Soil Data Explorer - KEOMAH

Official Series Description

Lab Data Summary

Aggregate lab data for the KEOMAH soil series. This aggregation is based on all pedons with a current taxon name of KEOMAH, 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 KEOMAH were used in the calculation. Source: KSSL snapshot (updated 2020-03-13). 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
108A	84IL183130	1984IL183130	Keomah	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.097825,-87.7010889
108A	84IL183142	1984IL183142	Keomah	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.1399111,-87.5733417
108B	40A1516	1960IL021002	Keomah	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.5847206,-89.3708344
108B	77IL073014	1977IL073014	Keomah	1	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	41.1546634,-90.4291151
108B	81P0211	1978IL137002	Keomah	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.5378151,-89.9739838
108C	04N0285	S2003IA183002	Keomah	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	41.3163071,-91.8953018
115C	58IL113001	1958IL113001	Keomah	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.5501121,-89.2090906
115C	58IL203001	1958IL203001	Keomah	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.8113092,-89.4399568
115C	81IL009066	1981IL009066	Keomah	1	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.9261596,-90.7055388
n/a	77IL095065	1977IL095065	Keomah	1	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	n/a

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the KEOMAH 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 KEOMAH 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 KEOMAH 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 KEOMAH 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 KEOMAH 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 KEOMAH 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).

There are insufficient data to create the annual climate figure.

Geomorphic description summaries for the KEOMAH 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 2D hillslope position figure.

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

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 KEOMAH, 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. IA-2010-09-02-16 | Jefferson County - 1999

   Typical pattern of soils and parent material in the Clinton-Lindley-Ashgrove association (Soil Survey of Jefferson County, Iowa; 1999).

2. IA-2011-05-31-57 | Jefferson County - 1999

   Typical pattern of soils and parent material in the Clinton-Lindley-Ashgrove association (Soil Survey of Jefferson County, Iowa; 1999).

3. IA-2011-06-01-07 | Louisa County - 1980

   Pattern of soils and parent material in the Clinton-Lindley association (Soil Survey of Louisa County, Iowa; 1980).

4. IL-2010-09-01-18 | Fulton County - 2003

   Typical pattern of soils and parent material in the Rozetta-Keomah-Clarksdale association (Soil Survey of Fulton County, Illinois; 2003).

5. IL-2010-09-01-23 | Fulton County - 2003

   Typical pattern of soils and parent material in the Rozetta-Keomah-Camden association (Soil Survey of Fulton County, Illinois; 2003).

6. IL-2010-09-01-27 | Hancock County - 2001

   Typical pattern of soils and parent material in the Rozetta-Hickory-Clarksdale association (Soil Survey of Hancock County, Illinois; 2001).

7. IL-2010-09-01-44 | Marshall County - 2002

   Typical pattern of soils and parent material in the Rozetta-Keomah association (Soil Survey of Marshall County, Illinois; 2002).

8. IL-2010-09-01-54 | McDonough County - 1997

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

9. IL-2010-09-01-65 | Schuyler County - 2003

   Typical pattern of soils and underlying material in the Keomah-Rozetta-Fishhook association (Soil Survey of Schuyler County, Illinois; 2003).

10. IL-2010-09-01-67 | Schuyler County - 2003

    Typical pattern of soils and underlying material in the Fayette-Sylvan association (Soil Survey of Schuyler County, Illinois; 2003).

11. IL-2010-09-01-83 | Woodford County - 1999

    Typical pattern of soils and parent material in the Keomah-Rozetta association (Soil Survey of Woodford County, Illinois; 1999).

12. IL-2010-09-24-07 | Christian County -

    Typical pattern of soils and underlying material in the Rozetta-Hickory-Keomah association (Soil Survey of Christian County, Illinois).

13. IL-2011-06-01-02 | Brown County - 1988

    Typical pattern of soils and parent material in the Keomah-Rozetta association (Soil Survey of Brown County, Illinois; 1988).

14. IL-2011-06-01-06 | Brown County - 1988

    Typical cross section showing the relationship of parent material to soils in Brown County (Soil Survey of Brown County, Illinois; 1988).

15. IL-2011-08-03-15 | Christian County - 1994

    Typical pattern of soils and parent material in the Rozetta-Hickory-Keomah association (Soil Survey of Christian County, Illinois; 1994).

16. IL-2011-08-04-05 | De Witt County - 1991

    Typical pattern of soils and parent material in the Birkbeck-Russell-Keomah association (Soil Survey of De Witt County, Illinois; 1991).

17. IL-2011-08-04-81 | Peoria County - 1992

    Typical pattern of soils and parent material in the Rozetta-Keomah-Sylvan and Hickory-Strawn-Marseilles associations (Soil Survey of Peoria County, Illinois; 1992).

Map Units

Map units containing KEOMAH 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
Keomah silt loam, 1 to 3 percent slopes	180	7282	405223	flnq	ia057	1980	1:15840
Keomah silt loam benches 2 to 5 percent slopes	1180B	846	406799	fn9k	ia087	1982	1:15840
Keomah silt loam, 2 to 5 percent slopes	180B	463	406824	fnbc	ia087	1982	1:15840
Keomah silt loam, 0 to 2 percent slopes	180	336	406823	fnbb	ia087	1982	1:15840
Keomah silt loam, 0 to 2 percent slopes	180	102	452953	h6bd	ia095	2005	1:12000
Keomah silt loam, 2 to 5 percent slopes	180B	410	407750	fp97	ia101	1992	1:15840
Keomah silt loam, 0 to 2 percent slopes	180	175	407749	fp96	ia101	1992	1:15840
Keomah silt loam, 0 to 2 percent slopes	180	311	447045	h05t	ia107	1998	1:12000
Keomah silt loam, 2 to 5 percent slopes	180B	1342	408443	fq0l	ia111	1976	1:15840
Keomah silt loam, benches, 2 to 5 percent slopes	1180B	1050	408417	fpzr	ia111	1976	1:15840
Keomah silt loam, benches, 0 to 2 percent slopes	1180	843	408416	fpzq	ia111	1976	1:15840
Keomah silt loam, 0 to 2 percent slopes	180	682	408442	fq0k	ia111	1976	1:15840
Keomah silt loam, bedrock substratum, 1 to 3 percent slopes	1181	441	408418	fpzs	ia111	1976	1:15840
Keomah silt loam, 0 to 2 percent slopes	180	1831	408746	fqbc	ia115	1984	1:15840
Keomah silt loam, 0 to 2 percent slopes	180	943	412015	ftqt	ia183	1983	1:15840
Keomah silt loam, benches, 1 to 3 percent slopes	1180	390	411999	ftq9	ia183	1983	1:15840
Keomah silt loam, 2 to 5 percent slopes	17B	20277	2378576	2tjnp	il001	1997	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	11046	2378575	2tjnn	il001	1997	1:12000
Keomah silt loam, 2 to 5 percent slopes	17B	8701	172947	2tjnp	il009	1984	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	8465	172946	2tjnn	il009	1984	1:12000
Keomah silt loam, terrace, 2 to 5 percent slopes	9017B	104	2604204	2rbfz	il009	1984	1:12000
Keomah silt loam, terrace, 0 to 2 percent slopes	9017A	22	2604203	2rbfy	il009	1984	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	2985	709150	2tjnn	il017	2003	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	4833	261743	2tjnn	il021	1999	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	3343	1477711	2tjnn	il039	2005	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	19921	615622	2tjnn	il057	1997	1:12000
Keomah silt loam, terrace, 0 to 2 percent slopes	9017A	509	615710	nnpm	il057	1997	1:12000
Keomah silt loam, 2 to 5 percent slopes	17B	110	615623	2tjnp	il057	1997	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	13659	211727	2tjnn	il061	1968	1:15840
Keomah silt loam, 2 to 5 percent slopes	17B	6135	211728	2tjnp	il061	1968	1:15840
Keomah silt loam, 2 to 5 percent slopes, eroded	17B2	10326	175161	2tjnq	il067	1993	1:15840
Keomah silt loam, 0 to 2 percent slopes	17A	7093	175159	2tjnn	il067	1993	1:15840
Keomah silt loam, 2 to 5 percent slopes	17B	868	175160	2tjnp	il067	1993	1:15840
Keomah silt loam, terrace, 2 to 5 percent slopes	9017B	306	2604113	2r79z	il067	1993	1:15840
Keomah silt loam, terrace, 0 to 2 percent slopes	9017A	89	2604112	2r79y	il067	1993	1:15840
Keomah silt loam, 0 to 2 percent slopes	17A	443	244622	2tjnn	il073	2001	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	988	728178	2tjnn	il083	2002	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	5223	680858	2tjnn	il095	2002	1:12000
Keomah silt loam, terrace, 0 to 2 percent slopes	9017A	119	680932	qvkk	il095	2002	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	4931	1595696	2tjnn	il107	2006	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	12638	634118	2tjnn	il109	2002	1:12000
Keomah silt loam, 2 to 5 percent slopes	17B	6577	634215	2tjnp	il109	2002	1:12000
Keomah silt loam, terrace, 2 to 5 percent slopes	9017B	434	634069	p8sv	il109	2002	1:12000
Keomah silt loam, terrace, 0 to 2 percent slopes	9017A	298	634068	p8st	il109	2002	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	1939	199052	2tjnn	il113	2000	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	24975	199225	2tjnn	il117	1999	1:12000
Keomah silt loam, terrace, 0 to 2 percent slopes	9017A	88	199243	6pb6	il117	1999	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	2797	182095	2tjnn	il123	1997	1:15840
Keomah silt loam, 2 to 5 percent slopes, eroded	17B2	326	182096	2tjnq	il123	1997	1:15840
Keomah silt loam, 0 to 2 percent slopes	17A	2322	638837	2tjnn	il129	2005	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	1041	244942	2tjnn	il131	2000	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	7738	1672118	2tjnn	il137	1984	1:15840
Keomah silt loam, 0 to 2 percent slopes	17A	22268	209025	2tjnn	il143	1986	1:15840
Keomah silt loam, 2 to 5 percent slopes	17B	1845	200949	2tjnp	il149	2001	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	1613	200948	2tjnn	il149	2001	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	9396	199277	2tjnn	il167	1999	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	17115	202173	2tjnn	il169	2000	1:12000
Keomah silt loam, 2 to 5 percent slopes	17B	9473	202174	2tjnp	il169	2000	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	3991	2542047	2tjnn	il171	1984	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	1622	179067	2tjnn	il175	1992	1:15840
Keomah silt loam, terrace, 0 to 2 percent slopes	9017A	257	2542395	2r1zm	il175	1992	1:15840
Keomah silt loam, 0 to 2 percent slopes	17A	2405	1601101	1qr2f	il183	2006	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	1924	244905	2tjnn	il187	2002	1:12000
Keomah silt loam, terrace, 0 to 2 percent slopes	9017A	162	244935	86w4	il187	2002	1:12000
Keomah silt loam, 0 to 2 percent slopes	17A	6242	869177	2tjnn	il203	2008	1:12000
Keomah silt loam, 2 to 5 percent slopes, eroded	17B2	4013	869178	2tjnq	il203	2008	1:12000

Map of Series Extent

Approximate geographic distribution of the KEOMAH 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).