LOCATION MUSCOTT WA
Tentative Series
IRD. AJF/MGR/MPR
01/2025
MUSCOTT SERIES
Landscape--river valleys
Landform--alluvial terraces
Slope--0 to 15 percent
Parent material--alluvium
Mean annual precipitation--about 2500 mm
Mean annual air temperature-- about 12 degrees C
Depth class--very deep
Drainage class--somewhat excessively well drained
Soil moisture regime--udic
Soil temperature regime--isomesic
Soil moisture subclass--typic
TAXONOMIC CLASS: Sandy-skeletal, mixed, isomesic Typic Udifluvents
TYPICAL PEDON: Muscott extremely gravelly sandy loam on a forested alluvial terrace with a slope of 1 percent and an elevation of 190 m. (The soil was moist throughout when described.)
Oi--0 to 2 cm; slightly decomposed plant material; abrupt wavy boundary
A--2 to 11 cm; dark grayish brown (10YR 4/2) dry, very dark grayish brown (10YR 3/2); extremely gravelly sandy loam; weak fine granular structure; soft, very friable, non-sticky, non-plastic; many very fine roots; common very fine and fine interstitial pores and few very fine irregular pores; 65 percent gravel, very strongly acid (pH 4.9); abrupt smooth boundary
BC--11 to 32 cm; gray (10YR 5/1) dry, very dark gray (10YR 3/1); extremely gravelly loamy sand; single grain structure; loose, non-sticky, non-plastic; many very fine and few fine and medium roots; common very fine and fine interstitial pores and few very fine irregular pores; 70 percent gravel, very strongly acid (pH 5.1); abrupt wavy boundary
C--32 to 150 cm; gray (10YR 5/1) dry, very dark gray (10YR 3/1); extremely gravelly loamy sand; single grain structure; loose, non-sticky, non-plastic; few very fine and fine roots; many very fine and fine and common medium interstitial pores and few very fine irregular pores; 40 percent gravel, 30 percent cobbles, 10 percent stones; very strongly acid (pH 5.3)
TYPE LOCATION: Olympic National Park, Clallam County, Washington; Bogachiel River Trail, opposite of river from Flapjack Camp.
Latitude--48.882715
Longitude-- -124.090555
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--1 to 7 percent
*Total rock fragment content--60 to 85 percent
*Gravel content--35 to 60 percent
*Cobble content--15 to 35 percent
*Stone content--0 to 15 percent
Oi horizon
Horizon thickness--2 to 10 cm
A horizon
Value--2 to 4 moist or dry
Chroma--1 or 2 moist or dry
Fine-earth texture--sandy loam
Clay content--3 to 8 percent
Gravel content--40 to 70 percent
Reaction--4.5 to 5.5
Thickness--8 to 15 cm
BC horizon
Value--3 to 5 moist or dry
Chroma--1 or 2 moist or dry
Fine-earth texture--sandy loam or loamy sand
Clay content--1 to 8 percent
Total rock fragment content--50 to 85 percent
Gravel content--50 to 75 percent
Cobble content--0 to 10 percent
Reaction--4.5 to 5.5
Thickness--20 to 40 cm
C horizon
Value--3 to 5 moist or dry
Chroma--1 or 2 moist or dry
Fine-earth texture--loamy sand or sand
Clay content--1 to 8 percent
Total rock fragment content--60 to 85 percent
Gravel content--35 to 50 percent
Cobble content--15 to 35 percent
Stone content--0 to 15 percent
Reaction--4.5 to 5.5
Thickness--90 to 120 cm
COMPETING SERIES: None
GEOGRAPHIC SETTING:
Elevation--50 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:
Hatana--has cambic horizon; occurs on similar landforms with less frequent flooding interval
Cragcreek--has umbric epipedon and cambic diagnostic horizon; occurs on similar landforms with less frequent flooding
Rica--has aquic conditions within 50 cm of the soil surface; occurs on depressions on similar landforms
Mountmeany--has umbric epipedon and coarse loamy particle size class; occurs on similar landforms with less frequent flooding
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--somewhat excessively well drained
Saturation in normal years--none
Flooding--frequent or occasional; brief
Ponding--none
Saturated hydraulic conductivity (Ksat)--very high throughout
USE AND VEGETATION:
Use--wildlife habitat and recreation
Potential natural vegetation--Sitka spruce, Sitka willow, red alder, dwarf fireweed, common sheep sorrel, trailing blackberry
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 Muscott Creek in Olympic National Park
REMARKS:
Diagnostic horizons and other features in this pedon
*Particle-size control section--zone from 27 to 102 cm
*Ochric epipedon
National Cooperative Soil Survey
U.S.A.