IDENTIFIERS
Current Taxon Name (Soil Name):
Altamont
OSD
Series Extent
User Site ID:
93CA011001
User Pedon ID:
93CA011001
Vegetation Plot ID:
93CA011001
Lab Information:
Certified Lab Pedon Description -
no
Lab Source ID -
NSSL
Lab Pedon # -
94P0049
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:
39.3455556
Std. Longitude:
-122.3230556
Datum:
WGS84
Map Unit:
215—Altamont-Sehorn complex, 15 to 30 percent slopes
State:
California
County:
CA011—Colusa
MLRA:
17—Sacramento and San Joaquin Valleys
Non-MLRA Soil Survey Area:
CA011—Colusa County, California
7.5 Minute USGS Quad:
39122-C3—Sites, California
PEDON
Describers Name:
Joe Jahnke, Bill Reed, and Maxine Levin
Current Taxonomic Class:
Fine, smectitic, thermic Typic Haploxererts
Current Taxon Kind:
series
Pedon Type:
classifies to current taxon name, full description
Pedon Purpose:
research site
Pedon Record Orgin:
Converted from PDP 3.x
Correlated Information:
Soil Name -
Altamont
PSC -
25 to 100 cm.
Classificaton Date -
11/9/2005
Soil Taxonomic Edition -
seventh edition
Moisture Class -
xeric
Moisture Subclass -
typic
Sampled As Information:
Soil Name -
Altamont Low
Classificaton Date -
9/21/1993
Dynamic Soil Properties:
Erosion Class -
3
Pedoderm Loose Cover Indicator -
no
Hydric:
no
SITE
Landscape:
hills
Landform:
hillside
Anthropogenic Feature:
leveled land
Geomorphic Component Hills:
side slope
Hill Slope Profile:
backslope
Slope Position:
middle third
Slope Complexity:
simple
Slope Shape Across:
linear
Slope Shape Down:
linear
Runoff:
low
Drainage Class:
well
Flooding:
none flooding
Bedrock:
s moderate weathered mudstone with <10 and a strike of 190 degrees and a dip of 90 to 90 degrees
Surface Fragments:
Benchmark Soil?:
no
VEGETATION
SITE OBSERVATION
Observation Date:
9/21/1993 (actual site observation date)
Microrelief Elevation:
0
Surface Cover Properties:
Site Obs. Cover Kind 1 -
grass/herbaceous cover
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
MEPO3
Medicago polymorpha
burclover
—
—
—
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
35
278
163
450
—
315
170
—
—
—
—
—
—
—
—
—
—
—
Colusa SW
—
A—0 to 14 centimeters (0.0 to 5.5 inches); olive brown (2.5Y 4/4) exterior, olive brown (2.5Y 4/4) exterior, moist; clay; 40 percent clay; moderate coarse subangular blocky, and weak fine subangular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 3.0 very fine roots throughout; 0.5 very fine low-continuity tubular pores; 1 percent by volume angular 2-39-75 millimeter shale, unspecified fragments; noneffervescent, by hcl, 1n; clear smooth boundary. Lab sample # 94P0423; observed in trench. Polygon #1B
Bw—14 to 35 centimeters (5.5 to 13.8 inches); light olive brown (2.5Y 5/3) exterior, olive brown (2.5Y 4/3) exterior, moist; clay; 45 percent clay; strong coarse and very coarse angular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 0.5 very fine low-continuity tubular pores; 2 percent prominent olive brown (2.5Y 4/3), moist, slickensides (pedogenic) on faces of peds; 1 percent by volume angular 2-39-75 millimeter shale, unspecified fragments; noneffervescent, by hcl, 1n; gradual wavy boundary. Lab sample # 94P0424; observed in trench. Polygon #2B; patchy - phpvsfiid 207389; patchy - phpvsfiid 207389
Bss1—35 to 72 centimeters (13.8 to 28.3 inches); light olive brown (2.5Y 5/3) exterior, olive brown (2.5Y 4/3) exterior, moist; clay; 45 percent clay; strong coarse and very coarse angular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 0.5 very fine low-continuity tubular pores; 60 percent prominent olive brown (2.5Y 4/3), moist, slickensides (pedogenic) on faces of peds and 70 percent prominent olive brown (2.5Y 4/3), moist, pressure faces on faces of peds; 1 percent by volume angular 2-39-75 millimeter shale, unspecified fragments; noneffervescent, by hcl, 1n; gradual wavy boundary. Lab sample # 94P0425; observed in trench. Polygon #7; continuous - phpvsfiid 207390; patchy - phpvsfiid 207391; continuous - phpvsfiid 207390; patchy - phpvsfiid 207391
Bss2—72 to 96 centimeters (28.3 to 37.8 inches); light olive brown (2.5Y 5/3) exterior, olive brown (2.5Y 4/3) exterior, moist; clay; 45 percent clay; strong coarse and very coarse angular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 0.5 very fine low-continuity tubular pores; 60 percent prominent olive brown (2.5Y 4/3), moist, slickensides (pedogenic) on faces of peds and 70 percent prominent olive brown (2.5Y 4/3), moist, pressure faces on faces of peds; 1 percent by volume angular 2-39-75 millimeter shale, unspecified fragments; noneffervescent, by hcl, 1n; clear wavy boundary. Lab sample # 94P0426; observed in trench. Polygon #8; continuous - phpvsfiid 207392; patchy - phpvsfiid 207393; continuous - phpvsfiid 207392; patchy - phpvsfiid 207393
BC1—96 to 107 centimeters (37.8 to 42.1 inches); light olive brown (2.5Y 5/4) exterior, olive brown (2.5Y 4/4) exterior, moist; gravelly clay; 45 percent clay; moderate medium angular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 0.5 very fine low-continuity tubular pores; 30 percent prominent olive brown (2.5Y 4/4), moist, pressure faces on faces of peds and 60 percent prominent olive brown (2.5Y 4/4), moist, slickensides (pedogenic) on faces of peds; 20 percent by volume angular 2-39-75 millimeter shale, unspecified fragments; noneffervescent, by hcl, 1n; clear wavy boundary. Lab sample # 94P0427; observed in trench. Polygon #11; continuous - phpvsfiid 207394; patchy - phpvsfiid 207395; continuous - phpvsfiid 207394; patchy - phpvsfiid 207395
BC2—107 to 190 centimeters (42.1 to 74.8 inches); light olive brown (2.5Y 5/4) exterior, olive brown (2.5Y 4/4) exterior, moist; extremely gravelly clay; 40 percent clay; weak medium angular blocky structure; slightly hard, friable, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 3.0 very fine low-continuity interstitial pores; 5 percent by volume angular 75-162-250 millimeter unspecified fragments and 60 percent by volume angular 2-39-75 millimeter shale, unspecified fragments; noneffervescent, by hcl, 1n; abrupt wavy boundary. Lab sample # 94P0428; observed in trench. Polygon #12A
R—190 to 215 centimeters (74.8 to 84.6 inches); fragments. Lab sample # 94P0429; observed in trench. Polygon #13A