Soil Data Explorer - MALCOLM

Official Series Description

Lab Data Summary

Aggregate lab data for the MALCOLM soil series. This aggregation is based on all pedons with a current taxon name of MALCOLM, 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 MALCOLM 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 MALCOLM 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 MALCOLM series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-10-24), parsed OSD records (updated 2024-10-23) and snapshot of SC database (updated 2024-10-23).

Select annual climate data summaries for the MALCOLM 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 2024-10-23).

Geomorphic description summaries for the MALCOLM 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 2024-10-23).

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.

Competing Series

Soil series competing with MALCOLM share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2024-10-23) and snapshot of the SC database (updated 2024-10-23).

Select annual climate data summaries for the MALCOLM 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 2024-10-23).

Geomorphic description summaries for the MALCOLM 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 2024-10-23).

There are insufficient data to create the 3D mountains figure.

Soil series sharing subgroup-level classification with MALCOLM, 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 2024-10-23).

Block Diagrams

Click a link below to display the diagram. Note that these diagrams may be from multiple survey areas.

1. NE-2012-02-13-90 | Saunders County - January 1965

   Soils in the Burchard-Shelby association (Soil Survey of Saunders County, Nebraska; January 1965).

Map Units

Map units containing MALCOLM 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
Malcolm silt loam, 6 to 11 percent slopes, eroded	7258	4545	1691098	30tsb	ne067	2000	1:12000
Malcolm silt loam, 6 to 11 percent slopes, eroded	7297	245	1691822	30tsb	ne095	1970	1:20000
Malcolm silt loam, 11 to 25 percent slopes	7299	1363	1691581	30tsc	ne097	1984	1:20000
Malcolm silt loam, 6 to 11 percent slopes	7296	762	1691580	30ts9	ne097	1984	1:20000
Malcolm silt loam, 6 to 11 percent slopes	7296	879	1691365	30ts9	ne109	1977	1:20000
Malcolm silt loam, 11 to 25 percent slopes	7299	380	1691366	30tsc	ne109	1977	1:20000
Malcolm silt loam, 6 to 11 percent slopes, eroded	7297	58	2219241	30tsb	ne109	1977	1:20000
Malcolm silt loam, 6 to 11 percent slopes, eroded	7297	322	1691668	30tsb	ne127	1983	1:20000
Malcolm silt loam, 6 to 11 percent slopes	7296	975	1691533	30ts9	ne131	1979	1:20000
Malcolm silt loam, 6 to 11 percent slopes, eroded	7297	605	1691534	30tsb	ne131	1979	1:20000
Malcolm silt loam, 11 to 25 percent slopes	7299	416	1691535	30tsc	ne131	1979	1:20000
Malcolm complex, 11 to 25 percent slopes	7295	1564	1691621	1ts8f	ne133	1969	1:15840
Malcolm complex, 6 to 11 percent slopes	7298	1019	1691620	1ts8d	ne133	1969	1:15840
Malcolm silt loam, 6 to 11 percent slopes	7296	69	2219401	30ts9	ne133	1969	1:15840
Malcolm silt loam, 6 to 11 percent slopes, eroded	7297	191	1691430	30tsb	ne155	1995	1:12000

Map of Series Extent

Approximate geographic distribution of the MALCOLM 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 2024-10-30).