The frost-free period is 135 to 175 days. These are the Curhollow , Havasupai and Winona soils. Curhollow and Havasupai soils are shallow to a calcium carbonate cemented hardpan. Winona soils have limestone bedrock at depths less than 20 inches. Quagwa soils are used for livestock grazing and wildlife habitat.
Present vegetation is blue grama, sand dropseed, burrograss and fourwing saltbush.
The series is of limited extent.