Bachus, Benteen, Vadnais, and Winu soils have a lithic contact at depths of less than 40 inches. Cambern, Echemoor, Squawval, and Stubbs soils have a paralithic contact at depths of less than 40 inches. Gordo soils have hue of 5YR or 2.5YR in the B2t horizon. Clayburn, Crystalbutte, Dehana, Demast, Dranyon, Southmount, and Thulepah soils are noncalcareous throughout. Millerlake soils lack a calcic horizon.
Decross soils are on relict alluvial fans, fan aprons, and pediment toeslopes.
Slopes are 0 to 60 percent. The soils formed in alluvium from limestone. Elevation is 5,600 to 9,000 feet. The average annual precipitation is about 15 to 24 inches. The frost-free season is estimated at 30 to 70 days depending upon elevation, aspect, and air drainage.