin Province, Oregon.

A cross section of a typical biscuit scabland in Columbia Basin Province, Oregon.  it shows the massive basalt underlying both the biscuits of soil and the adjacent scablands.

Managed natural upland grasslands in Columbia Basin Province, Oregon.

 

Information and photos from: Anderson, E.W., Borman, M.M., and Krueger, W.C. 1998. The ecological provinces of Oregon: A treatise on the basic ecological geography of the state. Oregon Agricultural Experiment Station. SR 990. Corvallis, Oregon, USA.

 
Small Oregon topographic mapOregon Home Page URL: http://oregonrangelands.org/Ecological_Provinces/ColumbiaBasinEcologicalProvince.html
Last Revised: September 9, 2004