Soil Data Explorer - SKUTUM

Official Series Description

Lab Data Summary

Aggregate lab data for the SKUTUM soil series. This aggregation is based on all pedons with a current taxon name of SKUTUM, 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 SKUTUM were used in the calculation. Source: KSSL snapshot (updated 2020-03-18). 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 SKUTUM 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 SKUTUM series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-02-21), parsed OSD records (updated 2023-10-06) and snapshot of SC database (updated 2023-10-02).

Select annual climate data summaries for the SKUTUM 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 2023-10-09).

Geomorphic description summaries for the SKUTUM 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 2023-10-04).

Competing Series

Soil series competing with SKUTUM share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2023-10-06) and snapshot of the SC database (updated 2023-10-02).

Select annual climate data summaries for the SKUTUM 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 2023-10-09).

Geomorphic description summaries for the SKUTUM 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 2023-10-04).

There are insufficient data to create the 3D terrace figure.

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

Soil series sharing subgroup-level classification with SKUTUM, 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 2023-10-02).

Block Diagrams

No block diagrams are available.

Map Units

Map units containing SKUTUM 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
Skutum fine sandy loam, 5 to 20 percent slopes	35	3040	498400	jqmf	co635	1979	1:24000
Mancos-Skisams-Skutum complex, 1 to 15 percent slopes	571	7341	507201	k0sb	co672	2003	1:24000
Primeaux-Goodski-Skutum families, complex, 20 to 50 percent slopes	840	17574	2733450	2slrm	id713		1:24000
Faim-Skutum family, very deep, complex, 10 to 45 percent slopes	820	5937	2733430	2slqt	id713		1:24000
Broad Canyon-Skutum family, high effective precipitation, complex, 15 to 45 percent slopes	850	1946	2733460	2slry	id713		1:24000
Northorn family-Pontuge-Skutum family, complex, 25 to 60 percent slopes	950	1329	2963862	2wv2k	id713		1:24000
Cavemountain-Bischoff familly-Skutum family, complex, 25 to 60 percent slopes	954	1141	2963860	2wv2m	id713		1:24000
Faim-Skutum family, very deep, complex, 10 to 45 percent slopes	820	81	3163431	2slqt	id716		1:24000
Primeaux-Goodski-Skutum families, complex, 20 to 50 percent slopes	840	46	2858646	2slrm	id758	1998	1:24000
Monaberg, very stony-Kimpton, stony-Skutum families, complex, 2 to 15	3150D	322	2724638	2sh7y	mt632		1:24000
Agassiz-Skutum-Lizzant complex, 25 to 70 percent slopes	DRG	19795	2810262	2trdn	ut013		1:24000
Skutum loam, 15 to 30 percent slopes	170	25350	508214	k1v0	ut613	1999	1:24000
Ant Flat-Henefer-Skutum complex, 8 to 30 percent slopes	105	22890	508145	k1rs	ut613	1999	1:24000
Skutum loam, 30 to 60 percent slopes	171	19131	508213	k1tz	ut613	1999	1:24000
Skutum-Uinta association, 15 to 30 percent slopes	172	13122	508212	k1ty	ut613	1999	1:24000
Skutum loam, 2 to 15 percent slopes	169	7810	508215	k1v1	ut613	1999	1:24000
Skutum-Uinta association, 30 to 60 percent slopes	173	7062	508217	k1v3	ut613	1999	1:24000
Sessions-Skutum loams, 2 to 15 percent slopes	167	4345	508209	k1tv	ut613	1999	1:24000
Sevier-Skutum association, 5 to 35 percent slopes	129	3887	504358	jxtm	ut636	1984	1:24000
Skutum fine sandy loam, 10 to 35 percent slopes	135	3050	504365	jxtv	ut636	1984	1:24000
Skutum very fine sandy loam, 1 to 6 percent slopes	134	1783	504364	jxtt	ut636	1984	1:24000
Whiteman-Skutum association, 10 to 70 percent slopes	159	1510	504391	jxvp	ut636	1984	1:24000
Skutum-Routt, extremely stony families, complex, 3 to 25 percent slopes	150	3718	791193	vk9c	ut651		1:24000
Faim-Skutum family, very deep, complex, 10 to 45 percent slopes	820	461	2858663	2slqt	wy623	1971	1:20000
Northorn family-Pontuge-Skutum family, complex, 25 to 60 percent slopes	950	14	3083487	2wv2k	wy623	1971	1:20000

Map of Series Extent

Approximate geographic distribution of the SKUTUM 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 2023-10-04).