The average annual precipitation is 15 to 25 inches. The frost-free season is less than 90 days. These are the Decross and Sawcreek soils. Decross soils lack bedrock at depths of less than 40 inches and have continuous horizons of carbonate accumulations. Sawcreek soils have mollic epipedons 7 to 15 inches thick and lack argillic horizons.
Native vegetation is green needlegrass, Idaho fescue, and yarrow.
The series is of moderate extent.