Soil Data Explorer - KEOKUK

Official Series Description

Lab Data Summary

Aggregate lab data for the KEOKUK soil series. This aggregation is based on all pedons with a current taxon name of KEOKUK, 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 KEOKUK 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 KEOKUK 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 KEOKUK 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 KEOKUK 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 KEOKUK 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 hills figure.

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

Competing Series

Soil series competing with KEOKUK 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 KEOKUK 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 KEOKUK 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 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 KEOKUK, 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. OK-2010-09-29-08 | Noble County - 2005

   Typical pattern of soils and underlying material in the Keokuk-Goodnight-Ashport and the McLain-Braman-Lela general soil map units (Soil Survey of Noble County, Oklahoma; 2005).

2. OK-2012-02-16-13 | Cleveland County - April 1987

   Typical pattern of soils and underlying material in the Norge-Teller-Vanoss map unit and Asher-Keokuk-Canadian map unit (Soil Survey of Cleveland County, Oklahoma; April 1987).

Map Units

Map units containing KEOKUK 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
Keokuk very fine sandy loam, 0 to 1 Percent slopes, rarely flooded	Ra	2100	381763	2tp6l	ok011	1965	1:24000
Keokuk very fine sandy loam, 0 to 1 Percent slopes, rarely flooded	90	2592	382154	2tp6l	ok027	1984	1:24000
Keokuk loam, 0 to 1 percent slopes, occasionally flooded	Ya	1473	382307	dtth	ok037	1952	1:24000
Keokuk loam, 0 to 1 percent slopes, rarely flooded	Rc	5589	382522	dv1f	ok047	1965	1:24000
Keokuk-Buttermilk complex, 0 to 1 percent slopes, rarely flooded	Re	1638	382523	dv1g	ok047	1965	1:24000
Keokuk silt loam, 0 to 1 percent slopes, rarely flooded	32	13241	382564	dv2s	ok049	1982	1:24000
Keokuk-Urban land complex, 0 to 1 percent slopes, rarely flooded	33	595	382565	dv2t	ok049	1982	1:24000
Keokuk very fine sandy loam, 0 to 1 Percent slopes, rarely flooded	16	1749	382634	2tp6l	ok051	1975	1:24000
Keokuk loam, 0 to 1 percent slopes, occasionally flooded	Hu	2032	383330	dvwh	ok071	1965	1:24000
Keokuk very fine sandy loam, 0 to 1 percent slopes, occasionally flooded	KeoA	317	623477	nxs5	ok071	1965	1:24000
Keokuk very fine sandy loam, 0 to 1 Percent slopes, rarely flooded	KekA	48	623476	2tp6l	ok071	1965	1:24000
Keokuk silt loam, 0 to 1 percent slopes, occasionally flooded	20	9678	383776	dwbw	ok087	1976	1:24000
Keokuk loam, 0 to 1 percent slopes, rarely flooded	19	3394	383774	dwbt	ok087	1976	1:24000
Keokuk very fine sandy loam, 0 to 1 percent slopes, occasionally flooded	KeoA	945	384066	dwn7	ok103	1994	1:24000
Keokuk very fine sandy loam, 0 to 1 Percent slopes, rarely flooded	KekA	715	384065	2tp6l	ok103	1994	1:24000
Keokuk very fine sandy loam, 0 to 1 Percent slopes, rarely flooded	KekA	2297	384311	2tp6l	ok109	1996	1:12000
Keokuk very fine sandy loam, 0 to 1 percent slopes, occasionally flooded	KeoA	1120	384312	dwx5	ok109	1996	1:12000
Keokuk-Urban land complex, 0 to 1 percent slopes, rarely flooded	KeUA	493	384310	dwx3	ok109	1996	1:12000
Keokuk very fine sandy loam, 0 to 1 percent slopes, occasionally flooded	7	2132	623402	nxpr	ok113	1975	1:24000
Keokuk very fine sandy loam, 0 to 1 percent slopes, occasionally flooded	KeoA	2025	1423158	1jrxb	ok117	2007	1:24000
Keokuk very fine sandy loam, 0 to 1 Percent slopes, rarely flooded	KekA	2006	1675953	2tp6l	ok117	2007	1:24000
Keokuk silt loam, 0 to 1 percent slopes, rarely flooded	21	10334	384681	dx92	ok125	1975	1:24000
Keokuk silt loam, 0 to 1 percent slopes, rarely flooded	20	1571	384806	dxf3	ok133	1976	1:24000

Map of Series Extent

Approximate geographic distribution of the KEOKUK 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).