IDENTIFIERS

Current Taxon Name (Soil Name): Salmoncreek

OSD

Series Extent

User Site ID: 05CA600016

User Pedon ID: 05CA600016

Vegetation Plot ID: 05CA600016

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - NSSL

Lab Pedon # - 06N0222

NCSS Pedon Lab Data NASIS Record ID - 18543

Print Date: 11/21/2024

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: 40.6661111

Std. Longitude: -124.1663056

Datum: WGS84

Map Unit: 387—Salmoncreek-Rootcreek complex, 2 to 15 percent slopes

State: California

County: CA023—Humboldt

MLRA: 4B—Coastal Redwood Belt

Non-MLRA Soil Survey Area: CA600—Humboldt County, Central Part, California

7.5 Minute USGS Quad: 40124-F2—Fields Landing, California

PEDON

Describers Name: Sue Aszman

Current Taxonomic Class: Fine-silty, mixed, superactive, isomesic Aquic Hapludalfs

Current Taxon Kind: series

Pedon Type: representative pedon for component

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Correlated Information:

Soil Name - Salmoncreek

PSC - 22 to 72 cm.

Classificaton Date - 3/26/2013

Classifier - Jonathan Hooper

Soil Taxonomic Edition - eleventh edition

Moisture Class - udic

Moisture Subclass - udic

Sampled As Information:

Soil Name - Toktowaka

Classificaton Date - 5/4/2005

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: residuum weathered from mudstone and/or residuum weathered from siltstone

Landscape: mountains

Landform: mountain slope

Geomorphic Component Mountains: mountainflank, upper third

Hill Slope Profile: backslope

Slope Complexity: complex

Slope Shape Across: convex

Slope Shape Down: convex

Runoff: very high

Drainage Class: poorly

Flooding: none flooding

Ponding: none ponding

Bedrock: moderately coherent mudstone with <10

Geology: Wildcat Undifferentiated member of the Wildcat Group group.

Surface Fragments: 0.00 percent

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 5/4/2005 (actual site observation date)

Air Photo ID: 6246-82

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 - conifers

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
SESE3 ABGR ALRU2 VAOV2 GASH IRDO RUPA	Sequoia sempervirens Abies grandis Alnus rubra Vaccinium ovatum Gaultheria shallon Iris douglasiana Rubus parviflorus	redwood grand fir red alder California huckleberry salal Douglas iris thimbleberry	— — — — — — —	— — — — — — —	— — — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon aquic conditions	0—22 22—170 22—170	—22— —148— —148—

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
12	—	—	640	—	210	1520	—	285	11	—	—	—	—	—	—	—	—	—	—

Oi—0 to 5 centimeters (0.0 to 2.0 inches); very dark grayish brown (10YR 3/2) rubbed slightly decomposed plant material; rapid permeability; low excavation difficulty; fragments; strongly acid, pH 5.3, pH meter; clear smooth boundary.; moist when described; observed in cut

A—5 to 22 centimeters (2.0 to 8.7 inches); very dark grayish brown (10YR 3/2) broken face, light brownish gray (10YR 6/2) broken face, dry; silt loam; 23 percent clay; moderate medium subangular blocky parts to weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; low excavation difficulty; 7.0 very fine roots throughout and 1.0 medium roots throughout and 3.0 fine roots throughout; 2.0 very fine irregular and 2.0 fine irregular pores; 3 percent by volume nonflat subrounded very weakly coherent cemented 2-5-75 millimeter siltstone, unspecified fragments; strongly acid, pH 5.5, pH meter; clear wavy boundary.; moist when described; observed in cut

Bt1—22 to 56 centimeters (8.7 to 22.0 inches); brown (10YR 4/3) broken face, pale brown (10YR 6/3) broken face, dry; silt loam; 23 percent clay; moderate medium subangular blocky structure; moderately hard, friable, moderately sticky, moderately plastic; slow permeability; moderate excavation difficulty; 2.0 very fine roots throughout and 1.0 medium roots throughout and 1.0 fine roots throughout; 5.0 very fine irregular and 2.0 fine irregular pores; 15 percent faint dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 5 percent fine distinct grayish brown (10YR 5/2), moist, iron depletions in matrix and 15 percent fine distinct yellowish brown (10YR 5/6), moist, iron-manganese masses in matrix; 3 percent by volume nonflat subrounded very weakly coherent cemented 2-5-75 millimeter siltstone, unspecified fragments; strongly acid, pH 5.2, pH meter; gradual smooth boundary.; moist when described; observed in cut

Bt2—56 to 86 centimeters (22.0 to 33.9 inches); brown (10YR 4/3) broken face, pale brown (10YR 6/3) broken face, dry; very paragravelly silty clay loam; 29 percent clay; strong medium subangular blocky structure; moderately hard, friable, very sticky, very plastic; slow permeability; moderate excavation difficulty; 2.0 very fine roots throughout and 1.0 very coarse roots throughout and 1.0 medium roots throughout and 1.0 fine roots throughout; 6.0 very fine irregular and 2.0 fine irregular pores; 35 percent faint dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 25 percent fine distinct grayish brown (10YR 5/2), moist, iron depletions in matrix and 35 percent fine distinct dark yellowish brown (10YR 4/6), moist, iron-manganese masses in matrix; 45 percent by volume nonflat subrounded very weakly coherent cemented 2-5-75 millimeter siltstone, unspecified fragments; very strongly acid, pH 4.9, pH meter; gradual smooth boundary.; moist when described; observed in cut

Btg1—86 to 123 centimeters (33.9 to 48.4 inches); light brownish gray (2.5Y 6/2) broken face, light gray (2.5Y 7/2) broken face, dry; very paragravelly silty clay loam; 36 percent clay; strong medium subangular blocky structure; hard, friable, very sticky, very plastic; slow permeability; moderate excavation difficulty; 5.0 very fine roots throughout and 1.0 medium roots throughout and 2.0 fine roots throughout; 5.0 very fine irregular and 2.0 fine dendritic tubular pores; 25 percent faint brown (10YR 5/3), moist, clay films on all faces of peds; 25 percent medium distinct strong brown (7.5YR 4/6), moist, iron-manganese masses in matrix; 55 percent by volume nonflat subrounded very weakly coherent cemented 2-5-75 millimeter siltstone, unspecified fragments; very strongly acid, pH 4.8, pH meter; gradual smooth boundary.; moist when described; observed in cut

Btg2—123 to 152 centimeters (48.4 to 59.8 inches); light brownish gray (2.5Y 6/2) broken face, light gray (2.5Y 7/2) broken face, dry; very paragravelly silty clay loam; 32 percent clay; strong medium subangular blocky structure; hard, friable, moderately sticky, moderately plastic; slow permeability; moderate excavation difficulty; 2.0 very fine roots throughout and 1.0 fine roots throughout; 3.0 very fine irregular and 2.0 fine irregular pores; 25 percent faint brown (10YR 5/3), moist, clay films on all faces of peds; 25 percent medium distinct strong brown (7.5YR 4/6), moist, iron-manganese masses in matrix; 55 percent by volume nonflat subrounded very weakly coherent cemented 2-5-75 millimeter siltstone, unspecified fragments; very strongly acid, pH 4.9, pH meter; gradual wavy boundary.; moist when described; observed in cut

Btg3—152 to 200 centimeters (59.8 to 78.7 inches); grayish brown (2.5Y 5/2) broken face, light gray (2.5Y 7/2) broken face, dry; very paragravelly silt loam; 26 percent clay; strong medium subangular blocky structure; hard, friable, moderately sticky, moderately plastic; slow permeability; moderate excavation difficulty; 1.0 very fine roots throughout and 5.0 fine roots throughout; 2.0 very fine irregular and 6.0 very fine irregular pores; 35 percent faint brown (10YR 5/3), moist, clay films on all faces of peds; 25 percent medium distinct strong brown (7.5YR 4/6), moist, iron-manganese masses in matrix; 45 percent by volume nonflat subrounded very weakly coherent cemented 2-5-75 millimeter siltstone, unspecified fragments; very strongly acid, pH 5.0, pH meter.; moist when described; observed in cut