Soil Data Explorer - OCONEE

Official Series Description

Lab Data Summary

Aggregate lab data for the OCONEE soil series. This aggregation is based on all pedons with a current taxon name of OCONEE, 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 OCONEE 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
113	91P0300	S1990IL189045	OCONEE	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.3791656,-89.4375
113	91P0307	S1990IL189052	OCONEE	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.3833351,-89.4402771
114B	80IL117014	1980IL117014	Oconee	1	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.1966641,-89.7554486
114B	85P0239	84IL173021	Oconee	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.4644852,-88.9683914
114B	81P0056	S1979IL145020	Oconee	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.1686096,-89.5908356
114B	94P0261	S1993IL027001	Oconee	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.726387,-89.4472198

Water Balance

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

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

Competing Series

Soil series competing with OCONEE 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 OCONEE 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 OCONEE 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 flats position figure.

Soil series sharing subgroup-level classification with OCONEE, 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-2010-09-01-09 | Fayette County - 1997

   Typical pattern of soils and parent material in the Oconee-Cowden association (Soil Survey of Fayette County, Illinois; 1997).

2. IL-2010-09-01-79 | Washington County - 1998

   Typical pattern of soils and parent material in the Oconee-Darmstadt-Coulterville association (Soil Survey of Washington County, Illinois; 1998).

3. IL-2010-09-24-04 | Christian County -

   Typical pattern of soils and underlying material in the Oconee-Virden-Herrick association (Soil Survey of Christian County, Illinois).

4. IL-2010-09-24-08 | Christian County -

   Typical pattern of soils and underlying material in the Oconee-Douglas-Harrison association (Soil Survey of Christian County, Illinois).

5. IL-2011-08-03-12 | Christian County - 1994

   Typical pattern of soils and parent material in the Oconee-Virden-Herrick association (Soil Survey of Christian County, Illinois; 1994).

6. IL-2011-08-04-98 | Randolph County - 1988

   Pattern of soils and parent material in the Coulterville-Oconee association (Soil Survey of Randolph County, Illinois; 1988).

7. IL-2011-08-05-04 | Washington County - 1998

   Typical pattern of soils and parent material in the Oconee-Darmstadt-Coulterville association (Soil Survey of Washington County, Illinois; 1998).

Map Units

Map units containing OCONEE 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
Oconee-Darmstadt silt loams, 0 to 2 percent slopes	916A	15996	173889	2ytt0	il005	1981	1:12000
Oconee-Darmstadt silt loams, 2 to 5 percent slopes, eroded	916B2	8083	173890	5tyc	il005	1981	1:12000
Oconee silt loam, 2 to 5 percent slopes	113B	3584	173834	2tp7z	il005	1981	1:12000
Oconee silt loam, 0 to 2 percent slopes	113A	3389	173833	2tp7w	il005	1981	1:12000
Oconee silt loam, 2 to 5 percent slopes, eroded	113B2	1654	173835	2wk1k	il005	1981	1:12000
Oconee silt loam, 0 to 2 percent slopes	113A	11808	261671	2tp7w	il021	1999	1:12000
Oconee silt loam, 2 to 5 percent slopes	113B	7175	261672	2tp7z	il021	1999	1:12000
Oconee-Darmstadt-Coulterville silt loams, 0 to 2 percent slopes	882A	5469	261772	2ytt1	il021	1999	1:12000
Oconee silt loam, 2 to 5 percent slopes	113B	1441	1607448	2tp7z	il023	2006	1:12000
Oconee silt loam, 0 to 2 percent slopes	113A	853	1607447	2tp7w	il023	2006	1:12000
Oconee-Darmstadt silt loams, 0 to 2 percent slopes	916A	15425	174685	2ytt0	il027	1992	1:15840
Oconee-Darmstadt complex, 2 to 5 percent slopes, eroded	916B2	10095	174686	5vs1	il027	1992	1:15840
Oconee silt loam, 0 to 2 percent slopes	113A	7720	174632	2tp7w	il027	1992	1:15840
Oconee silt loam, 2 to 5 percent slopes, eroded	113B2	3025	174633	2wk1k	il027	1992	1:15840
Oconee silt loam, 0 to 2 percent slopes	113A	110	843539	2tp7w	il045	1997	1:12000
Oconee silt loam, 0 to 2 percent slopes	113A	3757	173365	2tp7w	il051	1991	1:15840
Oconee silt loam, 2 to 5 percent slopes	113B	1668	173366	2tp7z	il051	1991	1:15840
Oconee-Darmstadt silt loams, 0 to 2 percent slopes	916A	424	3088477	2ytt0	il051	1991	1:15840
Oconee silt loam, 0 to 2 percent slopes	113A	5034	728486	2tp7w	il083	2002	1:12000
Oconee silt loam, 2 to 5 percent slopes	113B	36	728487	2tp7z	il083	2002	1:12000
Oconee silt loam, 2 to 4 percent slopes	113B	238	176628	5xsp	il101	1952	1:42240
Oconee silt loam, 0 to 2 percent slopes	113A	9261	199174	2tp7w	il117	1999	1:12000
Oconee silt loam, 2 to 5 percent slopes	113B	3748	199175	2tp7z	il117	1999	1:12000
Oconee-Darmstadt-Coulterville silt loams, 2 to 5 percent slopes	882B	53	199236	6p9z	il117	1999	1:12000
Oconee-Darmstadt-Coulterville silt loams, 2 to 5 percent slopes	882B	9511	198974	6p1j	il119	2001	1:12000
Oconee silt loam, 2 to 5 percent slopes	113B	8613	198953	2tp7z	il119	2001	1:12000
Oconee-Orthents-Urban land complex, 2 to 5 percent slopes	2113B	456	200833	6qzh	il119	2001	1:12000
Oconee silt loam, 0 to 2 percent slopes	113A	6	207594	2tp7w	il119	2001	1:12000
Oconee-Darmstadt-Coulterville silt loams, 0 to 2 percent slopes	882A	75	184150	2ytt1	il133	1998	1:12000
Oconee-Darmstadt-Coulterville silt loams, 2 to 5 percent slopes	882B	16	184151	65mc	il133	1998	1:12000
Oconee-Darmstadt-Coulterville silt loams, 2 to 5 percent slopes, eroded	882B2	21499	1721547	1vsds	il135	2007	1:12000
Oconee silt loam, 2 to 5 percent slopes	113B	17534	1721385	2tp7z	il135	2007	1:12000
Oconee silt loam, 0 to 2 percent slopes	113A	9002	1721382	2tp7w	il135	2007	1:12000
Oconee-Darmstadt-Coulterville silt loams, 0 to 2 percent slopes	882A	4570	1721384	2ytt1	il135	2007	1:12000
Oconee silt loam, 2 to 5 percent slopes, eroded	113B2	2365	1721387	2wk1k	il135	2007	1:12000
Oconee-Darmstadt-Coulterville silt loams, 2 to 5 percent slopes	882B	747	1721386	1vs7l	il135	2007	1:12000
Oconee silt loam, 0 to 2 percent slopes	113A	2275	1405435	2tp7w	il145	2005	1:12000
Oconee-Darmstadt-Coulterville silt loams, 0 to 2 percent slopes	882A	2089	1600597	2ytt1	il145	2005	1:12000
Coulterville-Oconee silt loams, 0 to 2 percent slopes	909A	8276	200538	6qnz	il157	2001	1:12000
Coulterville-Oconee silt loams, 2 to 5 percent slopes	909B	4906	200539	6qp0	il157	2001	1:12000
Oconee silt loam, 0 to 2 percent slopes	113A	1864	200465	2tp7w	il157	2001	1:12000
Oconee silt loam, 2 to 5 percent slopes	113B	1024	200466	2tp7z	il157	2001	1:12000
Oconee-Darmstadt-Coulterville silt loams, 0 to 2 percent slopes	882A	6552	183171	2ytt1	il163	1997	1:12000
Oconee-Darmstadt-Coulterville silt loams, 2 to 5 percent slopes	882B	4436	183172	64ls	il163	1997	1:12000
Oconee silt loam, 0 to 2 percent slopes	113A	3840	182848	2tp7w	il163	1997	1:12000
Oconee silt loam, 2 to 5 percent slopes	113B	2128	182849	2tp7z	il163	1997	1:12000
Oconee silt loam, 0 to 2 percent slopes	113A	22913	178979	2tp7w	il173	1990	1:15840
Oconee-Darmstadt silt loams, 0 to 2 percent slopes	916A	11094	179048	2ytt0	il173	1990	1:15840
Oconee silt loam, 2 to 5 percent slopes	113B	7067	178980	2tp7z	il173	1990	1:15840
Oconee-Darmstadt-Coulterville silt loams, 0 to 2 percent slopes	882A	35342	1542494	2ytt1	il189	2006	1:12000
Oconee silt loam, 0 to 2 percent slopes	113A	6545	1528930	2tp7w	il189	2006	1:12000
Oconee-Darmstadt-Coulterville silt loams, 2 to 5 percent slopes	882B	3573	1542496	1ns2y	il189	2006	1:12000
Oconee silt loam, 2 to 5 percent slopes	113B	3518	1528929	2tp7z	il189	2006	1:12000

Map of Series Extent

Approximate geographic distribution of the OCONEE 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).