The frost-free period is 140 to 210 days. These are the Halbert , Nordby , Nemah , O'Brien , amd Willaby soils. Halbert and Nemah soils are poorly drained. Nordby, O'Brien, and Willaby soils lack medial properties in the control section. A perched water table is present at 2.0 to 3.0 feet from November to April.
Principal uses are timber production, wildlife habitat, watershed and recreation.
The major tree species are western hemlock and Sitka spruce. Other species include Douglas-fir, western redcedar and red alder. Understory species include salal, western swordfern, vine maple, red huckleberry and Oregon grape. Series is of moderate extent. Reconnaissance of the western part of the Puget Sound Basin, Washington, 1910.