IDENTIFIERS

Current Taxon Name (Soil Name): Redwoodhouse

OSD

Series Extent

User Site ID: 03CA601131

User Pedon ID: 03CA601131

Vegetation Plot ID: 03CA601131

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - NSSL

Lab Pedon # - 06N0221

NCSS Pedon Lab Data NASIS Record ID - 18542

Print Date: 4/29/2025

LOCATION

Location In Web Soil Survey

AOI is roughly a square mile and pedon is marked in the center.

Location in SoilWeb

Location in Google Maps

Std. Latitude: 40.3163889

Std. Longitude: -123.8319444

Datum: WGS84

Township: 2S

Range: 3E

Section: 3

Location Description: Humboldt County, California; Located approximately 4 kilometers east of the town of Redcrest, south of Larabee Creek, on Pacific Lumber Road E18 to E18.8 to unnumbered spur road to the north.

Map Unit: 512—Redwoodhouse-Yagercreek-Mailridge complex, 15 to 30 percent slopes

State: California

County: CA023—Humboldt

MLRA: 4—California Coastal Redwood Belt

Non-MLRA Soil Survey Area: CA601—Humboldt County, South Part, California

7.5 Minute USGS Quad: 40123-C7—Myers Flat, California

PEDON

Describers Name: Jennifer Berman

Current Taxonomic Class: Fine-loamy, mixed, superactive, isomesic Typic Hapludalfs

Current Taxon Kind: series

Pedon Type: OSD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Pedon #: 131

Correlated Information:

Soil Name - Redwoodhouse

PSC - 30 to 80 cm.

Classificaton Date - 3/25/2013

Soil Taxonomic Edition - eleventh edition

Moisture Class - udic

Moisture Subclass - udic

Sampled As Information:

Soil Name - Redwoodhouse

Classificaton Date - 9/21/2005

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: colluvium derived from sandstone and siltstone and/or residuum weathered from sandstone and siltstone

Landscape: mountains

Landform: mountain slope

Geomorphic Component Mountains: mountainflank, lower third

Hill Slope Profile: backslope

Slope Complexity: complex

Slope Shape Across: convex

Slope Shape Down: linear

Runoff: high

Drainage Class: well

Flooding: none flooding

Ponding: none ponding

Bedrock: moderately coherent mudstone

Geology: Yager Terrane group .

Surface Fragments: 0.00 percent nonflat subangular weakly coherent cemented 2- to 75-millimeter siltstone, unspecified,

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 9/21/2005 (actual site observation date)

Air Photo ID: 6248-33

Surface Water Kind: none observed

Plant Association Name: Redwood-Douglas fir Forest

Surface Cover Properties:

Site Obs. Cover Kind 1 - tree cover

Site Obs. Cover Kind 2 - intermixed conifers and hardwoods

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
ARCTO3 LIDE3 POMU SESE3 VAOV2	Arctostaphylos Lithocarpus densiflorus Polystichum munitum Sequoia sempervirens Vaccinium ovatum	manzanita tanoak western swordfern redwood California huckleberry	— — — — —	— — — — —	— — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon	0—18 30—200	—18— —170—

Setting and Climate
Slope	Slope Length USLE	Upslope Length	Elev.	Corr. Elev	Aspect	MAP	REAP	FFD	MAAT	MSAT	MWAT	MAST	MSST	MWST	MFFP	PE Index	Climate Station ID	Climate Station Name	Climate Station Type
%	m				degrees	mm	mm		C						mm
15	—	—	244	—	60	1520	—	285	11	—	—	—	—	—	—	—	—	—	—

Oi—0 to 1 centimeters (0.0 to 0.4 inches); black (10YR 2/1) rubbed, very dark grayish brown (10YR 3/2), dry; slightly decomposed plant material; low excavation difficulty; 5 percent by volume nonflat rounded indurated 2-20-75 millimeter sandstone, unspecified fragments; moderately acid, pH 6.0, chlorophenol red; abrupt smooth boundary.; moist when described; observed in cut

A—1 to 18 centimeters (0.4 to 7.1 inches); dark brown (10YR 3/3) broken face, pale brown (10YR 6/3) broken face, dry; gravelly silt loam; 23 percent clay; strong very fine granular structure; slightly hard, very friable, slightly sticky, slightly plastic; moderate permeability; low excavation difficulty; 20.0 very fine roots throughout and 1.0 medium roots throughout and 5.0 fine roots throughout; 5.0 very fine tubular pores; 20 percent by volume nonflat subangular strongly coherent cemented 2-20-75 millimeter sandstone, unspecified fragments and 25 percent by volume nonflat subangular moderately coherent cemented 2-20-75 millimeter mudstone fragments; strongly acid, pH 5.3, bromcresol green; clear smooth boundary.; moist when described; observed in cut

ABt—18 to 30 centimeters (7.1 to 11.8 inches); dark brown (10YR 3/3) broken face, pale brown (10YR 6/3) broken face, dry; gravelly loam; 26 percent clay; strong fine subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; moderate permeability; low excavation difficulty; 5.0 very fine roots throughout and 2.0 medium roots throughout and 5.0 fine roots throughout and 1.0 coarse roots throughout; 5.0 very fine tubular and 1.0 fine tubular pores; 25 percent by volume nonflat subangular moderately coherent cemented 2-20-75 millimeter mudstone fragments and 25 percent by volume nonflat subangular strongly coherent cemented 2-20-75 millimeter mudstone fragments; strongly acid, pH 5.3, chlorophenol red; clear smooth boundary.; moist when described; observed in cut

Bt1—30 to 50 centimeters (11.8 to 19.7 inches); yellowish brown (10YR 5/4) broken face, very pale brown (10YR 7/3) broken face, dry; gravelly loam; 26 percent clay; strong fine subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; moderate permeability; moderate excavation difficulty; 1.0 very fine roots throughout and 1.0 medium roots throughout and 1.0 fine roots throughout; 5.0 very fine tubular and 1.0 fine tubular pores; 10 percent prominent clay films on all faces of peds; 25 percent by volume nonflat subangular moderately coherent cemented 2-25-75 millimeter mudstone fragments and 25 percent by volume nonflat subangular strongly coherent cemented 2-20-75 millimeter mudstone fragments; strongly acid, pH 5.5, chlorophenol red; clear smooth boundary.; moist when described; observed in cut

Bt2—50 to 90 centimeters (19.7 to 35.4 inches); dark yellowish brown (10YR 4/4) broken face, very pale brown (10YR 7/3) broken face, dry; gravelly clay loam; 29 percent clay; strong very fine subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; moderate permeability; moderate excavation difficulty; 3.0 very fine roots throughout and 1.0 very coarse roots throughout and 2.0 medium roots throughout and 3.0 fine roots throughout; 5.0 very fine tubular and 1.0 fine tubular pores; 20 percent prominent clay films on all faces of peds; 20 percent by volume nonflat subangular moderately coherent cemented 2-25-75 millimeter mudstone fragments and 25 percent by volume nonflat subangular strongly coherent cemented 2-20-75 millimeter mudstone fragments; strongly acid, pH 5.3, chlorophenol red; gradual smooth boundary.; moist when described; observed in cut

Bt3—90 to 115 centimeters (35.4 to 45.3 inches); dark yellowish brown (10YR 4/4) broken face, light yellowish brown (10YR 6/4) broken face, dry; paragravelly clay loam; 33 percent clay; 10 percent yellowish brown (10YR 5/6) coarse prominent irregular mottles; strong fine subangular blocky structure; very hard, friable, moderately sticky, moderately plastic; moderate permeability; moderate excavation difficulty; 0.5 very fine roots throughout and 1.0 very coarse roots throughout and 5.0 medium roots throughout and 0.5 fine roots throughout and 3.0 coarse roots throughout; 0.5 very fine tubular and 0.5 fine tubular pores; 50 percent distinct clay films on all faces of peds; 7 percent by volume nonflat subangular moderately coherent cemented 2-25-75 millimeter mudstone fragments and 28 percent by volume nonflat subangular strongly coherent cemented 2-20-75 millimeter mudstone fragments; strongly acid, pH 5.4, bromcresol green; gradual smooth boundary.; moist when described; observed in cut

Bt4—115 to 160 centimeters (45.3 to 63.0 inches); dark yellowish brown (10YR 4/4) broken face, light yellowish brown (10YR 6/4) broken face, dry; paragravelly clay loam; 33 percent clay; 10 percent yellowish brown (10YR 5/6) coarse prominent irregular mottles; strong fine subangular blocky structure; very hard, friable, moderately sticky, moderately plastic; moderate permeability; moderate excavation difficulty; 0.5 very fine roots throughout and 1.0 very coarse roots throughout and 5.0 medium roots throughout and 1.0 fine roots throughout and 1.0 coarse roots throughout; 0.5 very fine tubular and 0.5 fine tubular pores; 20 percent distinct clay films on all faces of peds; 7 percent by volume nonflat subangular strongly coherent cemented 2-20-75 millimeter mudstone fragments and 28 percent by volume nonflat subangular moderately coherent cemented 2-25-75 millimeter mudstone fragments; strongly acid, pH 5.2, chlorophenol red; gradual smooth boundary.; moist when described; observed in cut

Bt5—160 to 200 centimeters (63.0 to 78.7 inches); dark yellowish brown (10YR 4/4) broken face, light yellowish brown (10YR 6/4) broken face, dry; paragravelly clay loam; 28 percent clay; 10 percent yellowish brown (10YR 5/6) coarse prominent irregular mottles; moderate medium subangular blocky, and moderate fine subangular blocky structure; very hard, friable, moderately sticky, moderately plastic; moderate permeability; moderate excavation difficulty; 0.5 very fine roots throughout and 1.0 very coarse roots throughout and 1.0 medium roots throughout and 0.5 fine roots throughout and 1.0 coarse roots throughout; 0.5 very fine tubular and 0.5 fine tubular pores; 15 percent distinct clay films on all faces of peds and 20 percent distinct clay films on rock fragments; 14 percent by volume nonflat subangular strongly coherent cemented 2-20-75 millimeter mudstone fragments and 26 percent by volume nonflat subangular moderately coherent cemented 2-25-75 millimeter mudstone fragments; strongly acid, pH 5.1, bromcresol green.; moist when described; observed in cut