Official Series Description


Lab Data Summary

Aggregate lab data for the SPEARFISH soil series. This aggregation is based on all pedons with a current taxon name of SPEARFISH, and applied along 1-cm thick depth slices. Solid lines are the slice-wise median, bounded on either side by the interval defined by the slice-wise 5th and 95th percentiles. The median is the value that splits the data in half. Five percent of the data are less than the 5th percentile, and five percent of the data are greater than the 95th percentile. Values along the right hand side y-axis describe the proportion of pedon data that contribute to aggregate values at this depth. For example, a value of "90%" at 25cm means that 90% of the pedons correlated to SPEARFISH were used in the calculation. Source: KSSL snapshot . Methods used to assemble the KSSL snapshot used by SoilWeb / SDE

There are insufficient data to create the lab data summary figure.


Water Balance

Monthly water balance estimated using a leaky-bucket style model for the SPEARFISH soil series. Monthly precipitation (PPT) and potential evapotranspiration (PET) have been estimated from the 50th percentile of gridded values (PRISM 1981-2010) overlapping with the extent of SSURGO map units containing each series as a major component. Monthly PET values were estimated using the method of Thornthwaite (1948). These (and other) climatic parameters are calculated with each SSURGO refresh and provided by the fetchOSD function of the soilDB package. Representative water storage values (“AWC” in the figures) were derived from SSURGO by taking the 50th percentile of profile-total water storage (sum[awc_r * horizon thickness]) for each soil series. Note that this representation of “water storage” is based on the average ability of most plants to extract soil water between 15 bar (“permanent wilting point”) and 1/3 bar (“field capacity”) matric potential. Soil moisture state can be roughly interpreted as “dry” when storage is depleted, “moist” when storage is between 0mm and AWC, and “wet” when there is a surplus. Clearly there are a lot of assumptions baked into this kind of monthly water balance. This is still a work in progress.

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Sibling Summary

Siblings are those soil series that occur together in map units, in this case with the SPEARFISH series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot , parsed OSD records and snapshot of SC database .

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Select annual climate data summaries for the SPEARFISH series and siblings. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data .

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Geomorphic description summaries for the SPEARFISH series and siblings. Series are sorted according to hierarchical clustering of proportions and relative hydrologic position within an idealized landform (e.g. top to bottom). Most soil series (SSURGO components) are associated with a hillslope position and one or more landform-specific positions: hills, mountain slopes, terraces, and/or flats. Proportions can be interpreted as an aggregate representation of geomorphic membership. The values printed to the left (number of component records) and right (Shannon entropy) of stacked bars can be used to judge the reliability of trends. Small Shannon entropy values suggest relatively consistent geomorphic association, while larger values suggest lack thereof. Source: SSURGO component records .

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Competing Series

Soil series competing with SPEARFISH share the same family level classification in Soil Taxonomy. Source: parsed OSD records and snapshot of the SC database .

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Select annual climate data summaries for the SPEARFISH series and competing. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data .

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Geomorphic description summaries for the SPEARFISH series and competing. Series are sorted according to hierarchical clustering of proportions and relative hydrologic position within an idealized landform (e.g. top to bottom). Proportions can be interpreted as an aggregate representation of geomorphic membership. Most soil series (SSURGO components) are associated with a hillslope position and one or more landform-specific positions: hills, mountain slopes, terraces, and/or flats. The values printed to the left (number of component records) and right (Shannon entropy) of stacked bars can be used to judge the reliability of trends. Shannon entropy values close to 0 represent soil series with relatively consistent geomorphic association, while values close to 1 suggest lack thereof. Source: SSURGO component records .

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There are insufficient data to create the 3D flats position figure.

Soil series sharing subgroup-level classification with SPEARFISH, arranged according to family differentiae. Hovering over a series name will print full classification and a small sketch from the OSD. Source: snapshot of SC database .

Block Diagrams

No block diagrams are available.

Map Units

Map units containing SPEARFISH as a major component. Limited to 250 records.

Map Unit Name Symbol Map Unit Area (ac) Map Unit Key National Map Unit Symbol Soil Survey Area Publication Date Map Scale
Spearfish-Pultney association, hillySSd16686346145cm5zmt60719701:24000
Spearfish-Rock outcrop complex, very steepSSb8646346143cm5xmt60719701:24000
Spearfish-Pultney association, rollingSSc5130346144cm5ymt60719701:24000
Spearfish-Clapper complex, hillySSa3271346142cm5wmt60719701:24000
Spearfish-Shale outcrop complex, hillySO5294347145cn77mt61119711:24000
Nevee-Spearfish silt loams, 6 to 20 percent slopesP256D79627680942rvf5sd01919701:24000
Spearfish-Rock outcrop complex, 10 to 60 percent slopesP480F38926688832rxvssd01919701:24000
Spearfish, dry-Rock outcrop complex, 10 to 60 percent slopesP482F236827331582rxvtsd04719801:24000
Spearfish-Tilford extremely stony loams, dry, 6 to 25 percent slopesP484E64127331592rxvwsd04719801:24000
Spearfish, cool-Rock outcrop complex, 9 to 50 percent slopesQ0668F50724356932mrjrsd04719801:24000
Spearfish-Nevee silt loams, dry, 9 to 30 percent slopesP476E6527681072rxsgsd04719801:24000
Nevee-Spearfish silt loams, 6 to 20 percent slopesP256D374127332592rvf5sd08120071:24000
Nevee-Spearfish silt loams, very stony, 10 to 40 percent slopesP258E196327332602rvf6sd08120071:24000
Spearfish-Nevee-Gullied land complex, 6 to 30 percent slopesP478E69127332692rxvrsd08120071:24000
Rekop-Spearfish-Rock outcrop complex, moist, 15 to 60 percent slopesP390F29727332672rwfhsd08120071:24000
Colnevee-Spearfish, cool silt loams, moist, 6 to 20 percent slopesQ0906D15124265702mg1gsd08120071:24000
Spearfish-Rock outcrop complex, 10 to 60 percent slopesP480F2527332702rxvssd08120071:24000
Nevee-Spearfish silt loams, 6 to 20 percent slopesP256D336727334282rvf5sd60019741:24000
Spearfish-Rock outcrop complex, 10 to 60 percent slopesP480F77327456362rxvssd60019741:24000
Spearfish-Rock outcrop complex, 15 to 40 percent slopesSlE121354350cwqnsd60019741:24000
Nevee-Spearfish complex, 6 to 15 percent slopesNaD100354332cwq2sd60019741:24000
Spearfish-Nevee silt loams, dry, 9 to 30 percent slopesP476E222327456922rxsgsd60720111:24000
Spearfish, dry-Rock outcrop complex, 10 to 60 percent slopesP482F218527456932rxvtsd60720111:24000
Nevee-Spearfish silt loams, 6 to 20 percent slopesP256D140527681402rvf5sd60720111:24000
Spearfish, cool-Colnevee silt loams, 9 to 30 percent slopesQ0667E29025864722ml24sd60720111:24000
Spearfish, cool-Rock outcrop complex, 9 to 50 percent slopesQ0668F6325864072mrjrsd60720111:24000
Spearfish-Rock outcrop complex, 10 to 60 percent slopesP480F4127845402rxvssd60720111:24000
Spearfish-Rock outcrop complex, 10 to 60 percent slopesP480F933727459262rxvswy01119781:24000
Spearfish-Nevee-Gullied land complex, 6 to 30 percent slopesP478E292027457372rxvrwy01119781:24000
Nevee-Spearfish-Barnum, channeled, flooded complex, 2 to 40 percent slopesP260E169727457362rvf9wy01119781:24000
Colnevee-Spearfish, cool silt loams, moist, 6 to 20 percent slopesQ0906D11225137372mg1gwy01119781:24000
Nevee-Spearfish silt loams, 6 to 20 percent slopesP256D5427459482rvf5wy01119781:24000
Nevee-Spearfish silt loams, very stony, 10 to 40 percent slopesP258E3127459492rvf6wy01119781:24000
Spearfish-Sixmile-Rock outcrop complex, 5 to 45 percent slopes22613611045813htlwy03119981:24000
Spearfish-Travessilla-Rock outcrop complex, 10 to 60 pe rcent slopes6444091152111538twy04319761:24000
Neville-Spearfish-Rock outcrop association5535598152101538hwy04319761:24000
Vale-Tensleep association72343781521205393wy04319761:24000
Rekop-Gystrum association5829274152104538lwy04319761:24000
Rock outcrop-Spearfish complex, 1 to 60 percent slopes624626152109538rwy04319761:24000
Nevee-Spearfish-Barnum, channeled, flooded complex, 2 to 40 percent slopesP260E30027459812rvf9wy04519841:24000
Colnevee-Spearfish, cool silt loams, moist, 6 to 20 percent slopesQ0906D5125137382mg1gwy04519841:24000
Spearfish-Shale outcrop complex, steepSPE25019350935cs5hwy61919711:24000
Connerton-Spearfish associationCS6358350829cs22wy61919711:24000
Vale-Tensleep association7214816481wdm3wy61919711:24000
Chilton Variant-Sunup-Spearfish Variant association, 5 to 60 percent slopes12112215802359fjwy65019821:24000

Map of Series Extent

Approximate geographic distribution of the SPEARFISH soil series. To learn more about how this distribution was mapped, or to compare this soil series extent to others, use the Series Extent Explorer (SEE) application. Source: generalization of SSURGO geometry .