IDENTIFIERS

Current Taxon Name (Soil Name): Hillgate

OSD

Series Extent

User Site ID: S1991CA011001

User Pedon ID: 91CA011001

Vegetation Plot ID: S1991CA011001

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 91P0758

NCSS Pedon Lab Data NASIS Record ID - 63797

Print Date: 5/17/2024

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: 39.2874985

Std. Longitude: -122.4722214

Datum: WGS84

Township: 17N

Range: 5W

Section: 31

Location Description: Lodoga 15 minute Quad.

State: California

County: CA011—Colusa

MLRA: 15—Central California Coast Range

PEDON

Describers Name: Joe Jahnke and Wayne Sheldon

Current Taxonomic Class: Fine-loamy, mixed, mesic Haplic Palexeralfs

Current Taxon Kind: series

Pedon Purpose: full pedon description

Pedon Record Orgin: Converted from SSL-CMS data

Pedon #: 1

Correlated Information:

Soil Name - Hillgate

PSC - 8 to 58 cm.

Classificaton Date - 2/1/2010

Moisture Class - xeric

Sampled As Information:

Soil Name - Contra Costa T

Classificaton Date - 5/1/1991

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Landscape: hills

Landform: playa or alluvial flat

Runoff: low

Drainage Class: well

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 5/1/1991 (actual site observation date)

Microrelief Elevation: 1

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Site Obs. Cover Kind 2 - rangeland, grassland

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Site Erosion Accelerated: water erosion

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
BRMO2 BRRU2 PHTUS	Bromus mollis Bromus rubens Phalaris tuberosa var. stenoptera	— red brome —	— — —	— — —	— — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon	0—25 8—114	—- —-

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
4	—	—	480	—	180	51	—	—	15	23	7	17	24	9	—	—	—	2640	—

A1—0 to 3 centimeters (0.0 to 1.2 inches); brown (7.5YR 5/4) exterior, brown (7.5YR 4/4) exterior, moist; loam; 24 percent clay; moderate medium platy structure; slightly hard, very friable, slightly sticky, moderately plastic; 5.5 very fine roots throughout and 0.5 fine roots throughout; 2.5 very fine tubular and 2.5 very fine interstitial pores; fragments; moderately acid, pH 6.0, hellige-truog; abrupt smooth boundary. Lab sample # 91P04324; dry when described;. few fine roots throughout; many very fine roots throughout

A2—3 to 8 centimeters (1.2 to 3.1 inches); brown (7.5YR 5/4) exterior, brown (7.5YR 4/4) exterior, moist; loam; 26 percent clay; strong coarse platy structure; slightly hard, very friable, slightly sticky, moderately plastic; 5.5 very fine roots throughout and 0.5 fine roots throughout; 2.5 very fine tubular and 2.5 very fine interstitial pores; fragments; moderately acid, pH 6.0, hellige-truog; abrupt smooth boundary. Lab sample # 91P04325; dry when described;. few fine roots throughout; many very fine roots throughout

Bt1—8 to 23 centimeters (3.1 to 9.1 inches); strong brown (7.5YR 5/6) exterior, strong brown (7.5YR 4/6) exterior, moist; clay; 42 percent clay; strong coarse prismatic structure; very hard, very firm, very sticky, very plastic; 5.5 very fine roots throughout and 0.5 fine roots throughout; 2.5 very fine tubular and 0.5 fine tubular pores; 37 percent distinct clay films on faces of peds and in pores; fragments; moderately acid, pH 6.0, hellige-truog; clear smooth boundary. Lab sample # 91P04326; dry when described;. common clay films surface features on faces of peds and in pores; few fine roots throughout; many very fine roots throughout; continuous - phpvsfiid 226978; continuous - phpvsfiid 226978

Bt2—23 to 56 centimeters (9.1 to 22.0 inches); strong brown (7.5YR 5/6) exterior, strong brown (7.5YR 4/6) exterior, moist; clay; 47 percent clay; strong medium prismatic, and moderate medium angular blocky structure; very hard, very firm, very sticky, very plastic; 2.5 very fine roots throughout; 2.5 very fine tubular pores; 55 percent distinct , moist, clay films on faces of peds and in pores; fragments; slightly acid, pH 6.2, hellige-truog; clear smooth boundary. Lab sample # 91P04327; moist when described;. many clay films surface features on faces of peds and in pores; common very fine roots throughout; continuous - phpvsfiid 226979; continuous - phpvsfiid 226979

Bt3—56 to 74 centimeters (22.0 to 29.1 inches); strong brown (7.5YR 5/6) exterior, strong brown (7.5YR 4/6) exterior, moist; cobbly clay loam; 38 percent clay; moderate medium angular blocky structure; hard, firm, very sticky, moderately plastic; 0.5 very fine roots throughout; 0.5 very fine tubular pores; 55 percent distinct , moist, clay films on faces of peds and in pores; 5 percent by volume 2-39-75 millimeter metamorphic, unspecified fragments and 10 percent by volume 75-162-250 millimeter metamorphic, unspecified fragments; slightly acid, pH 6.2, hellige-truog; clear smooth boundary. Lab sample # 91P04328; moist when described;. many clay films surface features on faces of peds and in pores; few very fine roots throughout; continuous - phpvsfiid 226980; continuous - phpvsfiid 226980

Bt4—74 to 94 centimeters (29.1 to 37.0 inches); reddish yellow (7.5YR 6/6) exterior, strong brown (7.5YR 4/6) exterior, moist; clay loam; 36 percent clay; moderate medium angular blocky structure; hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots throughout; 0.5 very fine tubular pores; 37 percent distinct , moist, clay films on faces of peds and in pores; 5 percent by volume 2-39-75 millimeter metamorphic, unspecified fragments; slightly acid, pH 6.5, hellige-truog; clear smooth boundary. Lab sample # 91P04329; moist when described;. common clay films surface features on faces of peds and in pores; few very fine roots throughout; continuous - phpvsfiid 234176; continuous - phpvsfiid 234176

Bt5—94 to 114 centimeters (37.0 to 44.9 inches); reddish yellow (7.5YR 6/6) exterior, strong brown (7.5YR 4/6) exterior, moist; clay loam; 34 percent clay; moderate fine angular blocky structure; hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots throughout; 0.5 very fine tubular pores; 37 percent distinct , moist, clay films on faces of peds and in pores; 5 percent by volume 2-39-75 millimeter metamorphic, unspecified fragments; slightly acid, pH 6.5, hellige-truog; clear smooth boundary. Lab sample # 91P04330; moist when described;. common clay films surface features on faces of peds and in pores; few very fine roots throughout; continuous - phpvsfiid 234177; continuous - phpvsfiid 234177

BCt—114 to 155 centimeters (44.9 to 61.0 inches); reddish yellow (7.5YR 6/6) exterior, strong brown (7.5YR 5/6) exterior, moist; clay loam; 30 percent clay; weak medium angular blocky structure; slightly hard, very friable, moderately sticky, moderately plastic; 0.5 very fine roots throughout; 0.5 very fine tubular pores; 37 percent distinct , moist, clay films on faces of peds and in pores; fragments; slightly acid, pH 6.5, hellige-truog. Lab sample # 91P04331; moist when described;. common clay films surface features on faces of peds and in pores; few very fine roots throughout; continuous - phpvsfiid 234178; continuous - phpvsfiid 234178

155 to 180 centimeters (61.0 to 70.9 inches);, strong brown (7.5YR 5/6) exterior, moist; clay loam; fragments. Lab sample # 91P04332

180 to 193 centimeters (70.9 to 76.0 inches);, strong brown (7.5YR 4/6) exterior, moist; clay loam; fragments. Lab sample # 91P04333