Slopes range from 0 to 3 percent. Bergstrom silty clay loam - cultivated. Thickness of the solum ranges from 50 to about 80 inches. The mollic epipedon ranges from 20 to 48 inches. The A horizon has hue of 7.5YR or 10YR, value of 3 to 5 and chroma of 2 or 3.
Texture is silt loam, or silty clay loam.
The Bw, and Bk horizon where present, have hue of 5YR, 7.5YR or 10YR, value of 3 to 5 and chroma of 2 to 6. Texture is silt loam, silty clay loam, or clay loam. The C horizon is brownish, yellowish, or reddish silt loam or silty clay loam with strata of more clayey or sandy sediments. Similar soils are the Bippus , Bosque , Gageby , Gowen and Whitesboro series. Biggetty and Iraan soils are dry in the moisture control section for longer periods.