Soil Data Explorer - OKATON

Official Series Description

Lab Data Summary

Aggregate lab data for the OKATON soil series. This aggregation is based on all pedons with a current taxon name of OKATON, 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 OKATON were used in the calculation. Source: KSSL snapshot (updated 2020-03-13). Methods used to assemble the KSSL snapshot used by SoilWeb / SDE

Pedons used in the lab summary:

MLRA	Lab ID	Pedon ID	Taxonname	CI	NSSL / NASIS Reports	Link To SoilWeb GMap
63B	78P0362	78SD053009	Okaton	8	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.3944435,-99.1875
63B	83P0560	83SD085003	Okaton	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.5291672,-99.390831

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the OKATON 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 OKATON series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-02-21), parsed OSD records (updated 2023-10-02) and snapshot of SC database (updated 2023-10-02).

Select annual climate data summaries for the OKATON 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 OKATON 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).

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

Competing Series

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

Select annual climate data summaries for the OKATON 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 OKATON 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 mountains figure.

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 OKATON, 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

Click a link below to display the diagram. Note that these diagrams may be from multiple survey areas.

1. SD-2012-03-15-39 | Haakon County - 1998

   Typical pattern of soils and parent material in the Nimbro, Samsil-Pierre, and Kirley-Lakoma-Vivian associations (Soil Survey of Haakon County, SD; 1998).

2. SD-2012-03-15-61 | Jones County - 1999

   Typical pattern of soils and parent material in the Okaton-Lakoma association (Soil Survey of Jones County, SD; 1999).

Map Units

Map units containing OKATON 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
Okaton silty clay, 15 to 40 percent slopes	OeF	7388	355055	2ynv6	sd023	1980	1:20000
Okaton-Lakoma silty clays, 15 to 40 percent slopes	ObE	52775	355270	2tj7s	sd053	1982	1:20000
Lakoma-Okaton silty clays, 6 to 15 percent slopes	LoD	4877	355255	2tj7q	sd053	1982	1:20000
Okaton-Mariaville complex, 15 to 50 percent slopes	OcF	3092	355271	cxpc	sd053	1982	1:20000
Okaton-Lakoma silty clays, 15 to 40 percent slopes	ObE	63995	354122	2tj7s	sd055	1992	1:24000
Okaton-Lakoma silty clays, 15 to 40 percent slopes	ObE	75569	353657	2tj7s	sd075	1991	1:24000
Okaton-Wendte-Bullcreek complex, 0 to 45 percent slopes	OkE	21701	353658	cw0b	sd075	1991	1:24000
Okaton silty clay, 6 to 40 percent slopes	OaF	3287	353656	2ynty	sd075	1991	1:24000
Lakoma-Okaton silty clays, 6 to 15 percent slopes	LbD	30051	355578	2tj7q	sd085	1984	1:20000
Okaton-Lakoma silty clays, 15 to 40 percent slopes	OhE	7521	2738961	2tj7s	sd085	1984	1:20000
Okaton-Lakoma silty clays, 15 to 40 percent slopes	ObE	124133	2738962	2tj7s	sd095	1971	1:20000
Lakoma-Okaton silty clays, 6 to 15 percent slopes	LdD	55386	2738955	2tj7q	sd095	1971	1:20000
Okaton silty clay, 6 to 40 percent slopes	OkF	2359	355354	2ynty	sd107	1983	1:20000
Lakoma-Okaton silty clays, 6 to 15 percent slopes	LkD	26233	353481	2tj7q	sd117	1977	1:24000
Okaton-Lakoma silty clays, 15 to 40 percent slopes	OkE	20355	353495	2tj7s	sd117	1977	1:24000
Okaton-Wendte-Bullcreek complex, 0 to 45 percent slopes	OfE	461	1015957	1335t	sd117	1977	1:24000
Lakoma-Okaton silty clays, 6 to 15 percent slopes	LoD	44364	354406	2tj7q	sd123	1975	1:20000
Okaton-Lakoma silty clays, 15 to 40 percent slopes	OBE	21631	354419	2tj7s	sd123	1975	1:20000
Boyd-Okaton association, 9 to 25 percent slopes	BOD	20184	354374	cwrf	sd123	1975	1:20000
Okaton-Rock outcrop complex, 25 to 60 percent slopes	OcF	10327	354420	cwsx	sd123	1975	1:20000
Okaton association, 25 to 40 percent slopes	OAF	5882	354418	cwsv	sd123	1975	1:20000
Okaton bouldery silty clay, 15 to 40 percent slopes	OeF	3831	355528	cxyn	sd603	1983	1:20000

Map of Series Extent

Approximate geographic distribution of the OKATON 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).