Abilene and Amarillo anchor very different parts of the state's dry western half. Both sit on clay-rich soils that rate high for shrink-swell in the soil survey.

Around Abilene a restrictive layer such as caliche is mapped within about three feet at every sampled soil unit with data, and half of sampled points rate high or very high. Around Amarillo, Pullman soil dominates and nearly two-thirds of sampled points rate high or very high.

Across the 2 West Texas and the Panhandle cities profiled here, the soil survey rates shrink-swell high around 2, moderate around 0 and low around 0.