Soil Data Explorer - WILKINS

Official Series Description

Lab Data Summary

Aggregate lab data for the WILKINS soil series. This aggregation is based on all pedons with a current taxon name of WILKINS, 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 WILKINS 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 WILKINS 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 WILKINS 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 WILKINS 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 WILKINS 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 flats position figure.

Competing Series

Soil series competing with WILKINS 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 WILKINS 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 WILKINS 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 WILKINS, 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. ID-2010-08-30-16 | Lewis and Nez Perce Counties - 2004

   Landscape relationships among the Taney, Setters, and Wilkins soils in detailed soil map units 131, 132, and 152 (Soil Survey of Lewis and Nez Perce Counties, Idaho; 2004).

Map Units

Map units containing WILKINS 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
Wilkins silt loam, 0 to 5 percent slopes	152	9088	79621	2nvf	id611	1994	1:24000
Wilkins silt loam, moist, 0 to 5 percent slopes	152j	8	679206	qsrw	id611	1994	1:24000
Sly-Wilkins complex, 3 to 15 percent slopes	216	1755	776625	v24f	id612	2003	1:24000
Wilkins silt loam, 0 to 5 percent slopes	245	1505	777417	v2yz	id612	2003	1:24000
Wilkins silt loam	130	4926	153982	5575	id617	1976	1:24000
Wilkins ashy silt loam, 0 to 5 percent slopes	5976EO	1	3120243	1nz0w	or607	2018	1:24000
Wilkins silt loam, 1 to 5 percent slopes	70B	628	64017	24m2	or625	1979	1:20000
Wilkins-Bandarrow-Bullroar complex, 0 to 5 percent slopes	0036EW	1269	3122496	1t1tg	or626	2018	1:24000
Wilkins ashy silt loam, 0 to 5 percent slopes	5976EO	65	2437430	1nz0w	or631	2018	1:24000
Wilkins silt loam, 0 to 5 percent slopes	354	4321	84752	2v5y	or670	1999	1:24000
Howmeadows-Wilkins complex, 0 to 3 percent slopes	133	1160	84505	2txz	or670	1999	1:24000
Wilkins-Feaginranch complex, 0 to 2 percent slopes	355	552	84754	2v60	or670	1999	1:24000

Map of Series Extent

Approximate geographic distribution of the WILKINS 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).