Soil Data Explorer - OAK LEVEL

Official Series Description

Lab Data Summary

Aggregate lab data for the OAK LEVEL soil series. This aggregation is based on all pedons with a current taxon name of OAK LEVEL, 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 OAK LEVEL 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
136	04N0044	S2002NC097023	Oak Level	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	35.8919182,-80.7665863
136	04N0045	S2002NC097024	Oak Level	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	35.8919182,-80.7665863
136	04N0046	S2002NC097028	Oak Level	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	35.8919182,-80.7665863

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the OAK LEVEL 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 OAK LEVEL 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 OAK LEVEL 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 OAK LEVEL 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 OAK LEVEL 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 OAK LEVEL 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 OAK LEVEL 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 terrace figure.

There are insufficient data to create the 3D flats position figure.

Soil series sharing subgroup-level classification with OAK LEVEL, 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

No block diagrams are available.

Map Units

Map units containing OAK LEVEL 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
Oak Level clay loam, 2 to 8 percent slopes, moderately eroded	OkB2	4427	2424560	2mcym	nc059	1988	1:24000
Oak Level clay loam, 8 to 15 percent slopes, moderately eroded	OkC2	1874	2424561	2mcyn	nc059	1988	1:24000
Oak Level loam, dark surface, 6 to 10 percent slopes	OkC	985	2433745	2mphx	nc067	1970	1:15840
Oak Level loam, dark surface, 2 to 6 percent slopes	OkB	680	2433744	2mphw	nc067	1970	1:15840
Oak Level loam, dark surface, 10 to 15 percent slopes	OkD	429	2433747	2mphz	nc067	1970	1:15840
Oak Level sandy clay loam, 2 to 6 percent slopes, moderately eroded	OkB2	388	2433428	2mp5p	nc081	1975	1:20000
Oak Level sandy clay loam, 6 to 10 percent slopes, moderately eroded	OkC2	370	2433429	2mp5q	nc081	1975	1:20000
Oak Level loam, 2 to 6 percent slopes	OaB	652	2439307	2mw9b	nc145	1987	1:24000
Oak Level loam, 6 to 10 percent slopes	OaC	259	2439310	2mw9f	nc145	1987	1:24000
Oak Level sandy clay loam, 2 to 8 percent slopes, moderately eroded	OkB2	698	2389963	2l6yl	nc157	1983	1:24000
Oak Level loam, 8 to 15 percent slopes, moderately eroded	OkC2	250	2398354	2lhp8	nc197	1960	1:15840
Oak Level loam, 2 to 8 percent slopes, moderately eroded	OkB2	248	2398353	2lhp7	nc197	1960	1:15840
Oak Level loam, 15 to 25 percent slopes, moderately eroded	OkE2	68	2398355	2lhp9	nc197	1960	1:15840
Oak Level loam, 7 to 15 percent slopes	24C	4880	135954	2xx6k	va019	1985	1:24000
Oak Level loam, 15 to 25 percent slopes	24D	3336	135955	2xx6l	va019	1985	1:24000
Oak Level loam, 2 to 7 percent slopes	24B	1517	135953	2xx6j	va019	1985	1:24000
Oak Level-Siloam complex, 7 to 15 percent slopes	30C	39280	2479427	2p71j	va029	2010	1:24000
Oak Level-Diana Mills complex, 2 to 7 percent slopes	29B	11085	2479426	2p71h	va029	2010	1:24000
Oak Level-Siloam complex, 15 to 25 percent slopes	30D	7084	2479428	2p71k	va029	2010	1:24000
Oak Level loam, 7 to 15 percent slopes, extremely bouldery	28C	1599	2479424	2p71f	va029	2010	1:24000
Oak Level loam, 15 to 50 percent slopes, extremely bouldery	28E	184	2479425	2p71g	va029	2010	1:24000
Oak Level-Diana Mills complex, 2 to 7 percent slopes	28B	729	1587429	1q8vd	va049	2005	1:24000
Oak Level-Siloam complex, 7 to 15 percent slopes	29C	665	1587430	1q8vf	va049	2005	1:24000
Oak Level-Siloam complex, 15 to 25 percent slopes	29D	222	1587431	1q8vg	va049	2005	1:24000
Oak Level loam, 2 to 8 percent slopes	37B	1969	1472839	1lfly	va083	2004	1:24000
Oak Level loam, 8 to 15 percent slopes	37C	1555	1472840	1lflz	va083	2004	1:24000
Oak Level silt loam, 2 to 7 percent slopes, moderately eroded	MvB2	234	119880	2zhfh	va137	1966	1:15840
Oak Level silt loam, 7 to 15 percent slopes, moderately eroded	MvC2	159	119881	2zhfj	va137	1966	1:15840

Map of Series Extent

Approximate geographic distribution of the OAK LEVEL 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).