The average annual precipitation ranges from 70 to 120 inches. These are the Elochoman and Lytell soils. Elochoman soils are less than 15 percent sand and 0 to 15 percent coarse fragments in the particle-size control section. Lytell soils have 27 to 35 percent clay in the particle-size control section. Native vegetation is mostly Douglas-fir and western hemlock and minor amounts of red alder, western redcedar, Sitka spruce, and bigleaf maple with an understory of vine maple, western swordfern, Oregongrape, salmonberry, western brackenfern, red elderberry, salal, red huckleberry, Oregon oxalis and starflower.
Series is of moderate extent.
Wahkiakum County, Washington, 1976. Diagnostic horizons and features recognized in this pedon are an umbric epipedon from the mineral surface to 17 inches and a cambic horizon from 17 to 60 inches. This description reflects a change in classification based on amendment 16. Riverside Laboratory data is available for this soil, sample number R75-123.