The Hall series consists of very deep, well drained soils that formed in loess or silty alluvium.
Permeability is moderate.
These soils are on uplands and stream terraces and have slopes ranging from 0 to 6 percent. Mean annual temperature is about 51 degrees F, and mean annual precipitation is about 24 inches at the type location. Hall silt loam, with a slope of less than 1 percent, in an irrigated field of cultivated crops. Thickness of the solum ranges from 27 to 60 inches. The solum lacks free carbonates, but carbonates are in the C horizon of most pedons.