Soil Data Explorer - ASSUMPTION

Official Series Description

Lab Data Summary

Aggregate lab data for the ASSUMPTION soil series. This aggregation is based on all pedons with a current taxon name of ASSUMPTION, 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 ASSUMPTION 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
108B	88P0081	1987IL109065	Assumption	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.5091628,-90.8477974
108B	12N7648	S2011IL021281	Assumption	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.6609601,-89.2850644

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the ASSUMPTION 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 ASSUMPTION 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 ASSUMPTION 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 ASSUMPTION 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 ASSUMPTION 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 ASSUMPTION 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 ASSUMPTION 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 ASSUMPTION, 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

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

1. IL-2010-09-01-53 | McDonough County - 1997

   Typical pattern of soils and parent material in the Ipava-Tama association (Soil Survey of McDonough County, Illinois; 1997).

2. IL-2011-08-03-09 | Christian County - 1994

   Typical pattern of soils and parent material in the Ipava-Sable-Tama association (Soil Survey of Christian County, Illinois; 1994).

3. IL-2011-08-04-26 | Henry County - 1984

   Pattern of soils in the Sawmill-Radford association (Soil Survey of Henry County, Illinois; 1984).

4. IL-2011-08-04-41 | Knox County - 1986

   Typical pattern of soils and parent material in the Tama-Ipava association (Soil Survey of Knox County, Illinois; 1986).

5. IL-2011-08-04-70 | Mercer County - 1991

   Typical pattern of soils and parent material in the Marseilles-Assumption-Tama association (Soil Survey of Mercer County, Illinois; 1991).

Map Units

Map units containing ASSUMPTION 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
Assumption silty clay loam, 10 to 18 percent slopes, severely eroded	259D3	876	1862728	2rmnh	il011	2007	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	3501	261697	2rmnd	il021	1999	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	512	615648	2rmnd	il057	1997	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	25	211763	2rmnd	il061	1968	1:15840
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	5105	175166	2rmnd	il067	1993	1:15840
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	395	1481066	2rmnd	il071	2005	1:12000
Assumption silt loam, 2 to 5 percent slopes	259B	2764	244676	2rmnb	il073	2001	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	2291	244677	2rmnd	il073	2001	1:12000
Assumption silt loam, 10 to 18 percent slopes, eroded	259D2	1321	244678	2rmng	il073	2001	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	615	728490	2rmnd	il083	2002	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	4069	680877	2rmnd	il095	2002	1:12000
Assumption silt loam, 10 to 18 percent slopes, eroded	259D2	2940	680878	2rmng	il095	2002	1:12000
Assumption silty clay loam, 10 to 18 percent slopes, severely eroded	259D3	980	680879	2rmnh	il095	2002	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	389	926881	2rmnd	il103	2004	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	1764	634196	2rmnd	il109	2002	1:12000
Assumption silt loam, 10 to 18 percent slopes, eroded	259D2	289	634197	2rmng	il109	2002	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	2572	199186	2rmnd	il117	1999	1:12000
Assumption silt loam, 2 to 5 percent slopes	259B	2048	199184	2rmnb	il117	1999	1:12000
Assumption silt loam, 2 to 5 percent slopes, eroded	259B2	1496	199185	2rmnc	il117	1999	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	1563	244971	2rmnd	il131	2000	1:12000
Assumption silt loam, 10 to 18 percent slopes, eroded	259D2	702	244972	2rmng	il131	2000	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	1610	1721397	2rmnd	il135	2007	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	3129	1672133	2rmnd	il137	1984	1:15840
Assumption silt loam, 10 to 18 percent slopes, eroded	259D2	1173	1672134	2rmng	il137	1984	1:15840
Assumption silt loam, 2 to 5 percent slopes	259B	10624	208578	2rmnb	il141	2005	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	4103	208579	2rmnd	il141	2005	1:12000
Assumption silt loam, 0 to 2 percent slopes	259A	1370	208551	2ww9r	il141	2005	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	627	208975	2rmnd	il143	1986	1:15840
Assumption silt loam, 10 to 18 percent slopes, eroded	259D2	325	208976	2rmng	il143	1986	1:15840
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	6194	199314	2rmnd	il167	1999	1:12000
Assumption silt loam, 10 to 18 percent slopes, eroded	259D2	5797	199315	2rmng	il167	1999	1:12000
Assumption silt loam, 10 to 18 percent slopes, eroded	259D2	83	2542073	2rmng	il171	1984	1:12000
Assumption silt loam, 10 to 18 percent slopes, eroded	259D2	934	179081	2rmng	il175	1992	1:15840
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	577	179080	2rmnd	il175	1992	1:15840
Assumption silty clay loam, 10 to 18 percent slopes, severely eroded	259D3	420	179082	2rmnh	il175	1992	1:15840
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	1100	1592073	2rmnd	il177	2006	1:12000
Assumption silt loam, 10 to 18 percent slopes, eroded	259D2	4809	244880	2rmng	il187	2002	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	2795	244879	2rmnd	il187	2002	1:12000
Assumption silt loam, 2 to 5 percent slopes, eroded	259B2	1034	173998	2rmnc	il201	1997	1:12000
Assumption silt loam, 5 to 10 percent slopes, eroded	259C2	123	173999	2rmnd	il201	1997	1:12000

Map of Series Extent

Approximate geographic distribution of the ASSUMPTION 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).