Soil Data Explorer - CROMACK

Official Series Description

Lab Data Summary

Aggregate lab data for the CROMACK soil series. This aggregation is based on all pedons with a current taxon name of CROMACK, 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 CROMACK 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 CROMACK 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 CROMACK 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 CROMACK 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 CROMACK 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 CROMACK 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 CROMACK 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 CROMACK 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 CROMACK, 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 CROMACK 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
Echeta-Cromack clay loams, 6 to 15 percent slopes	138	46	1387743	1hl1x	mt643	1967	1:20000
Cromack-Samsil clay loams, 3 to 15 percent slopes	267	12	1387755	1hl29	mt643	1967	1:20000
Samsil-Cromack complex, 10 to 30 percent slopes	P438E	4	2768098	2rxv1	sd019	1970	1:24000
Samsil-Cromack complex, 10 to 30 percent slopes	P438E	52834	2745799	2rxv1	wy011	1978	1:24000
Cromack-Echeta-Leiter complex, 6 to 10 percent slopes	P102C	19311	2547452	2qt0v	wy011	1978	1:24000
Cromack clay loam, moist, 2 to 10 percent slopes	P136C	11287	2745732	2rvdc	wy011	1978	1:24000
Cromack clay loam, 2 to 10 percent slopes	P100C	6539	2745787	2rvd6	wy011	1978	1:24000
Samsil-Cromack complex, 2 to 10 percent slopes	P438C	5940	2745798	2rxv0	wy011	1978	1:24000
Cromack-Echeta-Leiter complex, 10 to 30 percent slopes	P102E	3910	2547454	2qt0w	wy011	1978	1:24000
Winler-Cromack clay loams, 2 to 10 percent slopes	P550C	1534	2745942	2s03q	wy011	1978	1:24000
Cromack-Samsil complex, 3 to 10 percent slopes	P104C	550	2745788	2qt2d	wy011	1978	1:24000
Leiter-Cromack clay loams, 2 to 10 percent slopes	P204C	31	2768031	2rvd0	wy011	1978	1:24000
Leiter-Cromack clay loams, 2 to 10 percent slopes	P204C	956	2746008	2rvd0	wy045	1984	1:24000
Samsil-Cromack complex, 10 to 30 percent slopes	P438E	884	2746012	2rxv1	wy045	1984	1:24000
Cromack-Echeta-Leiter complex, 6 to 10 percent slopes	P102C	582	2547453	2qt0v	wy045	1984	1:24000
Cromack clay loam, moist, 2 to 10 percent slopes	P136C	13	2768213	2rvdc	wy045	1984	1:24000
Samsil-Cromack complex, 2 to 10 percent slopes	P438C	9	2768206	2rxv0	wy045	1984	1:24000
Cromack-Fairburn-Ucross complex, 3 to 20 percent slopes	207	5913	349905	cr38	wy605	1995	1:24000
Echeta-Cromack clay loams, 6 to 15 percent slopes	138	2710	349823	cr0m	wy605	1995	1:24000
Leiter-Cromack clay loams, 3 to 15 percent slopes	176	1839	349868	cr22	wy605	1995	1:24000
Cromack-Samsil clay loams, 3 to 15 percent slopes	267	10151	817627	wft2	wy705	2003	1:24000
Leiter-Cromack clay loams, 3 to 15 percent slopes	176	4062	817556	wfqs	wy705	2003	1:24000
Echeta-Cromack clay loams, 6 to 15 percent slopes	138	3548	817529	wfpx	wy705	2003	1:24000
Cromack-Fairburn-Ucross complex, 3 to 20 percent slopes	207	82	817578	wfrh	wy705	2003	1:24000

Map of Series Extent

Approximate geographic distribution of the CROMACK 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).