Soil Data Explorer - KOBASE

Official Series Description

Lab Data Summary

Aggregate lab data for the KOBASE soil series. This aggregation is based on all pedons with a current taxon name of KOBASE, 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 KOBASE were used in the calculation. Source: KSSL snapshot (updated 2020-03-18). 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 KOBASE 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 KOBASE 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 KOBASE 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 KOBASE 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 KOBASE 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 KOBASE 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 KOBASE 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 KOBASE, 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

No block diagrams are available.

Map Units

Map units containing KOBASE 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
Kobase silty clay loam, moist, 3 to 8 percent slopes	48	12381	496999	jp57	co685	1979	1:24000
Kobase silty clay loam, moist, 0 to 3 percent slopes	47	3233	496998	jp56	co685	1979	1:24000
Kobase silty clay loam, moist, 8 to 15 percent slopes	49	2482	497000	jp58	co685	1979	1:24000
Kobase silty clay loam, warm, 2 to 8 percent slopes	78C	6899	343238	2wby4	mt011	1992	1:24000
Kobase silty clay loam, 0 to 2 percent slopes	78A	1262	343237	cj55	mt011	1992	1:24000
Kobase silty clay loam, warm, 2 to 8 percent slopes	53C	21755	343530	2wby4	mt017	1995	1:24000
Kobase silty clay loam, 0 to 2 percent slopes	53A	12958	343529	cjgl	mt017	1995	1:24000
Kobase-Gerdrum silty clay loams, 2 to 8 percent slopes	532C	11162	343524	cjgf	mt017	1995	1:24000
Kobase silty clay loam, 2 to 15 percent slopes, gullied	531D	6620	343523	cjgd	mt017	1995	1:24000
Kobase silty clay loam, 8 to 15 percent slopes	53D	3269	343531	cjgn	mt017	1995	1:24000
Delpoint-Kobase-Yawdim complex, 4 to 15 percent slopes	388D	1108	343426	cjc8	mt017	1995	1:24000
Kobase-Cabbart-Yawdim complex, 8 to 25 percent slopes	944E	818	343766	cjq7	mt017	1995	1:24000
Abor-Delpoint-Kobase complex, 4 to 15 percent slopes	958D	282	343798	2zzrm	mt017	1995	1:24000
Yawdim-Cabbart-Kobase complex, 15 to 70 percent slopes	956F	188	343794	cjr4	mt017	1995	1:24000
Gerdrum-Kobase silty clay loams, 2 to 8 percent slopes	941C	159	343760	cjq1	mt017	1995	1:24000
Kobase silty clay loam, warm, 2 to 8 percent slopes	78C	1824	342287	2wby4	mt025	1991	1:24000
Kobase silty clay loam, 2 to 8 percent slopes	141	11868	342370	2wby5	mt027	1979	1:24000
Yamacall-Rock outcrop, soft-Kobase association, 8 to 70 percent slopes	1002F	81670	342609	chhx	mt033	2002	1:24000
Kobase silty clay loam, 0 to 4 percent slopes	66B	45645	342679	chl5	mt033	2002	1:24000
Kobase silty clay loam, warm, 2 to 8 percent slopes	66C	23915	342680	2wby4	mt033	2002	1:24000
Kobase-Sonnett, thin surface, silty clay loams, 2 to 8 percent slopes	661C	21989	342678	chl4	mt033	2002	1:24000
Kobase silty clay loam, 8 to 15 percent slopes	66D	1049	342681	chl7	mt033	2002	1:24000
Gerdrum-Kobase silty clay loams, 0 to 2 percent slopes	554A	928	342783	chpj	mt033	2002	1:24000
Gerdrum-Kobase silty clay loams, 2 to 8 percent slopes	554C	846	342784	chpk	mt033	2002	1:24000
Yawdim-Cabbart-Kobase complex, 15 to 70 percent slopes	991F	630	342796	chpy	mt033	2002	1:24000
Kobase clay loam, 0 to 2 percent slopes	32A	5133	343906	cjvr	mt041	1994	1:24000
Kobase clay loam, calcareous, 0 to 2 percent slopes	321A	1987	343905	cjvq	mt041	1994	1:24000
Kobase silty clay loam, 0 to 4 percent slopes	32B	20886	344181	ck4m	mt051	1992	1:24000
Ethridge-Kobase complex, 0 to 4 percent slopes	385B	11949	344195	ck52	mt051	1992	1:24000
Kobase silty clay loam, calcareous, 0 to 4 percent	321B	11000	344176	ck4g	mt051	1992	1:24000
Marias-Kobase complex, 0 to 4 percent slopes	471B	4656	344211	ck5l	mt051	1992	1:24000
Kobase silty clay loam, 4 to 8 percent slopes	32C	1299	344182	ck4n	mt051	1992	1:24000
Kobase silty clay loam, calcareous, 4 to 8 percent	321C	527	344177	ck4h	mt051	1992	1:24000
Kobase silty clay loam, 2 to 8 percent slopes	40B	11507	344583	2wby5	mt065	1996	1:24000
Kobase-Zatoville silty clay loams, 1 to 8 percent slopes	38A	7262	344577	cgk0	mt065	1996	1:24000
Kobase silty clay loam, calcareous surface, 1 to 8 percent slopes	40C	4240	344584	cgk5	mt065	1996	1:24000
Kobase-Megonot silty clay loams, 1 to 8 percent slopes	140B	4236	344478	cghr	mt065	1996	1:24000
Kobase-Megonot silty clay loams, calcareous, 1 to 8 percent slopes	140C	559	344479	cghs	mt065	1996	1:24000
Abor-Delpoint-Kobase complex, 4 to 15 percent slopes	2	4330	344834	2zzrm	mt079	1986	1:24000
Kobase silty clay loam, warm, 2 to 8 percent slopes	74	3024	345005	2wby4	mt079	1986	1:24000
Kobase silty clay loam, 0 to 2 percent slopes	73	1979	345001	cl02	mt079	1986	1:24000
Kobar-Gerdrum silty clay loams, 2 to 8 percent slopes	75	1290	345008	cl09	mt079	1986	1:24000
Kobase silty clay loam, calcareous, 0 to 4 percent slopes	321B	7817	345125	cl42	mt101	1992	1:24000
Kobase silty clay loam, 0 to 4 percent slopes	32B	4994	345128	cl45	mt101	1992	1:24000
Kobase silty clay loam, calcareous, 4 to 8 percent slopes	321C	3741	345126	cl43	mt101	1992	1:24000
Kobase silty clay loam, 4 to 8 percent slopes	32C	1618	345129	cl46	mt101	1992	1:24000
Ethridge-Kobase silty clay loams, 0 to 4 percent slopes	385B	30558	346745	cmtb	mt615	1992	1:24000
Kobase silty clay loam, 0 to 4 percent slopes	32B	16676	346691	cmrl	mt615	1992	1:24000
Marias-Kobase complex, 0 to 4 percent slopes	471B	14309	346790	cmvs	mt615	1992	1:24000
Kobase silty clay loam, 4 to 8 percent slopes	32C	5876	3040357	cmrm	mt615	1992	1:24000
Megonot-Kobase-Delpoint complex, 2 to 8 percent slopes	142C	2512	346601	cmnp	mt615	1992	1:24000
Kobase silty clay loam, 2 to 8 percent slopes	032C	1385	346692	2wby5	mt615	1992	1:24000
Kobase silty clay loam, 8 to 15 percent slopes	32D	1333	346693	cmrn	mt615	1992	1:24000
Kobase-Megonot complex, calcareous, 0 to 8 percent slopes	140C	3524	347251	cnbn	mt624	2021	1:24000
Zatoville-Kobase complex, 2 to 8 percent slopes	234C	3156	347382	cngw	mt624	2021	1:24000
Kobase clay loam, 2 to 8 percent slopes	150C	2201	347266	cnc4	mt624	2021	1:24000
Zatoville-Kobase complex, 2 to 8 percent slopes, fan	475C	1286	1914339	2280w	mt624	2021	1:24000
Kobase-Megonot complex, calcareous, 0 to 8 percent slopes, fan	474C	1106	1912632	2267t	mt624	2021	1:24000
Kobase clay loam, calcareous surface, 0 to 4 percent slopes	471C	965	1912409	2260m	mt624	2021	1:24000
Kobase-Harlake, rarely flooded-Lostriver, rarely flooded complex, 0 to 4 percent slopes	807B	499	2384474	2l17j	mt624	2021	1:24000
Kobase clay loam, 2 to 8 percent slopes, fan	472C	362	1912710	226bb	mt624	2021	1:24000
Kobase-Megonot complex, 0 to 8 percent slopes	473C	231	1912631	2267s	mt624	2021	1:24000
Kobase-Zatoville silty clay loams, 1 to 8 percent slopes	38A	64	2513972	cgk0	mt624	2021	1:24000
Kobase-Megonot silty clay loams, 1 to 8 percent slopes	140B	33	2513995	cghr	mt624	2021	1:24000
Kobase silty clay loam, 2 to 8 percent slopes	40B	1	3176846	2wby5	mt624	2021	1:24000
Kobase silty clay loam, calcareous surface, 1 to 8 percent slopes	40C	1	2513975	cgk5	mt624	2021	1:24000
Kobase silty clay, 0 to 2 percent slopes	130A	492	147695	4ypc	mt630	1991	1:24000
Cabbart-Megonot-Kobase clay loams, 2 to 15 percent slopes	138D	6575	149650	50qf	mt639	2000	1:24000
Kobase clay loam, 2 to 8 percent slopes	150C	5244	149673	50r5	mt639	2000	1:24000
Kobase-Rentsac-Megonot complex, 4 to 25 percent slopes	363E	1048	149921	5105	mt639	2000	1:24000
Kobase clay loam, 8 to 15 percent slopes	150D	429	149674	50r6	mt639	2000	1:24000
Kobase silty clay loam, 0 to 4 percent slopes	32B	14528	347673	cns8	mt641	1994	1:24000
Kobase-Megonot silty clay loams, 2 to 8 percent slopes	322C	1882	347671	cns6	mt641	1994	1:24000
Kobase silty clay, 0 to 2 percent slopes	320A	1450	347669	cns4	mt641	1994	1:24000
Kobase-Marvan-Weingart complex, 0 to 4 percent slopes	323B	904	347672	cns7	mt641	1994	1:24000
Megonot-Kobase silty clay loams, 8 to 15 percent slopes	96D	741	347821	cny1	mt641	1994	1:24000
Kobase silty clay loam, warm, 2 to 8 percent slopes	110	30066	347932	2wby4	mt649	1985	1:24000
Gerdrum-Kobar silty clay loams, 2 to 8 percent slopes	91	9957	348127	cp7x	mt649	1985	1:24000
Yawdim-Cabbart-Kobar complex, 15 to 70 percent slopes	212	6390	348045	cp58	mt649	1985	1:24000
Gerdrum-Kobar silty clay loams, 0 to 2 percent slopes	90	1456	348126	cp7w	mt649	1985	1:24000
Kobase silty clay loam, 2 to 8 percent slopes	40B	137	1712583	2wby5	mt655	1975	1:24000
Kobase-Megonot silty clay loams, 1 to 8 percent slopes	140B	75	1712563	1vh1z	mt655	1975	1:24000
Kobase-Gullied land complex, 2 to 8 percent slopes	640B	22	1717963	1vnp5	mt655	1975	1:24000
Cabbart-Megonot-Kobase clay loams, 2 to 15 percent slopes	138D	20	361416	d42l	mt655	1975	1:24000
Kobase-Marias complex, 0 to 4 percent slopes	240B	19002	348483	cpmd	mt657	1990	1:24000
Kobase silty clay loam, 0 to 4 percent slopes	40B	13866	348635	cps9	mt657	1990	1:24000
Kobase-Ethridge clay loams, 4 to 8 percent slopes	541C	9862	348714	cpvv	mt657	1990	1:24000
Megonot-Kobase-Yawdim complex, 8 to 15 percent slopes	570D	6381	348724	cpw5	mt657	1990	1:24000
Kobase silty clay loam, 4 to 8 percent slopes	40C	3370	348636	cpsb	mt657	1990	1:24000
Kobase silty clay loam, 2 to 8 percent slopes	40B	12524	341686	2wby5	mt666	2008	1:24000
Kobase-Zatoville silty clay loams, 1 to 8 percent slopes	38A	12077	341682	cgk0	mt666	2008	1:24000
Kobase-Megonot silty clay loams, 1 to 8 percent slopes	140B	7633	341643	cghr	mt666	2008	1:24000
Kobase silty clay loam, calcareous surface, 1 to 8 percent slopes	40C	4751	341687	cgk5	mt666	2008	1:24000
Kobase-Megonot silty clay loams, calcareous, 1 to 8 percent slopes	140C	2849	341644	cghs	mt666	2008	1:24000
Kobase-Gullied land complex, 2 to 8 percent slopes	640B	325	1717570	1vn8h	mt666	2008	1:24000
Cabbart-Megonot-Kobase complex, 2 to 15 percent slopes	138D	2	1538569	1nn08	mt666	2008	1:24000
Kobase-Rentsac-Megonot complex, 4 to 25 percent slopes	363E	86	620223	ntd6	mt669		1:24000

Map of Series Extent

Approximate geographic distribution of the KOBASE 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).