IDENTIFIERS

Current Taxon Name (Soil Name): Hetchy

OSD

Series Extent

User Site ID: R09CA630BAH003

User Pedon ID: S2009BAH003

Vegetation Plot ID: R09CA630BAH003

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - SSL

Lab Pedon # - 10N0459

NCSS Pedon Lab Data NASIS Record ID - 24756

Print Date: 2/16/2025

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: 37.7869453

Std. Longitude: -120.2127762

Datum: WGS84

Township: 1 S

Range: 16 E

Section: 4

PLSS Details: about 2297 feet west and 1179 feet north of the southwest corner section

Map Unit: 8177—Moccasinhill-Copperopolis-Sanguinetti complex, 30 to 60 percent slopes

Country: US—United States

State: California

County: CA109—Tuolumne

MLRA: 18—Sierra Nevada Foothills

Regional Office: SW—Southwest

Non-MLRA Soil Survey Area: CA630—Central Sierra Foothills Area, California, Parts of Calaveras and Tuolumne Counties

7.5 Minute USGS Quad: 37120-G2—Groveland, California

PEDON

Describers Name: Bev Harben

Current Taxonomic Class: Loamy-skeletal, mixed, semiactive, thermic Ultic Haploxeralfs

Current Taxon Kind: series

Pedon Type: taxadjunct to the series

Pedon Purpose: laboratory sampling site

Pedon Record Orgin: NASIS

Correlated Information:

Soil Name - Hetchy

PSC - 22 to 72 cm.

Classificaton Date - 12/28/2015

Classifier - Andrew Paolucci

Soil Taxonomic Edition - twelfth edition

Moisture Class - xeric

Moisture Subclass - typic

Sampled As Information:

Soil Name - Moccasinhill

Classificaton Date - 5/12/2009

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: colluvium over residuum weathered from phyllite

Landscape: foothills

Landform: hill

Geomorphic Component Hills: side slope

Hill Slope Profile: backslope

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Drainage Class: well

Flooding: none flooding

Ponding: none ponding

Bedrock: slight weathered phyllite at 90cm

Geology: Sullivan Terranes formation.

Surface Fragments: 1.00 percent flat indurated 151- to 380-millimeter phyllite, 20.00 percent flat indurated 2- to 150-millimeter phyllite,

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 5/12/2009 (actual site observation date)

Plant Association Name: Live Oak Mixed Chapparl

Surface Cover Properties:

Site Obs. Cover Kind 1 - shrub cover

Site Obs. Cover Kind 2 - rangeland, shrubby

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 AVENA BROMU ERIOD HEAR5 LUPIN PIPO QUWI2	Arctostaphylos Avena Bromus Eriodictyon Heteromeles arbutifolia Lupinus Pinus ponderosa Quercus wislizeni	manzanita oat brome yerba santa toyon lupine ponderosa pine interior live oak	— — — — — — — —	— — — — — — — —	— — — — — — — —

Pedon Restrictions
Kind	Hardness	Restriction Depth L-H	Restriction Thickness L-RV-H
		cm
bedrock, paralithic	moderately coherent	—	—

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon paralithic contact	0—22 22—90 90—200	—- —- —-

Site Soil Temperature
Site Obs. Date	Depth	Sensor Kind	Temperature
	cm		C
5/12/2009	50	—	17

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
44	—	—	1009	—	250	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Oi—0 to 1 centimeters (0.0 to 0.4 inches); slightly decomposed plant material; fragments; abrupt broken boundary.

A—1 to 11 centimeters (0.4 to 4.3 inches); brown (7.5YR 4/3), very dark brown (7.5YR 2.5/3), moist; very channery silt loam; 25 percent sand; 57 percent silt; 18 percent clay; moderate fine granular structure; soft, very friable, slightly sticky, slightly plastic; 10.0 very fine roots and 10.0 fine roots; 10.0 very fine tubular and 2.0 very coarse tubular and 10.0 medium tubular and 10.0 fine tubular and 0.5 coarse tubular pores; 10 percent by volume flat indurated 2-?-150 millimeter phyllite fragments and 30 percent by volume nonflat indurated 2-?-75 millimeter phyllite fragments; neutral, pH 6.6, hellige-truog; clear smooth boundary.

AB—11 to 22 centimeters (4.3 to 8.7 inches); brown (7.5YR 4/4), dark brown (7.5YR 3/4), moist; very gravelly silt loam; 24 percent sand; 57 percent silt; 19 percent clay; moderate fine subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; 10.0 very fine roots and 10.0 very fine roots and 0.5 medium roots; 10.0 very fine tubular and 2.0 medium tubular and 10.0 fine tubular and 2.0 coarse tubular pores; 15 percent by volume flat indurated 2-?-150 millimeter phyllite fragments and 30 percent by volume nonflat indurated 2-?-75 millimeter phyllite fragments; neutral, pH 6.6, hellige-truog; clear wavy boundary.

Bt1—22 to 38 centimeters (8.7 to 15.0 inches); brown (7.5YR 4/4), dark brown (7.5YR 3/4), moist; extremely channery loam; 37 percent sand; 40 percent silt; 23 percent clay; weak medium subangular blocky, and weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 2.0 very fine roots and 2.0 medium roots and 2.0 fine roots and 0.5 coarse roots; 2.0 very fine tubular and 2.0 medium tubular and 10.0 fine tubular pores; 5 percent faint dark brown (7.5YR 3/3), moist, clay films on all faces of peds and 5 percent faint dark brown (7.5YR 3/3), moist, clay films on surfaces along pores; 25 percent by volume nonflat indurated 2-?-75 millimeter phyllite fragments and 35 percent by volume flat indurated 2-?-150 millimeter phyllite fragments; slightly acid, pH 6.4, hellige-truog; clear wavy boundary.

Bt2—38 to 50 centimeters (15.0 to 19.7 inches); yellowish red (5YR 5/6), yellowish red (5YR 4/6), moist; extremely channery clay loam; 35 percent sand; 37 percent silt; 28 percent clay; weak medium subangular blocky, and weak fine subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; 2.0 medium roots and 2.0 fine roots; 2.0 medium tubular and 2.0 fine tubular pores; 5 percent faint reddish brown (5YR 4/4), moist, clay films on surfaces along pores and 10 percent faint reddish brown (5YR 4/4), moist, clay films on all faces of peds; 25 percent by volume nonflat indurated 2-?-75 millimeter phyllite fragments and 40 percent by volume flat indurated 2-?-150 millimeter phyllite fragments; slightly acid, pH 6.3, hellige-truog; clear wavy boundary.

Bt3—50 to 78 centimeters (19.7 to 30.7 inches); yellowish red (5YR 5/6), yellowish red (5YR 4/6), moist; extremely channery silty clay loam; 18 percent sand; 52 percent silt; 30 percent clay; moderate medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; 2.0 medium roots; 2.0 very fine tubular and 2.0 medium tubular and 2.0 fine tubular pores; 15 percent prominent reddish brown (5YR 4/4), moist, clay films on all faces of peds and 15 percent prominent reddish brown (5YR 4/4), moist, clay films on surfaces along pores; 30 percent by volume nonflat indurated 2-?-75 millimeter phyllite fragments and 35 percent by volume flat indurated 2-?-150 millimeter phyllite fragments; slightly acid, pH 6.3, hellige-truog; clear wavy boundary.

Bt4—78 to 90 centimeters (30.7 to 35.4 inches); yellowish red (5YR 5/6), yellowish red (5YR 4/6), moist; very channery silty clay loam; 15 percent sand; 51 percent silt; 34 percent clay; moderate medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; 0.5 fine roots; 2.0 very fine tubular and 2.0 fine tubular pores; 10 percent distinct yellowish red (5YR 4/6), moist, clay films on all faces of peds and 10 percent distinct yellowish red (5YR 4/6), moist, clay films on surfaces along pores; 20 percent by volume nonflat indurated 2-?-75 millimeter phyllite fragments and 25 percent by volume flat indurated 2-?-150 millimeter phyllite fragments; slightly acid, pH 6.2, hellige-truog; abrupt wavy boundary.

Cr—90 to 200 centimeters (35.4 to 78.7 inches); bedrock; fragments.