Components of the units that are explicitly shown by map are soil, slope, present vegetation, and potential vegetation. Characteristics which are implicitly shown include microclimate, geology, geomorphology, and wildlife. The small biophysical units are aggregated to form biophysical regions. All biophysical entities are essentially ecosystem units. Slope, soil, and geomorphology provide the essential data needed for engineering decisions.
Vegetation is used as an indicator of bioclimate, habitat, aesthetics, site productivity, etc.
Biophysical cross-sections of each of the regions are presented. It was found that at least 75 percent of the land is unsuitable for urban-related development. This portion would best be managed for wildlife habitat, recreational use, and its natural beauty. The remaining land has varying degrees of potential for development. The biophysical approach supplies the foundation needed for making land-use decisions in light of the ecological character of the land.