Soil Data Explorer - MACOMB

Official Series Description

Lab Data Summary

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

Soil series sharing subgroup-level classification with MACOMB, 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 MACOMB 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
Macomb sandy loam, 2 to 6 percent slopes	McB	1	2441812	2myx4	mi037	1974	1:15840
Macomb sandy loam, 2 to 6 percent slopes	MbB	2	2399245	2ljm0	mi049	1967	1:20000
Macomb sandy loam, 2 to 6 percent slopes	MbB	3	2437786	2mtq8	mi065	1977	1:15840
Macomb loam, 0 to 2 percent slopes	McA	2	2437782	2mtq4	mi065	1977	1:15840
Macomb loam, 0 to 2 percent slopes	MaA	693	188033	69nl	mi067	1965	1:15840
Macomb loam, 2 to 6 percent slopes	MaB	508	188034	69nm	mi067	1965	1:15840
Macomb sandy loam, 2 to 6 percent slopes	MaB	1046	192055	6fvb	mi087	1966	1:15840
Macomb sandy loam, 0 to 2 percent slopes	MaA	887	192054	6fv9	mi087	1966	1:15840
Brady and Macomb loams, 0 to 3 percent slopes	BkA	24029	188442	6b2s	mi091	1957	1:20000
Macomb sandy clay loam and Hoytville clay loam, 0 to 3 percent slopes	MbA	3297	188512	6b51	mi091	1957	1:20000
Macomb fine sandy loam, 0 to 3 percent slopes	MaA	2049	188511	6b50	mi091	1957	1:20000
Brady and Macomb sandy loams, 0 to 3 percent slopes	BmA	829	188443	6b2t	mi091	1957	1:20000
Macomb fine sandy loam, 0 to 3 percent slopes	113A	2	2509202	6b50	mi115	1980	1:15840
Macomb loam, 0 to 2 percent slopes	115A	727	2422521	2m9tv	mi145	1991	1:15840
Macomb loam, 0 to 2 percent slopes	MaA	7507	187819	69fp	mi155	1967	1:12000
Macomb sandy loam, 2 to 6 percent slopes	MbB	4559	187820	69fq	mi155	1967	1:12000
Macomb loam, 0 to 4 percent slopes	MaA	999	191642	6ff0	mi161	1974	1:20000

Map of Series Extent

Approximate geographic distribution of the MACOMB 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).