Columbia

Taxonomic class

Coarse-loamy, mixed, superactive, nonacid, thermic Oxyaquic Xerofluvents 

Parent material

Alluvium from mixed sources

Topography

Flood plains and natural levees

Geographic extent

These soils are moderately extensive and occur in the central valley of California

Use

Irrigated orchards, hay, small grains and row crops

Vegetation

Oaks, cottonwood, willow, vines, shrubs, and grasses

Climate

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