LOCATION DODGERPOINT             WA

Tentative Series
IRD. MGR/AJF/MPR
01/2025

DODGERPOINT SERIES

Landscape--mountains
Landform--glacial valley walls
Slope--35 to 100 percent
Parent material--residuum from metasedimentary rock
Mean annual precipitation--about 1200 mm
Mean annual air temperature--about 10 degrees C
Depth class--shallow
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--mesic
Soil moisture subclass--typic

TAXONOMIC CLASS: Loamy-skeletal, isotic, mesic Lithic Dystrudepts

TYPICAL PEDON: Dodgerpoint extremely gravelly loam on an east-facing, forested glacial valley wall with a slope of 60 percent and an elevation of 490 m. (The soil was moist throughout when described.)

Oi--0 to 4 cm; slightly decomposed plant material; abrupt wavy boundary

A--4 to 17 cm; dark brown (10YR 3/3) dry, very dark grayish brown (10YR 3/2) extremely gravelly loam; weak fine subangular blocky structure; soft, very friable; common very fine and fine and few medium roots; 45 percent gravel and 20 percent cobbles; very strongly acid (pH 4.6); abrupt wavy boundary

Bw--17 to 35 cm; yellowish brown (10YR 5/4) dry, brown (10YR 4/3) extremely gravelly sandy loam; weak fine subangular blocky structure; soft, very friable; common very fine, fine, medium, and coarse and few very coarse roots; 40 percent gravel and 25 percent cobbles; very strongly acid (pH 4.7); abrupt irregular boundary

R--35 cm; unweathered sandstone

TYPE LOCATION: Elwha river valley about 91 m above Olympic Hotsprings Road in Olympic National park, Clallam County, Washington.
Latitude--47.9830391
Longitude-- -123.6144880
Datum--WGS84

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--8 to 13 degrees C
Depth to restrictive layer--25 to 50 cm

Particle-size control section
*Clay content--7 to 17 percent
*Total rock fragment content--45 to 75 percent
*Gravel content--15 to 50 percent
*Cobble content--0 to 40 percent
*Stone content--0 to 20 percent

O horizon
Thickness--0 to 8 cm

A horizon
Value-- 2 or 3 moist, 3 or 4 dry
Chroma--2 or 3, moist or dry
Fine-earth texture--silt loam, loam, or sandy loam
Clay content--7 to 17 percent
Total rock fragment content--50 to 75 percent
Gravel content--15 to 50 percent
Cobble content--0 to 40 percent
Stone content--0 to 20 percent
Reaction--4.5 to 5.5
Thickness--10 to 20 cm

Bw horizon
Value--3 to 5 moist, 4 to 6 dry
Chroma--3 or 4 moist or dry
Fine-earth texture--silt loam, loam, or sandy loam
Clay content--7 to 17 percent
Total rock fragment content--50 to 75 percent
Gravel content--15 to 50 percent
Cobble content--0 to 40 percent
Stone content--0 to 20 percent
Reaction--4.5 to 5.5
Thickness--15 to 35 cm

COMPETING SERIES:
Grouslous--particle-size control section contains 27 to 35 percent clay
Zango--particle-size control section contains 18 to 30 percent clay

GEOGRAPHIC SETTING:
Elevation--300 to 1000 m
Climate--warm, dry summers; mild, wet winters
Mean annual precipitation--1000 to 1400 mm
Mean annual air temperature--8 to 12 degrees C
Frost-free period--180 to 240 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Sentinelpeak--no lithic contact within 150 cm; similar landforms
Mountappleton--no lithic contact within 150 cm; oxyaquic conditions; 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-- pacific madrone, Douglas-fir, oceanspray, Cascade barberry, western swordfern, pipsissewa

DISTRIBUTION AND EXTENT: Olympic Mountains, Washington; MLRA 1; small extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana

SERIES PROPOSED: Olympic National Park, Jefferson County, Washington 2023; name from Sentinel Peak in Olympic National Park

REMARKS:
Diagnostic horizons and other features in this pedon:
*Particle-size control section--zone from 4 to 35 cm
*Ochric epipedon
*Cambic horizon thickness--zone from 17 to 35 cm
*Lithic contact--35 cm

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National Cooperative Soil Survey
U.S.A.