The mean annual temperature is about 48 degrees F. and the mean annual precipitation is 80 to 120 inches. Palix silt loam on east facing 16 percent slope under coniferous forest at 360 feet elevation. All textures are apparent field textures. Thickness of the solum and depth to a paralithic contact are 40 to 60 inches. The 10 to 40 inch control section has 27 to 35 percent clay.
Soil reaction is very strongly acid or extremely acid.
The umbric epipedon is 12 to 20 inches thick. Structure is subangular blocky or granular. It is silty clay loam or clay loam and contains 20 to 80 percent soft siltstone fragments. Structure is angular or subangular blocky. These are the Astoria , Boistfort , Bunker , Elochoman , Ilwaco , Kinney , Knappton , Lebam , LeBar, Lytell , Narel , Silcox , Swem , Sylvia , Vesta , Wahkiakum, Wellman , Willapa , and Zenker series.