Chiwaukum soils are on mountainsides and have slopes of 3 to 65 percent. Chiwaukum fine sandy loam-forested on a 34 percent north facing slope at an elevation of 3,100 feet. These soils are dry for an estimated 45 to 60 consecutive days following summer solstice. Depth to the 2C horizon is 20 to 36 inches. The lower part of the particle-size control section averages 35 to 75 percent coarse fragments.
Texture is fine sandy loam or sandy loam and is gravelly, cobbly, stony or cindery.
It is slightly acid to strongly acid. Texture is sandy loam or fine sandy loam and is cobbly, gravelly or cindery. It is moderately acid to slightly acid. Texture of the fine- earth fraction is coarse sandy loam, or sandy loam. It is very gravelly, extremely gravelly, very cobbly, extremely cobbly, very stony, or extremely stony.