Soil Data Explorer - SPEARFISH

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 (updated 2020-03-13). 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.

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 (updated 2024-10-24), parsed OSD records (updated 2024-10-23) and snapshot of SC database (updated 2024-10-23).

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 (updated 2024-10-23).

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 (updated 2024-10-23).

Competing Series

Soil series competing with SPEARFISH share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2024-10-23) and snapshot of the SC database (updated 2024-10-23).

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 (updated 2024-10-23).

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 (updated 2024-10-23).

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 (updated 2024-10-23).

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, hilly	SSd	16686	346145	cm5z	mt607	1970	1:24000
Spearfish-Rock outcrop complex, very steep	SSb	8646	346143	cm5x	mt607	1970	1:24000
Spearfish-Pultney association, rolling	SSc	5130	346144	cm5y	mt607	1970	1:24000
Spearfish-Clapper complex, hilly	SSa	3271	346142	cm5w	mt607	1970	1:24000
Spearfish-Shale outcrop complex, hilly	SO	5294	347145	cn77	mt611	1971	1:24000
Nevee-Spearfish silt loams, 6 to 20 percent slopes	P256D	796	2768094	2rvf5	sd019	1970	1:24000
Spearfish-Rock outcrop complex, 10 to 60 percent slopes	P480F	389	2668883	2rxvs	sd019	1970	1:24000
Spearfish, dry-Rock outcrop complex, 10 to 60 percent slopes	P482F	2368	2733158	2rxvt	sd047	1980	1:24000
Spearfish-Tilford extremely stony loams, dry, 6 to 25 percent slopes	P484E	641	2733159	2rxvw	sd047	1980	1:24000
Spearfish, cool-Rock outcrop complex, 9 to 50 percent slopes	Q0668F	507	2435693	2mrjr	sd047	1980	1:24000
Spearfish-Nevee silt loams, dry, 9 to 30 percent slopes	P476E	65	2768107	2rxsg	sd047	1980	1:24000
Nevee-Spearfish silt loams, 6 to 20 percent slopes	P256D	3741	2733259	2rvf5	sd081	2007	1:24000
Nevee-Spearfish silt loams, very stony, 10 to 40 percent slopes	P258E	1963	2733260	2rvf6	sd081	2007	1:24000
Spearfish-Nevee-Gullied land complex, 6 to 30 percent slopes	P478E	691	2733269	2rxvr	sd081	2007	1:24000
Rekop-Spearfish-Rock outcrop complex, moist, 15 to 60 percent slopes	P390F	297	2733267	2rwfh	sd081	2007	1:24000
Colnevee-Spearfish, cool silt loams, moist, 6 to 20 percent slopes	Q0906D	151	2426570	2mg1g	sd081	2007	1:24000
Spearfish-Rock outcrop complex, 10 to 60 percent slopes	P480F	25	2733270	2rxvs	sd081	2007	1:24000
Nevee-Spearfish silt loams, 6 to 20 percent slopes	P256D	3367	2733428	2rvf5	sd600	1974	1:24000
Spearfish-Rock outcrop complex, 10 to 60 percent slopes	P480F	773	2745636	2rxvs	sd600	1974	1:24000
Spearfish-Rock outcrop complex, 15 to 40 percent slopes	SlE	121	354350	cwqn	sd600	1974	1:24000
Nevee-Spearfish complex, 6 to 15 percent slopes	NaD	100	354332	cwq2	sd600	1974	1:24000
Spearfish-Nevee silt loams, dry, 9 to 30 percent slopes	P476E	2223	2745692	2rxsg	sd607	2011	1:24000
Spearfish, dry-Rock outcrop complex, 10 to 60 percent slopes	P482F	2185	2745693	2rxvt	sd607	2011	1:24000
Nevee-Spearfish silt loams, 6 to 20 percent slopes	P256D	1405	2768140	2rvf5	sd607	2011	1:24000
Spearfish, cool-Colnevee silt loams, 9 to 30 percent slopes	Q0667E	290	2586472	2ml24	sd607	2011	1:24000
Spearfish, cool-Rock outcrop complex, 9 to 50 percent slopes	Q0668F	63	2586407	2mrjr	sd607	2011	1:24000
Spearfish-Rock outcrop complex, 10 to 60 percent slopes	P480F	41	2784540	2rxvs	sd607	2011	1:24000
Spearfish-Rock outcrop complex, 10 to 60 percent slopes	P480F	9337	2745926	2rxvs	wy011	1978	1:24000
Spearfish-Nevee-Gullied land complex, 6 to 30 percent slopes	P478E	2920	2745737	2rxvr	wy011	1978	1:24000
Nevee-Spearfish-Barnum, channeled, flooded complex, 2 to 40 percent slopes	P260E	1697	2745736	2rvf9	wy011	1978	1:24000
Colnevee-Spearfish, cool silt loams, moist, 6 to 20 percent slopes	Q0906D	112	2513737	2mg1g	wy011	1978	1:24000
Nevee-Spearfish silt loams, 6 to 20 percent slopes	P256D	54	2745948	2rvf5	wy011	1978	1:24000
Nevee-Spearfish silt loams, very stony, 10 to 40 percent slopes	P258E	31	2745949	2rvf6	wy011	1978	1:24000
Spearfish-Sixmile-Rock outcrop complex, 5 to 45 percent slopes	226	1361	104581	3htl	wy031	1998	1:24000
Spearfish-Travessilla-Rock outcrop complex, 10 to 60 pe rcent slopes	64	44091	152111	538t	wy043	1976	1:24000
Neville-Spearfish-Rock outcrop association	55	35598	152101	538h	wy043	1976	1:24000
Vale-Tensleep association	72	34378	152120	5393	wy043	1976	1:24000
Rekop-Gystrum association	58	29274	152104	538l	wy043	1976	1:24000
Rock outcrop-Spearfish complex, 1 to 60 percent slopes	62	4626	152109	538r	wy043	1976	1:24000
Nevee-Spearfish-Barnum, channeled, flooded complex, 2 to 40 percent slopes	P260E	300	2745981	2rvf9	wy045	1984	1:24000
Colnevee-Spearfish, cool silt loams, moist, 6 to 20 percent slopes	Q0906D	51	2513738	2mg1g	wy045	1984	1:24000
Spearfish-Shale outcrop complex, steep	SPE	25019	350935	cs5h	wy619	1971	1:24000
Connerton-Spearfish association	CS	6358	350829	cs22	wy619	1971	1:24000
Vale-Tensleep association	72	14	816481	wdm3	wy619	1971	1:24000
Chilton Variant-Sunup-Spearfish Variant association, 5 to 60 percent slopes	12	1122	158023	59fj	wy650	1982	1:24000

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 (updated 2024-10-30).