IDENTIFIERS

  • Current Taxon Name (Soil Name): Umpa
  • OSD
  • Series Extent
  • User Site ID: S1999NV031001
  • User Pedon ID: 99NV031001
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - NSSL
  • Lab Pedon # - 00P0308
  • NCSS Pedon Lab Data NASIS Record ID - 11822
  • Print Date: 4/19/2025

    • 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: 39.2626572
  • Std. Longitude: -119.9794922
  • Datum: WGS84
  • Township: 16N
  • Range: 18E
  • Section: 8
  • PLSS Details: 1435 feet north and 1025 feet west of the Southeast corner of
  • Location Description: Saddlehorn Road 700 feet West of Second Creek
  • Map Unit: 7152—Jorge very cobbly fine sandy loam, 15 to 30 percent slopes, rubbly
  • State: Nevada
  • County: NV031—Washoe
  • MLRA: 22A—Sierra Nevada and Tehachapi Mountains
  • Non-MLRA Soil Survey Area: CA693—Tahoe Basin Area, California and Nevada
  • 7.5 Minute USGS Quad: 39119-C8—Mount Rose, Nevada

    • PEDON

  • Describers Name: LA, FFF
  • Current Taxonomic Class: Loamy-skeletal, isotic, frigid Andic Haploxerolls
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS-horizons copied from PDP 3.x
  • Pedon #: 17
  • Correlated Information:
  • Soil Name - Umpa
  • Classificaton Date - 10/7/2005
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Umpa
  • Taxonomic Class - Loamy-skeletal, isotic, frigid Andic Dystroxerepts
  • Taxon Kind - series
  • Classificaton Date - 11/15/1999
  • Soil Taxonomic Edition - ninth edition
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium derived from volcanic rock
  • Landform: mountain
  • Geomorphic Component Mountains: mountainflank
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Bedrock: moderately coherent volcanic breccia, unspecified at 109cm
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/15/1999 (actual site observation date)
  • 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
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    A1

    BA

    Bt1

    Bt2

    Bt3

    Bt4

    Ct

    3

    5

    18

    38

    58

    71

    81

    5

    18

    38

    58

    71

    81

    109

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    A1

    BA

    Bt1

    Bt2

    Bt3

    Bt4

    Ct

    3

    5

    18

    38

    58

    71

    81

    5

    18

    38

    58

    71

    81

    109

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    10

    10

    9.8

    9.4

    8.7

    8.5

    8.8

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    A1

    BA

    Bt1

    Bt2

    Bt3

    Bt4

    Ct

    3

    5

    18

    38

    58

    71

    81

    5

    18

    38

    58

    71

    81

    109

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    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

    33

    —

    —

    2167

    —

    210

    —

    —

    —

    —

    —

    —

    6

    —

    —

    —

    —

    —

    —

    —
    Oe—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments; abrupt smooth boundary. No sample.
    A1—3 to 5 centimeters (1.2 to 2.0 inches); brown (10YR 4/3), dark brown (10YR 3/3), moist; gravelly sandy loam; 75 percent sand; 10 percent clay; moderate medium subangular blocky, and weak fine subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; 27 percent by volume 2-39-75 millimeter unspecified fragments; slightly acid, pH 6.5, hellige-truog; clear smooth boundary. Lab sample # 00P2242. 10% >1 inch diameter, 18% organic matter by 'visual volume'; Water Repel: Ext. High >10s.; NaF: 9.5; Mst: MS.
    BA—5 to 18 centimeters (2.0 to 7.1 inches); brown (10YR 5/3), dark brown (10YR 3/3), moist; very gravelly sandy loam; 70 percent sand; 12 percent clay; moderate fine granular, and weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; 5 percent by volume 75-162-250 millimeter unspecified fragments and 34 percent by volume 2-39-75 millimeter unspecified fragments; slightly acid, pH 6.5, hellige-truog; gradual smooth boundary. Lab sample # 00P2243. structure clumped by VF roots (1/2 SBK; 1/2 GR); rock fragments 18% >1 inch in diameter, 18% organic matter by 'visual volume'; Water Repel: Mod. High 6s.; NaF: 9.5; Mst: MS.
    Bt1—18 to 38 centimeters (7.1 to 15.0 inches); brown (10YR 5/3), dark brown (7.5YR 3/2), moist; very gravelly sandy loam; 65 percent sand; 14 percent clay; weak very fine and fine granular, and weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; 25 percent faint clay films between sand grains; 2 percent by volume 250-425-600 millimeter unspecified fragments and 8 percent by volume 75-162-250 millimeter unspecified fragments and 27 percent by volume 2-39-75 millimeter unspecified fragments; slightly acid, pH 6.3, hellige-truog; gradual smooth boundary. Lab sample # 00P2244. structure clumped by VF roots (1/2 SBK, 1/2 GR; rock fragments 9% >1 inch in diameter; Water Repel: SL. 2 s.; NaF: 9.3; Mst: MS.
    Bt2—38 to 58 centimeters (15.0 to 22.8 inches); yellowish brown (10YR 5/4), dark brown (7.5YR 3/3), moist; very gravelly fine sandy loam; 55 percent sand; 18 percent clay; weak very fine subangular blocky, and moderate fine and medium subangular blocky, and weak very fine granular structure; moderately hard, friable, moderately sticky; 60 percent faint clay films between sand grains; 2 percent by volume 250-425-600 millimeter unspecified fragments and 8 percent by volume 75-162-250 millimeter unspecified fragments and 30 percent by volume 2-39-75 millimeter unspecified fragments; moderately acid, pH 6.0, hellige-truog; clear smooth boundary. Lab sample # 00P2245. structure 1/2 SBK/ 1/2 GR; rock fragments: 8% >1 inch in diameter; NaF: 9.3; Mst: MS.
    Bt3—58 to 71 centimeters (22.8 to 28.0 inches); brown (7.5YR 5/4), dark brown (7.5YR 3/3), moist; cobbly fine sandy loam; 55 percent sand; 21 percent clay; moderate fine, and weak very fine granular, and moderate fine and medium subangular blocky, and weak coarse subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; 65 percent faint clay films between sand grains; 3 percent by volume 250-425-600 millimeter unspecified fragments and 9 percent by volume 75-162-250 millimeter unspecified fragments and 16 percent by volume 2-39-75 millimeter unspecified fragments; moderately acid, pH 6.0, hellige-truog; clear wavy boundary. Lab sample # 00P2246. structure 65% SBK/ 35% GR; consistence is slightly hard and moderately hard; NaF: 9.0; Mst: MS.
    Bt4—71 to 81 centimeters (28.0 to 31.9 inches); light brown (7.5YR 6/4), brown (7.5YR 4/3), moist; very cobbly fine sandy loam; 50 percent sand; 25 percent clay; moderate fine, and weak very fine granular, and weak very fine and fine, and medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; 70 percent faint clay films on lower surfaces of peds or rocks; 4 percent by volume 250-425-600 millimeter unspecified fragments and 10 percent by volume 75-162-250 millimeter unspecified fragments and 26 percent by volume 2-39-75 millimeter unspecified fragments; slightly acid, pH 6.3, hellige-truog; clear wavy boundary. Lab sample # 00P2247. structure: 1/2 SBK/35% GR; Consistence is slightly hard and moderately hard; NaF: <9; Mst: MS.; continuous - phpvsfiid 206114; continuous - phpvsfiid 206114
    Ct—81 to 109 centimeters (31.9 to 42.9 inches); brown (7.5YR 5/3) and light brown (7.5YR 6/3), strong brown (7.5YR 4/6) and dark brown (7.5YR 3/3), moist; sandy loam; 50 percent sand; 30 percent clay; massive; very hard, very firm, moderately sticky, moderately plastic; 75 percent faint clay films on lower surfaces of peds or rocks; fragments; slightly acid, pH 6.4, hellige-truog; diffuse wavy boundary. Lab sample # 00P2248. rock fragments are paragravelly; NaF: <9; Mst: MS.; continuous - phpvsfiid 206115; continuous - phpvsfiid 206115
    Crt—109 to 142 centimeters (42.9 to 55.9 inches); pink (7.5YR 7/4) and reddish yellow (7.5YR 7/6), brown (7.5YR 4/4) and strong brown (7.5YR 5/6), moist; sandy loam; 50 percent sand; 30 percent clay; massive; very hard, very firm, moderately sticky, moderately plastic; 75 percent faint clay films on lower surfaces of peds or rocks; fragments; slightly acid, pH 6.5, hellige-truog. Lab sample # 00P2249. rock fragments are paragravelly; NaF: <9; Mst: MS.; continuous - phpvsfiid 206116; continuous - phpvsfiid 206116