LOCATION NONAMECREEK WA
Tentative Series
IRD. MGR/AJF/MPR
01/2025
NONAMECREEK SERIES
Landscape--mountains
Landform--colluvial aprons and glacial valley walls
Slope--0 to 100 percent
Parent material--colluvium from metasedimentary rock
Mean annual precipitation--about 3500 mm
Mean annual air temperature--about 2 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--typic
TAXONOMIC CLASS: Loamy-skeletal, isotic Andic Haplocryods
TYPICAL PEDON: Nonamecreek loam on a south facing, forested glacial valley wall with a slope of 95 percent and an elevation of 1350 m. (The soil was moist throughout when described.)
Oi--0 to 4 cm; slightly decomposed plant material; abrupt wavy boundary
Oe--4 to 7 cm; moderately decomposed plant material; abrupt wavy boundary
E--7 to 17 cm; light gray (10YR 7/2) dry, brown (10YR 5/3) loam; weak very fine subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; weakly smeary; many very fine and common fine and few medium roots; common fine irregular and tubular pores; 5 percent gravel; extremely acid (pH 3.9); abrupt smooth boundary
Bs--17 to 41 cm; brown (7.5YR 5/4) dry, brown (7.5YR 4/4) very gravelly loam; weak fine subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; moderately smeary; common vey fine and fine and few medium roots; common medium tubular and few fine irregular pores; 40 percent gravel; extremely acid (pH 4.3); abrupt smooth boundary
Bw1--41 to 63 cm; brownish yellow (10YR 6/6) dry, yellowish brown (10YR 5/6) very gravelly silt loam; weak very fine subangular blocky structure; soft, very friable, moderately sticky, moderately plastic; moderately smeary; few very fine and common fine roots; few fine irregular and common fine interstitial pores; 45 percent gravel; very strongly acid (pH 4.6); clear smooth boundary
Bw2--63 to 150 cm; light yellowish brown (10YR 6/4) dry, yellowish brown (10YR 5/4) very gravelly loam; weak very fine subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; few fine roots; few fine irregular and common fine interstitial pores; 55 percent gravel; very strongly acid (pH 4.7) clear smooth boundary
TYPE LOCATION: Jefferson County, Washington; near Kimta peak on the Skyline ridge trail in Olympic National Park
Latitude--47.6919130
Longitude-- -123.6679320
Datum--WGS84
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--0 to 3 degrees C
Albic horizon thickness--7 to 15 cm
Spodic horizon thickness--20 to 30 cm
Particle-size control section
*Clay content--8 to 18 percent
*Total rock fragment content--35 to 60 percent
*Gravel content--35 to 60 percent
*Cobble content--0 to 20 percent
*Stone content--0 to 15 percent
O horizons
Combined thickness--3 to 10 cm
E horizon
Value--5 to 7 dry or moist
Chroma--1 to 3 dry or moist
Fine-earth texture--silt loam, loam, sandy loam
Clay content--8 to 18 percent
Total rock fragment content--0 to 25 percent
Gravel content--0 to 20 percent
Cobble content--0 to 10 percent
Reaction--3.5 to 4.4
Thickness--7 to 15 cm
Bs horizon
Value--4 or 5 dry or moist
Chroma--4 or 6 dry or moist
Fine-earth texture--silt loam, loam, sandy loam
Clay content--8 to 18 percent
Total rock fragment content--35 to 60 percent
Gravel content--35 to 60 percent
Cobble content--0 to 20 percent
Stone content--0 to 15 percent
Reaction--3.5 to 4.4
Thickness--20 to 30 cm
Bw1 and Bw2 horizons
Value--4 to 6 dry or moist
Chroma--4 or 6 dry or moist
Fine-earth texture--silt loam, loam, sandy loam
Clay content--8 to 18 percent
Total rock fragment content--35 to 60 percent
Gravel content--35 to 60 percent
Cobble content--0 to 20 percent
Stone content--0 to 15 percent
Reaction--4.5 to 5.5
Combined thickness--more than 100 cm
COMPETING SERIES:
Conto,
Nimue,
Playco--have a mantle of tephra with volcanic glass in the fine earth fraction
Springsteen--lithic contact within 50 to 100 cm of the soil surface
Ignarcreek --has a mean annual soil temperature of 4 to 7 degrees C
GEOGRAPHIC SETTING:
Elevation--1300 to 1800 m
Climate--cool, dry summers; cold, wet winters
Mean annual precipitation--3000 to 4000 mm
Mean annual air temperature--0 to 4 degrees C
Frost-free period--30 to 60 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Hungrycreek--no albic or spodic horizons; similar landforms
Lakedilly--aquic conditions within 0 to 25 cm of the mineral soil surface; depressions on similar landforms
Allincreek--lithic contact within 25 to 50 cm of the soil surface; similar landforms
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturation in normal years--none
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--high or very high throughout
USE AND VEGETATION:
Use--wildlife habitat, recreation
Potential natural vegetation--subalpine fir, black huckleberry, Sitka mountain ash, dwarf bramble, Sitka valerian
DISTRIBUTION AND EXTENT: Olympic Mountains, Washington; MLRA 1; moderate extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana
SERIES PROPOSED: Olympic National Park, Jefferson County, Washington 2023; name from No name creek in Olympic National Park
REMARKS:
Diagnostic horizons and other features in this pedon:
*Particle-size control section--zone from 32 to 107 cm
*Ochric epipedon
*Andic subgroup features--zone from 7 to 63 cm; AO extractable Al plus Fe is 1 to 2 percent and Db is 0.9 to 1.0 g/cm3
*Albic horizon--zone from 7 to 17 cm
*Spodic horizon--zone from 17 to 41 cm
*Cambic horizon--zone from 41 to 150 cm
National Cooperative Soil Survey
U.S.A.