The mean annual temperature is 57 to 64 degrees F. and mean annual precipitation is 15 to 18 inches. Frost free period is 180 to 205 days. These include the Randall, Arch, Drake, and Portales series. The Arch, Drake and Portales soils are on higher positions and are well drained. The Randall soil occupies the lowest portion of the playa and has severe cracking with gilgai and is poorly drained.
Native vegetation is western wheatgrass, alkali sacaton, inland saltgrass and alkali muhly.
The High Plains of eastern New Mexico and northwest Texas. The series is moderately extensive. Aquic moisture regime - low chroma and high value matrix. Endo feature - saturated all layers not perched.