IDENTIFIERS
Current Taxon Name (Soil Name):
Tahoma
OSD
Series Extent
User Site ID:
99CA693-005
User Pedon ID:
S99CA061003
Lab Information:
Certified Lab Pedon Description -
no
Lab Source ID -
NSSL
Lab Pedon # -
00P0045
NCSS Pedon Lab Data NASIS Record ID -
11553
Print Date:
11/21/2024
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:
39.1876861
Std. Longitude:
-120.1599250
Datum:
WGS84
Map Unit:
7222—Tahoma-Jorge complex, 2 to 15 percent slopes
Non-MLRA Soil Survey Area:
CA693—Tahoe Basin Area, California and Nevada
PEDON
Describers Name:
LA, FFF
Current Taxonomic Class:
Fine, isotic, frigid Alfic Haploxerands
Current Taxon Kind:
series
Pedon Type:
not classified to current taxon name
Pedon Purpose:
full pedon description
Pedon Record Orgin:
NASIS
Pedon #:
5
Correlated Information:
Soil Name -
Tahoma
PSC -
5 to 105 cm.
Classificaton Date -
10/7/2005
Soil Taxonomic Edition -
ninth edition
Moisture Class -
xeric
Moisture Subclass -
typic
Sampled As Information:
Soil Name -
Tahoma
Classificaton Date -
9/16/1999
Dynamic Soil Properties:
Pedoderm Loose Cover Indicator -
no
Hydric:
no
SITE
Parent Material:
colluvium derived from andesite over residuum weathered from andesite
Landform:
mountain
Surface Fragments:
20.00 percent nonflat 2- to 75-millimeter andesite,
Benchmark Soil?:
no
VEGETATION
SITE OBSERVATION
Observation Date:
9/16/1999 (actual site observation date)
Air Photo ID:
2
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
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
6
—
—
2122
—
90
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Oi—0 to 5 centimeters (0.0 to 2.0 inches); slightly decomposed plant material; fragments.
A—5 to 10 centimeters (2.0 to 3.9 inches); brown (10YR 4/3), very dark grayish brown (10YR 3/2), moist; extremely gravelly sandy loam; 65 percent sand; 26 percent silt; 9 percent clay; weak very fine granular, and weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; 5.0 very fine roots and 1.0 medium roots and 0.1 fine roots; 63 percent by volume nonflat 2-?-75 millimeter andesite fragments; slightly acid, pH 6.5, hellige-truog; clear smooth boundary.; moderately dry when described;
Bw1—10 to 30 centimeters (3.9 to 11.8 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; very gravelly sandy loam; 60 percent sand; 30 percent silt; 10 percent clay; weak medium subangular blocky, and weak very fine granular, and weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; 3.0 very fine roots and 5.0 medium roots and 1.0 fine roots; 40 percent by volume nonflat 2-?-75 millimeter andesite fragments; slightly acid, pH 6.5, hellige-truog; clear smooth boundary.; moderately dry when described;
Bw2—30 to 64 centimeters (11.8 to 25.2 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; very cobbly sandy loam; 60 percent sand; 30 percent silt; 10 percent clay; weak very fine granular, and weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; 1.0 very coarse roots and 3.0 medium roots and 0.5 fine roots and 1.0 coarse roots; 5 percent by volume nonflat 250-?-600 millimeter andesite fragments and 10 percent by volume nonflat 75-?-250 millimeter andesite fragments and 30 percent by volume nonflat 2-?-75 millimeter andesite fragments; slightly acid, pH 6.3, hellige-truog; abrupt wavy boundary.; moderately dry when described;
Bt1—64 to 102 centimeters (25.2 to 40.2 inches); brown (7.5YR 4/4), brown (7.5YR 4/3), moist; gravelly clay loam; 40 percent sand; 28 percent silt; 32 percent clay; massive; hard, very firm, moderately sticky, moderately plastic; 1.0 medium roots and 0.1 fine roots; 5 percent by volume nonflat 75-?-250 millimeter andesite fragments and 24 percent by volume nonflat 2-?-75 millimeter andesite fragments; slightly acid, pH 6.2, hellige-truog; diffuse smooth boundary.; slightly dry when described;
Bt2—102 to 152 centimeters (40.2 to 59.8 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; clay loam; 25 percent sand; 40 percent silt; 35 percent clay; massive; hard, very firm, moderately sticky, moderately plastic; 0.1 fine roots; 5 percent by volume nonflat 2-?-75 millimeter andesite fragments; slightly acid, pH 6.2, hellige-truog.; slightly moist when described;