Chard soils are coarse-loamy. Oliphant soils have a zone of calcium carbonate accumulation beginning at a depth of 15 to 44 inches. Onyx soils are on associated flood plains and have mollic epipedons more than 20 inches thick. Nansene soils are on steep north slopes and have mollic epipedons thicker than 20 inches. Spofford soils have natric horizons.
Walvan soils are dominantly volcanic ash.
Used for dryland cropland, irrigated cropland and some is used for range. Native vegetation is bluebunch wheatgrass, Sandberg bluegrass, big bluegrass, arrowleaf balsamroot, western yarrow, and sagebrush. Southeastern Washington and northeastern Oregon. Series is extensive. Walla Walla County, Washington, 1902.