Soil Data Explorer - STRAT

Official Series Description

Lab Data Summary

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

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

Competing Series

Soil series competing with STRAT 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 STRAT 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 STRAT 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 flats position figure.

Soil series sharing subgroup-level classification with STRAT, 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 STRAT 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
Strat-Tubspring complex, 0 to 8 percent slopes	371	19785	700438	rhvs	wa017	1998	1:12000
Tubspring-DelRio-Strat complex, 0 to 8 percent slopes	446	14911	700440	rhvv	wa017	1998	1:12000
Strat-Tubspring-Nemire complex, 0 to 30 percent slopes	374	7862	704111	rmp8	wa017	1998	1:12000
Strat-Tubspring complex, 8 to 30 percent slopes	372	6320	700539	rhz1	wa017	1998	1:12000
Strat-Tubspring-DelRio complex, 0 to 30 percent slopes	373	5855	704114	rmpc	wa017	1998	1:12000
Strat very cobbly sandy loam, 0 to 10 percent slopes	364	4180	700264	rhp5	wa017	1998	1:12000
Strat-Tubspring-Skaha complex, 0 to 15 percent slopes	375	3692	704112	rmp9	wa017	1998	1:12000
Strat very cobbly sandy loam, 10 to 30 percent slopes	365	3198	700537	rhyz	wa017	1998	1:12000
Heytou-Timentwa-Strat complex, 20 to 70 percent slopes	200	2264	704122	rmpm	wa017	1998	1:12000
Strat very cobbly sandy loam, 30 to 65 percent slopes	366	1626	700583	rj0g	wa017	1998	1:12000
Strat very stony silt loam, 0 to 8 percent slopes	370	874	700582	rj0f	wa017	1998	1:12000
Strat silt loam, 0 to 3 percent slopes	369	417	700581	rj0d	wa017	1998	1:12000
Strat cobbly loam, 0 to 15 percent slopes	367	272	699522	rgx7	wa017	1998	1:12000
Strat stony loam, 0 to 25 percent slopes	368	16	699525	rgxb	wa017	1998	1:12000
Strat stony loam, 0 to 25 percent slopes	148	29713	68744	29jk	wa025	1979	1:24000
Strat gravelly loam, 0 to 15 percent slopes	146	13732	68742	29jh	wa025	1979	1:24000
Strat cobbly loam, 0 to 15 percent slopes	147	8027	68743	29jj	wa025	1979	1:24000
Strat-Stratford complex, 0 to 15 percent slopes	149	1658	68745	29jl	wa025	1979	1:24000
Strat very cobbly silt loam, 3 to 25 percent slopes	76	30457	68676	29gc	wa043	1978	1:24000
Strat gravelly fine sandy loam, 0 to 10 percent slopes	463	802	70615	2cgx	wa648	1987	1:24000
Strat gravelly fine sandy loam, 0 to 10 percent slopes	508	5	1899909	21s0d	wa649	2008	1:24000

Map of Series Extent

Approximate geographic distribution of the STRAT 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).