Abstract: Wetlands for the Nemah watershed based on the SOILS data layer was derived from the Private Forest Land Grading Program (PFLG) and subsequent soil surveys. State and private lands, which had the potential of supporting commercial forest stands, were surveyed by PFLG. Some tribal and Federal lands were also surveyed. Because this was a cooperative soil survey project, agricultural and non-commercial forestlands were also included within some survey areas.Code 0 = no data, 1 = muck, 2 = peat, 10 = clay, 11 = silty clay, 12 = sandy clay, 13 = silty clay loam, 14 = clay loam, 15 = sandy clay loam, 16 = silt, 17 = silt loam, 18 = loam, 19 = very fine sandy loam, 20 = fine sandy loam, 21 = sandy loam, 22 = coarse sandy loam, 23 = loamy fine sand, 24 = loamy sand, 25 = loamy coarse sand, 26 = sand, 89 = other, 99 = variable. SOILS24.35 M-SOIL.MAJ.SPEC.CODE: first major commercial potential tree. Code Description: AF = Subalpine fir, DF = Douglas fir, GF = Grand fir, GP = gravel pit, LP = Lodgepole pine, MFP = Marginal forest productivity, NA = not applicable, NC = non-commercial, ND = no data, PP = Ponderosa pine, RA = Red alder, WAT = water, WH = Western Hemlock, WL = Western Larch, WP = Western White pine. SOILS24.35 PRNT.MAT.SPF.CD.CODE: specific characteristics of parent material. Code Description: 0 = no data, 1 = variable, 5 = beach deposits, 10 = bedrock, 11 = basic igneous bedrock (basalt/andesite/gabbro/dunite), 12 = acidic igneous bedrock (granite/rhyolite/granodiorite), 13 = breccia and/or tuff, 14 = non-carboniferous sedimentary bedrock (sandstone/siltstone/graywacke), 15 = carboniferous sedimentary bedrock (limestone/dolomite), 16 = hard shaley bedrock (shale/slate/phyllite/argillite), 17 = carboniferous shaley bedrock (e.g. calcareous shales), 18 = crystalline metamorphic bedrock (e.g. gneiss/schist), 19 = high magnesium bedrock (e.g. serpentine), 20 = glacial drift covering material described in code 10, 21 = glacial drift covering material described in code 11, 22 = glacial drift covering material described in code 12, 23 = glacial drift covering material described in code 13, 24 = glacial drift covering material described in code 14, 25 = glacial drift covering material described in code 15, 26 = glacial drift covering material described in code 16, 27 = glacial drift covering material described in code 17, 28 = glacial drift covering material described in code 18, 29 = glacial drift covering material described in code 19, 30 = volcanic ash and/or pumice and/or loess covering material described in code 10, 31 = volcanic ash and/or pumice and/or loess covering material described in code 11, 32 = volcanic ash and/or pumice and/or loess covering material described in code 12, 33 = volcanic ash and/or pumice and/or loess covering material described in code 13, 34 = volcanic ash and/or pumice and/or loess covering material described in code 14, 35 = volcanic ash and/or pumice and/or loess covering material described in code 15, 36 = volcanic ash and/or pumice and/or loess covering material described in code 16, 37 = volcanic ash and/or pumice and/or loess covering material described in code 17, 38 = volcanic ash and/or pumice and/or loess covering material described in code 18, 39 = volcanic ash and/or pumice and/or loess covering material described in code 19, 40 = volcanic ash and/or loess and glacial drift covering material described in code 10, 41 = volcanic ash and/or loess and glacial drift covering material described in code 11, 42 = volcanic ash and/or loess and glacial drift covering material described in code 12, 43 = volcanic ash and/or loess and glacial drift covering material described in code 13, 44 = volcanic ash and/or loess and glacial drift covering material described in code 14, 45 = volcanic ash and/or loess and glacial drift covering material described in code 15, 46 = volcanic ash and/or loess and glacial drift covering material described in code 16, 47 = volcanic ash and/or loess and glacial drift covering material described in code 17, 48 = volcanic ash and/or loess and glacial drift covering material described in code 18, 49 = volcanic ash and/or loess and glacial drift covering material described in code 19, 50 = glacial drift, 51 = glacial till, 52 = glacial outwash, 53 = glacial lake sediments, 54 = glacio-marine sediments, 55 = volcanic ash and/or loess over glacial drift, 56 = volcanic ash and/or loess over glacial till, 57 = volcanic ash and/or loess over glacial outwash, 58 = volcanic ash and/or loess over glacial lacustrine sediments, 59 = glacial lacustrine deposits over glacial till, 60 = coarse textured and/or relatively unweathered pyroclasts, 61 = fine textured and/or highly weathered volcanic ash, 62 = deep pumice and/or volcanic ash (>40") on residual colluvium, 63 = layers of aeolian ash and pumice, 64 = aeolian pumice over highly weathered volcanic ash, 65 = 1980 Mt. St. Helen's ashfall over upland soil types, 66 = alkaline loess, 67 = aeolian sand, 68 = loess, 70 = pre-1980 volcanic mudflow deposits, 71 = volcanic ash over pre-1980 volcanic mudflow deposits, 72 = 1980 Mt. St. Helen's volcanic mudflow deposits, 80 = mucks 81 = mucks over alluvium, 82 = peat or decomposed organic material, 83 = decomposed organic material with layers of non-organic material, 84 = diatomaceous earth, 90 = alluvium (mixed alluvium), 91 = gravelly or cobbly alluvium (e.g. fan deposits), 92 = sandy alluvium, 93 = silty alluvium, 94 = clayey or fine textured or fine textured old alluvium, 95 = sandy alluvium over sand and gravel, 96 = silty alluvium over sand and gravel, 97 = clayey or fine textured alluvium over sand and gravel, 98 = alluvium consisting primarily of volcanic ash, 99 = alluvium covered by volcanic ash and/or loess. SOILS24.35 DRAIN.RATE.CD: soil drainage rate. Code Description: 0 = no data, 1 = very poorly drained, 2 = poorly drained, 3 = somewhat poorly drained, 4 = moderately well drained, 5 = well drained, 6 = somewhat excessively drained, 7 = excessively drained, 8 = N/A, 9 = variable - refer to public WDNR Soil Survey. SOILS24.35 PERC.RATE.CD: soil percolation rate. Code Description: 0 = no data, 1 = very slow water percolation (< 0.06"/hr), 2 = slow water percolation (0.06 - 0.2"/hr), 3 = moderately slow water percolation (0.2 - 0.6"/hr), 4 = moderate water percolation (0.6 - 2.0"/hr), 5 = moderately rapid water percolation (2.0 - 6.0"/hr), 6 = rapid water percolation (6.0 - 20.0"/hr), 7 = very rapid water percolation (> 20.0"/hr), 8 = N/A, 9 = variable - refer to public WDNR Soil Survey. SOILS24.39 PFLG.OPRL.CD: influence of soil type on forest operations. Code Description: 0 = not rated. 1 = Favorable. Stable soils sloping < 30 percent. Forest operations (roading, load, etc.) do not significantly impact soil productivity or erosion, and are carried out with minimal limitations. 2 = Average. Includes stable soils sloping < 30 percent, but on which significant erosion, compaction, or displacement might occur as a result of forest operations. 3 = Difficult. This is characterized by one of the following: a) stable soils sloping (30-65 percent) or, b) soils sloping (0-65) percent and showing evidence that rapid movement might occur as a direct result of forest operations. 4 = Extreme. All soils sloping more than 65 percent. PFLG.SURV.CD: soil survey area designation. Code Description: 2 = Asotin, 4 = Chelan, 5 = Clallam, 6 = Clark, 7 = Columbia, 8 = Cowlitz, 10 = Ferry, 12 = Garfield, 15 = Island, 18 = Kitsap, 19 = Kittitas, 20 = Klickitat, 21 = Lewis, 22 = Lincoln, 23 = Mason, 24 = Okanagan, 26 = Pend Oreille, 28 = San Juan, 29 = Skagit, 30 = Skamania, 31 = Snohomish, 32 = Spokane, 33 = Stevens, 34 = Thurston, 36 = Walla Walla, 37 = Whatcom, 39 = Yakima, 50 = West Jefferson, 51 = East Jefferson, 52 = Tri-County (Grays Harbor/Pacific/Wahkiakum), 53 = West Pierce, 54 = Snoqualmie Pass (East Pierce and East King), 55 = West King, 56 = SCS Whatcom Soil Survey Area.
Purpose: For identification of wetland soil types based on the 1977 SCS soil survey and interpretation of other wetland areas within the Willapa Basin.

Progress: Complete
Update Frequency: As Needed

Theme Keywords: None, wetlands, based, soil, characteristics
Place Keywords: United States, Washington State, Olympic Peninsula, Nemah Watershed

Access Constraints: None
Usage Constraints: None