Soil Data Explorer - THERESA

Official Series Description

Lab Data Summary

Aggregate lab data for the THERESA soil series. This aggregation is based on all pedons with a current taxon name of THERESA, 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 THERESA were used in the calculation. Source: KSSL snapshot (updated 2020-03-18). 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
95B	40A1669	68WI015003	Theresa	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.9650002,-88.0449982
95B	40A1670	68WI015004	Theresa	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	44.0083351,-88.1074982
95B	40A1560	S1953WI027021	Theresa	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.3330574,-88.8055573
95B	10N1062	S2009WI027001	Theresa	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.555925,-88.4105806
95B	10N1064	S2010WI131002	Theresa	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.4854778,-88.2718

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the THERESA 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 THERESA 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 THERESA 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 THERESA 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 THERESA 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 THERESA 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 THERESA 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.

Soil series sharing subgroup-level classification with THERESA, 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 THERESA 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
Theresa silt loam, 6 to 12 percent slopes, eroded	ThC2	11066	423654	2szd8	wi027	1976	1:15840
Theresa silt loam, 2 to 6 percent slopes	ThB	8696	423653	2szd9	wi027	1976	1:15840
Theresa silt loam, 12 to 20 percent slopes, eroded	ThD2	2601	423655	2wpyl	wi027	1976	1:15840
Theresa silt loam, 20 to 30 percent slopes, eroded	ThE2	1613	423656	2wpym	wi027	1976	1:15840
Theresa soils, 12 to 25 percent slopes, severely eroded	TrD3	576	423657	g6vc	wi027	1976	1:15840
Theresa silt loam, 2 to 6 percent slopes, eroded	ThB2	19123	425569	2szd7	wi039	1967	1:15840
Theresa silt loam, 2 to 6 percent slopes	ThB	10681	425568	2szd9	wi039	1967	1:15840
Theresa silt loam, 6 to 12 percent slopes, eroded	ThC2	8418	425571	2szd8	wi039	1967	1:15840
Theresa soils, 6 to 12 percent slopes, severely eroded	TrC3	1314	425574	g8v6	wi039	1967	1:15840
Theresa silt loam, 6 to 12 percent slopes	ThC	1190	425570	2wpyj	wi039	1967	1:15840
Theresa silt loam, 12 to 20 percent slopes, eroded	ThD2	824	425573	2wpyl	wi039	1967	1:15840
Theresa-Casco silt loams, 6 to 12 percent slopes, eroded	TsC2	588	425577	2wpyp	wi039	1967	1:15840
Theresa silt loam, 12 to 20 percent slopes	ThD	505	425572	2wpyk	wi039	1967	1:15840
Theresa silt loam, 0 to 2 percent slopes	ThA	423	425567	2szd6	wi039	1967	1:15840
Theresa-Casco silt loams, 2 to 6 percent slopes, eroded	TsB2	418	425576	2wpyn	wi039	1967	1:15840
Theresa-Casco silt loams, 12 to 20 percent slopes, eroded	TsD2	379	425578	2wpyq	wi039	1967	1:15840
Theresa soils, 12 to 20 percent slopes, severely eroded	TrD3	232	425575	g8v7	wi039	1967	1:15840
Theresa-Casco silt loams, 20 to 30 percent slopes, eroded	TsE2	189	425579	2xzp9	wi039	1967	1:15840
Theresa silt loam, 2 to 6 percent slopes	ThB	7412	423833	2szd9	wi055	1976	1:15840
Theresa silt loam, 6 to 12 percent slopes, eroded	ThC2	3068	423834	2szd8	wi055	1976	1:15840
Theresa silt loam, 2 to 6 percent slopes	ThB	981	426023	2szd9	wi089	1967	1:15840
Theresa silt loam, 2 to 6 percent slopes	ThB	12909	423936	2szd9	wi117	1974	1:15840
Theresa silt loam, 0 to 2 percent slopes	ThA	2448	423935	2szd6	wi117	1974	1:15840
Theresa silt loam, 6 to 12 percent slopes, eroded	ThC2	604	423937	2szd8	wi117	1974	1:15840
Theresa silt loam, 2 to 6 percent slopes	ThB	16560	425786	2szd9	wi131	1967	1:15840
Theresa silt loam, 2 to 6 percent slopes, eroded	ThB2	13045	425787	2szd7	wi131	1967	1:15840
Theresa silt loam, 6 to 12 percent slopes, eroded	ThC2	3159	425788	2szd8	wi131	1967	1:15840
Theresa silt loam, 0 to 2 percent slopes	ThA	1260	425785	2szd6	wi131	1967	1:15840
Theresa silt loam, 2 to 6 percent slopes	ThB	5933	422902	2szd9	wi600	1976	1:15840
Theresa silt loam, 2 to 6 percent slopes	ThB	258	424113	2szd9	wi601	1967	1:15840
Theresa silt loam, 2 to 6 percent slopes	ThB	10606	425929	2szd9	wi602	1967	1:15840
Theresa silt loam, 2 to 6 percent slopes, eroded	ThB2	3074	425930	2szd7	wi602	1967	1:15840
Theresa silt loam, 6 to 12 percent slopes, eroded	ThC2	1460	425931	2szd8	wi602	1967	1:15840
Theresa silt loam, 0 to 2 percent slopes	ThA	1190	425928	2szd6	wi602	1967	1:15840

Map of Series Extent

Approximate geographic distribution of the THERESA 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).