LOCATION SAGHALIE WA
Tentative Series
IRD. AJF/MGR/MPR
01/2025
SAGHALIE SERIES
Landscape--river valleys
Landform--colluvial aprons
Slope--15 to 60 percent
Parent material--colluvium
Mean annual precipitation--about 2500 mm
Mean annual air temperature-- about 12 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--isomesic
Soil moisture subclass--typic
TAXONOMIC CLASS: Loamy-skeletal, isotic, isomesic Andic Dystrudepts
TYPICAL PEDON: Saghalie silt loam on a forested colluvial apron with a slope of 40 percent and an elevation of 225 m. (The soil was moist throughout when described.)
Oi--0 to 6 cm; slightly decomposed plant material; clear smooth boundary
Oe--6 to 8 cm; moderately decomposed plant material; clear smooth boundary
A--8 to 15; brown (7.5YR 4/3) dry, dark brown (7.5YR 3/3); gravelly sandy loam; weak fine granular structure; soft, very friable, non-sticky, non-plastic; weakly smeary; many very fine and fine, and common medium, and few coarse roots; common very fine and fine irregular, and few fine tubular pores; 25 percent gravel; very strongly acid (pH 4.9); clear wavy boundary
Bw1--15 to 40 cm; brown (7.5YR 4/4) dry, dark brown (7.5YR 3/4); very gravelly sandy loam; weak fine subangular blocky structure; slightly hard, friable, non-sticky, non-plastic; weakly smeary; common very fine and fine, and few medium roots; common fine irregular and few fine tubular pores; 35 percent gravel, 5 percent cobbles; very strongly acid (pH 5.0); abrupt wavy boundary
Bw2--40 to 58 cm light olive brown (2.5Y 5/4) dry, olive brown (2.5Y 4/4); very gravelly sandy loam; weak fine subangular blocky structure; slightly hard, friable, non-sticky, non-plastic; weakly smeary; common very fine, and few fine and medium roots; common fine irregular and interstitial pores; 30 percent gravel, 10 percent cobbles, 5 percent stones; very strongly acid (pH 5.1); clear wavy boundary
Bw3--58 to 86 cm; reddish brown (2.5YR 5/3) dry, olive brown (2.5Y 4/3); very gravelly sandy loam; weak fine subangular blocky structure; soft, very friable, non-sticky, non-plastic; few fine and medium roots; common fine irregular and interstitial pores; 30 percent gravel, 15 percent cobbles, 10 percent stones; very strongly acid (pH 5.2); abrupt wavy boundary
BC--86 to 150 cm; brown (10YR 4/3) dry, dark brown (10YR 3/3); very gravelly coarse sandy loam; weak fine subangular blocky structure; loose, loose, non-sticky, non-plastic; few fine and medium roots; common fine and medium interstitial pores; 45 percent gravel, 10 percent cobbles; very strongly acid (pH 5.3)
TYPE LOCATION: Olympic National Park, Jefferson County, Washington; South Fork Hoh River Trail, approximately 1 mile from trailhead.
Latitude--47.789163
Longitude-- -123.934587
Datum--WGS84
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--10 to 15 degrees C
Mean summer soil temperature--12 to 17 degrees C
Particle-size control section
*Clay content--5 to 15 percent
*Total rock fragment content--35 to 60 percent
*Gravel content--35 to 60 percent
*Cobble content--0 to 15 percent
O horizons
Horizon designation-- Oi and Oe
Combined thickness--6 to 12 cm
A horizon
Hue--10YR or 7.5YR
Value--2 to 4 moist or dry
Chroma--1 to 3 moist or dry
Fine-earth texture--sandy loam, loam
Clay content--5 to 15 percent
Gravel content--15 to 35 percent
Reaction--4.5 to 5.5
Thickness--5 to 15 cm
Bw horizons horizon
Hue--7.5YR, 10YR, 2.5Y
Value--2 to 4 moist, 3 to 5 dry
Chroma--2 to 4 moist or dry
Fine-earth texture--sandy loam, loam
Clay content--5 to 15 percent
Total rock fragment content--35 to 60 percent
Gravel content--25 to 50 percent
Cobble content--0 to 15 percent
Stone content-0 to 10 percent
Reaction--4.5 to 5.5
Combined thickness--60 to 80 cm
BC horizon
Horizon designation--BC, C
Hue--10YR or 2.5Y
Value--3 to 5 moist or dry
Chroma--2 to 4 moist or dry
Fine-earth texture--sandy loam, coarse sandy loam, loamy sand
Clay content--3 to 10 percent
Total rock fragment content--35 to 60 percent
Gravel content--35 to 60 percent
Cobble content--0 to 15 percent
Reaction--4.5 to 5.5
Combined thickness--45 to 80 cm
COMPETING SERIES: None
GEOGRAPHIC SETTING:
Elevation--100 to 300 m
Climate--warm, moist summers; mild, wet winters
Mean annual precipitation--2000 to 3000 mm
Mean annual air temperature--10 to 14 degrees C
Frost-free period--180 to 240 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Marymere--does not have andic properties; occurs on alluvial terraces adjacent to similar landforms
Mountmeany--has umbric epipedon and coarse loamy particle size class; occurs on alluvial terraces adjacent to similar landforms
Jolleycreek--has albic and spodic horizons; occurs on similar landforms
Rica--has aquic conditions within 50 cm of the mineral soil surface; occurs on depressions on 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 and recreation
Potential natural vegetation--Sitka spruce, western hemlock, Douglas-fir, red huckleberry, oval-leaf huckleberry, western swordfern, salal, Oregon oxalis, western cordilleran bunchberry
DISTRIBUTION AND EXTENT: Olympic Mountains and Coast, Washington; MLRA's 1 and 4a; moderate extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana
SERIES PROPOSED: Olympic National Park, Clallam County, Washington 2023; name from Saghalie Creek in Olympic National Park
REMARKS:
Diagnostic horizons and other features in this pedon
*Particle-size control section--zone from 33 to 108 cm
*Ochric epipedon
*Andic subgroup properties--zone from 8 to 58 cm; AO extractable Al + FE is 1 to 2 percent and Db is 0.9 to 1.0
*Cambic horizon--zone from 15 to 86 cm
National Cooperative Soil Survey
U.S.A.