IDENTIFIERS

Current Taxon Name (Soil Name): Cottoneva

OSD

Series Extent

User Site ID: 08CA600179

User Pedon ID: 08CA600179

Vegetation Plot ID: 08CA600179

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - NSSL

Lab Pedon # - 09N0170

NCSS Pedon Lab Data NASIS Record ID - 20312

Print Date: 11/23/2024

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: 40.4422806

Std. Longitude: -123.9884778

Datum: WGS84

Location Description: Newton B. Drury Grove, west of Avenue of the Giants, Pepperwood.

Map Unit: 179—Eelriver and Cottoneva soils, 0 to 2 percent slopes

State: California

County: CA023—Humboldt

MLRA: 4B—Coastal Redwood Belt

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

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

PEDON

Describers Name: Jennifer T. Berman

Current Taxonomic Class: Coarse-loamy, mixed, superactive, nonacid, isomesic Oxyaquic Udifluvents

Current Taxon Kind: series

Pedon Type: classifies to current taxon name, full description

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Pedon #: 179

Correlated Information:

Soil Name - Cottoneva

PSC - 25 to 100 cm.

Classificaton Date - 3/26/2013

Classifier - Jonathan Hooper

Soil Taxonomic Edition - eleventh edition

Moisture Class - udic

Moisture Subclass - oxyaquic

Sampled As Information:

Soil Name - Cottoneva

Classificaton Date - 11/13/2008

Dynamic Soil Properties:

Erosion Class - 0

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: alluvium derived from sedimentary rock

Landscape: river valley

Landform: flood-plain step

Geomorphic Component Terraces: tread

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Runoff: low

Drainage Class: moderately well

Flooding: rare flooding for very brief periods begining in dec

Ponding: frequent ponding for very brief periods begining in dec

Geology: Quaternary Alluvium member.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 11/13/2008 (actual site observation date)

Air Photo ID: 6261-21

Plant Association Name: redwood 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
ACMA3 OXOR PTAQ RUPA SESE3 UMCA	Acer macrophyllum Oxalis oregana Pteridium aquilinum Rubus parviflorus Sequoia sempervirens Umbellularia californica	bigleaf maple redwood-sorrel western brackenfern thimbleberry redwood California laurel	— — — — — —	— — — — — —	— — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon	0—15	—15—

Site Soil Temperature
Site Obs. Date	Depth	Sensor Kind	Temperature
	cm		C
11/13/2008	50	—	10

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
1	—	—	30	—	90	1500	—	345	13	—	—	11	—	—	—	—	—	—	—

Oi—0 to 4 centimeters (0.0 to 1.6 inches); very dark brown (7.5YR 2.5/2) rubbed, brown (7.5YR 4/3), dry; slightly decomposed plant material; loose, loose, nonsticky, nonplastic; 5.0 very fine roots and 1.0 fine roots; 10.0 very fine interstitial and 10.0 medium interstitial and 10.0 fine interstitial pores; fragments; noneffervescent; moderately acid, pH 5.6; abrupt smooth boundary.; very moist when described; observed in pit, small

A—4 to 15 centimeters (1.6 to 5.9 inches); very dark grayish brown (10YR 3/2) broken face, grayish brown (10YR 5/2) broken face, dry; very fine sandy loam; 14 percent clay; moderate fine granular, and moderate medium granular structure; soft, very friable, slightly sticky, nonplastic; 1.0 very fine roots throughout and 5.0 medium roots throughout and 1.0 fine roots throughout; 1.0 very fine tubular and 1.0 fine tubular pores; fragments; noneffervescent; slightly acid, pH 6.2, chlorophenol red; clear smooth boundary.; very moist when described; observed in pit, small

C1—15 to 35 centimeters (5.9 to 13.8 inches); dark grayish brown (2.5Y 4/2) broken face, light brownish gray (2.5Y 6/2) broken face, dry; fine sandy loam; 12 percent clay; structureless massive; soft, very friable, slightly sticky, nonplastic; 0.5 very fine roots throughout and 3.0 medium roots throughout and 0.5 fine roots throughout; 0.5 very fine tubular and 0.5 fine tubular pores; fragments; noneffervescent; slightly acid, pH 6.2, chlorophenol red; gradual smooth boundary.; very moist when described; observed in pit, small

C2—35 to 55 centimeters (13.8 to 21.7 inches); dark grayish brown (2.5Y 4/2) broken face, light brownish gray (2.5Y 6/2) broken face, dry; fine sandy loam; 14 percent clay; structureless massive; soft, very friable, slightly sticky, nonplastic; 0.5 very fine roots throughout and 3.0 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; fragments; noneffervescent; moderately acid, pH 6.0, chlorophenol red; clear smooth boundary.; very moist when described; observed in pit, small

C3—55 to 75 centimeters (21.7 to 29.5 inches); dark grayish brown (2.5Y 4/2) broken face, light brownish gray (2.5Y 6/2) broken face, dry; very fine sandy loam; 16 percent clay; structureless massive; soft, very friable, slightly sticky, nonplastic; 0.5 very fine 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 3.0 medium tubular and 0.5 fine tubular pores; 10 percent fine distinct dark gray (2.5Y 4/1), moist, iron depletions in matrix and 15 percent fine distinct dark yellowish brown (10YR 4/6), moist, iron-manganese masses in matrix; fragments; noneffervescent; moderately acid, pH 6.0, chlorophenol red; clear smooth boundary.; very moist when described; observed in pit, small

2Ab—75 to 110 centimeters (29.5 to 43.3 inches); dark grayish brown (2.5Y 4/2) broken face, light brownish gray (2.5Y 6/2) broken face, dry; silt loam; 22 percent clay; weak medium subangular blocky, and weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 1.0 very fine roots throughout and 5.0 medium roots throughout and 0.5 fine roots throughout and 2.0 coarse roots throughout; 1.0 very fine tubular and 1.0 medium tubular and 1.0 fine tubular pores; 15 percent fine distinct dark yellowish brown (10YR 4/6), moist, iron-manganese masses in matrix and 15 percent fine distinct dark gray (2.5Y 4/1), moist, iron depletions in matrix; fragments; noneffervescent; moderately acid, pH 6.0, chlorophenol red; gradual smooth boundary.; very moist when described; observed in pit, small

2C—110 to 160 centimeters (43.3 to 63.0 inches); dark grayish brown (2.5Y 4/2) broken face, light brownish gray (2.5Y 6/2) broken face, dry; fine sandy loam; 10 percent clay; structureless massive; soft, very friable, slightly sticky, nonplastic; 0.5 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.; very moist when described; observed in pit, small