IDENTIFIERS

  • Current Taxon Name (Soil Name): Lanphere
  • OSD
  • Series Extent
  • User Site ID: S2011CA087001
  • User Pedon ID: S2011CA087001
  • Vegetation Plot ID: S2011CA087001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Print Date: 12/6/2025

    • 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: 37.0500833
  • Std. Longitude: -122.2265000
  • Datum: WGS84
  • Location Description: Scott's Valley floodplain/stream terrace on Swanton Pacific Ranch, approximately 9 miles north of Santa Cruz, CA, in MLRA 4B-7.
  • Country: US—United States
  • State: California
  • County: CA087—Santa Cruz
  • MLRA: 4—California Coastal Redwood Belt
  • Regional Office: SW—Southwest
  • MLRA Soil Survey Area: SW-TEM—Templeton, California
  • Non-MLRA Soil Survey Area: CA087—Santa Cruz County, California

    • PEDON

  • Describers Name: Phil Smith, Ron Taskey
  • Current Taxonomic Class: Mixed, isomesic Typic Udipsamments
  • Current Taxon Kind: family
  • Pedon Type: not classified to current taxon name
  • Pedon Purpose: research site
  • Pedon Record Orgin: PedonPC
  • Sampled As Information:
  • Soil Name - Lanphere
  • Taxonomic Class - Mixed, isomesic Typic Udipsamments
  • PSC - 25 to 100 cm.
  • Classificaton Date - 11/4/2011
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - udic
  • Moisture SUBClass - udic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium derived from mudstone and/or alluvium derived from granite
  • Landscape: valley
  • Landform: stream terrace
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: negligible
  • Drainage Class: moderately well
  • Flooding: rare flooding for extremely brief periods
  • Ponding: none ponding
  • Geology: Quat. Alluvium formation.
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/4/2011 (actual site observation date)
  • Surface Water Kind: none observed
  • Plant Association Name: Annual grass and forbs
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - other grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - sunny
  • Current Air Temp - 17
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    2FA

    2GA

    —

    —

    Forb, annual

    Grass, annual

    —

    —

    —

    —

    —

    —
    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    0—20

    —2—
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    11/4/2011

    50

    —

    14
    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

    1

    —

    —

    9

    —

    180

    690

    —

    275

    14

    —

    —

    —

    —

    —

    —

    —

    SPR1

    SPR1-Fish Trap

    SM/ST
    Ap1—0 to 6 centimeters (0.0 to 2.4 inches); black (10YR 2/1), grayish brown (10YR 5/2), dry; fine sandy loam; 55 percent sand; 33 percent silt; 12 percent clay; strong fine granular, and strong medium granular structure; soft, very friable, nonsticky, slightly plastic; 2.0 very fine roots between peds and 1.0 fine roots between peds; 15.0 medium tubular and 3.0 fine dendritic tubular pores; 8 percent fine mica flakes, unspecified; 3 percent by volume flat subangular 10-?-20 millimeter mudstone fragments; neutral, pH 7.2, pH meter; abrupt wavy boundary.; very moist when described; observed in pit, small
    Ap2—6 to 20 centimeters (2.4 to 7.9 inches); 60 percent black (10YR 2/1) and 40 percent very dark brown (10YR 2/2), 60 percent grayish brown (10YR 5/2) and 40 percent dark gray (10YR 4/1), dry; fine sandy loam; 55 percent sand; 33 percent silt; 12 percent clay; strong fine granular, and strong medium granular, and moderate fine subangular blocky structure; soft, very friable, nonsticky, slightly plastic; 2.0 very fine roots between peds and 1.0 medium roots throughout and 1.0 fine roots between peds; 12.0 medium tubular and 3.0 fine dendritic tubular pores; 8 percent fine mica flakes, unspecified; 3 percent by volume flat subangular 10-?-20 millimeter mudstone fragments; neutral, pH 6.9, pH meter; abrupt wavy boundary.; observed in pit, small
    ABt1—20 to 52 centimeters (7.9 to 20.5 inches); 80 percent brown (10YR 4/3) and 20 percent very dark brown (10YR 2/2), pale brown (10YR 6/3), dry; fine sandy loam; 60 percent sand; 32 percent silt; 8 percent clay; structureless massive; soft, very friable, nonsticky, nonplastic; 3.0 very fine roots throughout and 0.1 medium roots throughout; 2.0 medium tubular and 1.0 fine dendritic tubular pores; 10 percent prominent organoargillans; 8 percent fine mica flakes, unspecified; 3 percent by volume flat subangular 10-?-20 millimeter mudstone fragments; neutral, pH 6.9, pH meter; abrupt wavy boundary.; observed in pit, small
    ABt2—52 to 75 centimeters (20.5 to 29.5 inches); 90 percent dark yellowish brown (10YR 4/4) and 10 percent very dark brown (10YR 2/2), 90 percent pale brown (10YR 6/3) and 10 percent grayish brown (10YR 5/2), dry; fine sandy loam; 55 percent sand; 33 percent silt; 12 percent clay; structureless massive; soft, very friable, nonsticky, slightly plastic; 0.8 very fine roots throughout and 0.2 fine roots throughout; 1.0 fine dendritic tubular pores; 10 percent prominent organoargillans; 8 percent mica flakes, unspecified; 3 percent by volume flat subangular 10-?-20 millimeter mudstone fragments; neutral, pH 7.2, pH meter; abrupt wavy boundary.; observed in pit, small
    2C—75 to 95 centimeters (29.5 to 37.4 inches); 90 percent yellowish brown (10YR 5/4) and 10 percent very dark grayish brown (10YR 3/2), pale brown (10YR 6/3), dry; very fine sandy loam; 60 percent sand; 30 percent silt; 10 percent clay; structureless massive; soft, very friable, nonsticky, nonplastic; 0.3 very fine roots throughout; 0.1 very fine dendritic tubular pores; 11 percent fine mica flakes, unspecified; 1 percent by volume 2-?-5 millimeter charcoal fragments and 3 percent by volume flat subangular 10-?-20 millimeter mudstone fragments; neutral, pH 7.3, pH meter; very abrupt wavy boundary.; observed in pit, small
    3C1—95 to 125 centimeters (37.4 to 49.2 inches); light yellowish brown (10YR 6/4), very pale brown (10YR 7/4), dry; stratified stratified coarse sand; 95 percent sand; 4 percent silt; 1 percent clay; structureless single grain; loose, loose, nonsticky, nonplastic; 8 percent fine mica flakes, unspecified; 6 percent by volume flat subangular 2-?-10 millimeter mudstone fragments; slightly alkaline, pH 7.4, pH meter; very abrupt wavy boundary.; observed in pit, small
    3C2—125 to 153 centimeters (49.2 to 60.2 inches); 50 percent strong brown (7.5YR 4/6) and 45 percent yellowish red (5YR 4/6) and 5 percent black (7.5YR 2/1), reddish yellow (7.5YR 7/6), dry; stratified stratified channery coarse sand; 95 percent sand; 4 percent silt; 1 percent clay; structureless single grain; loose, loose, nonsticky, nonplastic; 1 percent by volume nonflat subrounded 20-?-75 millimeter granite fragments and 3 percent by volume flat subangular 20-?-50 millimeter mudstone fragments and 3 percent by volume flat subangular 50-?-150 millimeter mudstone fragments and 5 percent by volume flat subangular 10-?-20 millimeter mudstone fragments and 5 percent by volume nonflat subrounded 2-?-5 millimeter granite fragments; slightly alkaline, pH 7.4, pH meter.; observed in pit, small