IDENTIFIERS

Current Taxon Name (Soil Name): Shivelyflat

OSD

Series Extent

User Site ID: 07CA601932

User Pedon ID: 07CA601932

Vegetation Plot ID: 07CA601932

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - NSSL

Lab Pedon # - 08N0234

NCSS Pedon Lab Data NASIS Record ID - 19673

Print Date: 11/24/2024

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: 40.4368028

Std. Longitude: -123.9734000

Datum: WGS84

Location Description: College of the Redwoods Educational Farm on Shively Flat

Map Unit: 143—Shivelyflat, 0 to 2 percent slopes

State: California

County: CA023—Humboldt

MLRA: 5—Siskiyou-Trinity Area

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

7.5 Minute USGS Quad: 40123-D8—Redcrest, California

PEDON

Describers Name: Jonathan Hooper and Jennifer Berman

Current Taxonomic Class: Fine-silty, mixed, superactive, nonacid, thermic Aquic Udifluvents

Current Taxon Kind: series

Pedon Type: OSD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Pedon #: 932

Correlated Information:

Soil Name - Shivelyflat

PSC - 25 to 100 cm.

Classificaton Date - 3/5/2012

Soil Taxonomic Edition - tenth edition

Moisture Class - udic

Moisture Subclass - typic

Sampled As Information:

Soil Name - Shivelyflat

Classificaton Date - 10/30/2007

Dynamic Soil Properties:

Erosion Class - 0

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: alluvium derived from mixed

Landscape: mountains, river valley

Landform: flood-plain step

Geomorphic Component Mountains: mountaintop

Geomorphic Component Terraces: tread

Hill Slope Profile: backslope

Slope Complexity: simple

Slope Shape Across: concave

Slope Shape Down: concave

Runoff: negligible

Drainage Class: somewhat poorly

Flooding: rare flooding for very brief periods begining in dec

Ponding: frequent ponding for very brief periods begining in dec

Geology: Alluvial Deposits formation of the Quaternary And Tertiary Overlap Deposits group.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 10/30/2007 (actual site observation date)

Air Photo ID: 6246-143

Surface Water Kind: none observed

Surface Cover Properties:

Site Obs. Cover Kind 1 - crop cover

Site Obs. Cover Kind 2 - row crop

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
2FA 2FP 2GA 2GP	— — — —	Forb, annual Forb, perennial Grass, annual Grass, perennial	— — — —	— — — —	— — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon	0—18	—18—

Site Soil Temperature
Site Obs. Date	Depth	Sensor Kind	Temperature
	cm		C
10/30/2007	50	—	15

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
0	—	—	36	—		1400	—	325	15	—	—	13	—	—	—	—	—	—	—

Ap1—0 to 20 centimeters (0.0 to 7.9 inches); dark olive brown (2.5Y 3/3) crushed, grayish brown (2.5Y 5/2) crushed, dry; silt loam; 20 percent clay; weak very coarse subangular blocky parts to moderate fine granular structure; moderately hard, friable, slightly sticky, slightly plastic; 1.0 very fine roots throughout and 1.0 medium roots throughout and 0.5 fine roots throughout; 0.5 very fine tubular and 0.5 fine tubular pores; fragments; noneffervescent; moderately acid, pH 6.0, chlorophenol red; clear smooth boundary.; moist when described; observed in pit, small. .5% 1-3 mm charcoal and brick fragments throughout

Ap2—20 to 43 centimeters (7.9 to 16.9 inches); olive brown (2.5Y 4/3) crushed, light brownish gray (2.5Y 6/2) crushed, dry; silt loam; 24 percent clay; weak medium subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; 2.0 very fine roots throughout and 0.5 fine roots throughout; 0.5 very fine tubular and 0.5 fine tubular pores; fragments; noneffervescent; moderately acid, pH 6.0, chlorophenol red; clear smooth boundary.; moist when described; observed in pit, small. .5% 1-3 mm charcoal and brick fragments throughout

Ap3—43 to 78 centimeters (16.9 to 30.7 inches); very dark grayish brown (2.5Y 3/2) crushed, light brownish gray (2.5Y 6/2) crushed, dry; silt loam; 24 percent clay; weak medium subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; 2.0 very fine roots throughout; 5.0 very fine tubular and 2.0 medium tubular and 1.0 fine tubular pores; 5 percent medium distinct irregular gray (10YR 5/1), moist, iron depletions in matrix and 15 percent medium prominent irregular dark yellowish brown (10YR 4/6), moist, iron-manganese masses in matrix; fragments; noneffervescent; slightly acid, pH 6.2, chlorophenol red; clear smooth boundary.; moist when described; observed in pit, small. .5% 1-3 mm charcoal and brick fragments throughout

C1—78 to 102 centimeters (30.7 to 40.2 inches); 80 percent dark grayish brown (2.5Y 4/2) broken face and 20 percent dark olive brown (2.5Y 3/3) broken face, 80 percent light brownish gray (2.5Y 6/2) broken face and 20 percent light brownish gray (2.5Y 6/2) broken face, dry; silt loam; 23 percent clay; structureless massive; moderately hard, very friable, slightly sticky, slightly plastic; 1.0 fine roots throughout; 10.0 very fine tubular and 1.0 medium tubular and 1.0 fine tubular pores; 5 percent medium distinct irregular gray (10YR 5/1), moist, iron depletions in matrix and 10 percent medium prominent irregular dark yellowish brown (10YR 4/6), moist, iron-manganese masses in matrix; fragments; noneffervescent; slightly acid, pH 6.2, chlorophenol red; clear smooth boundary.; moist when described; observed in pit, small

C2—102 to 138 centimeters (40.2 to 54.3 inches); olive brown (2.5Y 4/3) broken face, light olive brown (2.5Y 5/3) broken face, dry; silt loam; 26 percent clay; structureless massive; moderately hard, friable, slightly sticky, slightly plastic; 1.0 fine roots throughout; 5.0 very fine tubular and 3.0 medium tubular and 1.0 fine tubular and 1.0 coarse tubular pores; 5 percent medium distinct irregular gray (10YR 5/1), moist, iron depletions in matrix and 10 percent medium prominent irregular dark yellowish brown (10YR 4/6), moist, iron-manganese masses in matrix; fragments; noneffervescent; slightly acid, pH 6.2, chlorophenol red; clear smooth boundary.; moist when described; observed in pit, small

C3—138 to 185 centimeters (54.3 to 72.8 inches); olive brown (2.5Y 4/3) broken face, grayish brown (2.5Y 5/2) broken face, dry; silt loam; 23 percent clay; structureless massive; moderately hard, friable, slightly sticky, slightly plastic; 1.0 fine roots throughout; 5.0 very fine tubular and 1.0 medium tubular and 1.0 fine tubular pores; 5 percent medium distinct irregular gray (10YR 5/1), moist, iron depletions in matrix and 15 percent medium prominent irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron in matrix; fragments; noneffervescent; slightly acid, pH 6.2, chlorophenol red; clear smooth boundary.; moist when described; observed in pit, small

C4—185 to 200 centimeters (72.8 to 78.7 inches); olive brown (2.5Y 4/3) broken face, grayish brown (2.5Y 5/2) broken face, dry; stratified stratified silt loam; 21 percent clay; structureless massive; moderately hard, very friable, slightly sticky, slightly plastic; 0.5 fine roots throughout; 5.0 very fine tubular and 1.0 fine tubular pores; 15 percent medium faint irregular gray (10YR 5/1), moist, iron depletions in matrix and 15 percent medium prominent platy yellowish brown (10YR 5/6), moist, masses of oxidized iron in matrix; fragments; noneffervescent; slightly acid, pH 6.2, chlorophenol red.; wet, satiated when described; observed in pit, small