Zumwalt Prairie, OR
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Owyhee Ecological Province

The western foothills and associated plains of the Owyhee Mountains, which are in southwestern Idaho.  it is characterized by extensive, very rocky uplands sloping down to the west and by numerous basalt-rim canyons, lava fields, rhyolites, and a few ancient lake basins, and some mountainous areas.  Elevations in Oregon range from about 4,000 feet to 6,168 feet on the Mahogany Mountains.  Most of the province lies between 4,000 and 5,000 feet elevation.

 

A dense, vigorous stand of basin wildrye and Nevada bluegrass on a bottom land in the vicinity of Jordan Valley.  The man standing in the grass is Bud Town, NRCS Range Conservationist.

Groves of curlleaf mountain-mahogany on Mahogany Mountains in the northern portion of Owyhee Province.

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/OwyheeEcologicalProvince.html
Last Revised: September 9, 2004