Soil temperature regimes are mostly mesic. Soil moisture regimes are mostly xeric, but aquic on basin floors. The predominant natural plant community is Mixed conifer series with Ponderosa pine series on south-facing slopes and Jeffrey pine series on ultramafic rocks. Jeffrey pine series is also common in the drier southeast part of the subsection. There is some White fir series at higher elevations.
Canyon live oak series occurs on steep rocky slopes.
The most common streamside riparian communities are Black cottonwood series in the northwestern part and White alder series in the southeastern part of the subsection. Sedge meadow communities occur in wet areas. The mean freeze-free period is about 75 to 150 days. Surface Water . Runoff is rapid from most of the area, but slow on basin floors.