Hydrologic landscape regions of Nevada

Hydrologic landscape regions group areas according to their similarity in landscape and climate characteristics. These characteristics represent variables assumed to affect hydrologic processes in the environment. Hydrologic landscape regions in Nevada were delineated using geographic information system tools and statistical methods including cluster analysis. The data layers of hydrogeology, precipitation, soil permeability, land surface slope and aspect were used to identify the hydrologic landscape regions. Sixteen hydrologic landscape regions were identified through cluster analysis. The hydrologic landscape regions are noncontiguous in nature and can range from small areas which tend to be in the mountain ranges to very large areas in the basins.