Soil Data Explorer - COTACO

Official Series Description

Lab Data Summary

Aggregate lab data for the COTACO soil series. This aggregation is based on all pedons with a current taxon name of COTACO, 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 COTACO were used in the calculation. Source: KSSL snapshot (updated 2020-03-18). 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
125	78KY-121-003	78KY-121-003	Cotaco	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	36.8558617,-83.7910309
130B	01P0043	00TN009001	Cotaco	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	35.5934347,-83.839065

Water Balance

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

Competing Series

Soil series competing with COTACO 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 COTACO 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 COTACO 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).

Soil series sharing subgroup-level classification with COTACO, 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. KY-2010-09-03-17 | Lawrence and Martin Counties - 2005

   Typical pattern of soils, parent material, and topography in the Udorthents-Nelse-Allegheny and Shelocta-Hazleton-Blairton general soil map units. The Udorthents-Nelse-Allegheny general soil map unit is along the Tug and Lavista Forks of the Big Sandy River and their major tributaries, and the Shelocta-Hazleton-Blairton general soil map unit is on the mountains (Soil Survey of Lawrence and Martin Counties, Kentucky; 2005).

2. KY-2010-09-03-19 | Lawrence and Martin Counties - 2005

   Typical pattern of soils, parent material, and topograhy in the Upshur-Vandalia-Rarden general soil map unit. This map unit is on the mountains (Soil Survey of Lawrence and Martin Counties, Kentucky; 2005).

3. KY-2012-01-27-58 | Elliott County - 1965

   Diagram of Muskingum-Montevallo-Ramsey association, showing relationship of soil series to topography and parent material (Soil Survey of Elliott County, Kentucky; 1965).

4. KY-2012-01-31-30 | Knox County and Eastern Part of Whitley County - May 1988

   Pattern of soils, topography, and underlying material in the Allegheny-Huntington-Newark map unit (Soil Survey of Knox County and Eastern Part of Whitley County, Kentucky; May 1988).

5. KY-2012-01-31-31 | Knox County and Eastern Part of Whitley County - May 1988

   Pattern of soils, topography, and underlying material in the Allegheny-Cotaco-Huntington map unit (Soil Survey of Knox County and Eastern Part of Whitley County, Kentucky; May 1988).

6. KY-2012-02-01-16 | McCreary-Whitley Area - 1970

   General location of the Atkins, Pope, and Tate soils on flood plains and stream terraces in association 1 (Soil Survey of McCreary-Whitley Area, Kentucky; 1970).

7. KY-2012-02-01-42 | Powell and Wolfe Counties - September 1993

   Typical pattern of soils and parent material in the Westbend general soil map unit (Soil Survey of Powell and Wolfe Counties, Kentucky; September 1993).

8. KY-2012-02-01-43 | Powell and Wolfe Counties - September 1993

   Typical pattern of soils and parent material in the Grigsby-Allegheny-Knowlton general soil map unit (Soil Survey of Powell and Wolfe Counties, Kentucky; September 1993).

9. VA-2010-11-05-06 | Buchanan County -

   Diagram of a sequence of residual, colluvial, and alluvial soils. The soils named on the land surface are shown in their natural relationship to each other and in their relationship to landform position (Soil Survey of Buchanan County, Virginia).

10. VA-2010-11-05-15 | Dickenson County - 2009

    Diagram of a sequence of residual, colluvial, and alluvial soils. The soils named on the land surface are shown in their natural relationship to each other and in their relationship to landform position (Soil Survey of Dickenson County, Virginia; 2009).

11. VA-2012-05-10-03 | Buchanan County - 2009

    Diagram of a sequence of residual, colluvial, and alluvial soils. The soils named on the land surface are shown in their natural relationship to each other and in their relationship to landform position (Soil Survey of Buchanan County, Virginia; 2009).

12. VA-2012-05-11-01 | Dickenson County - 2009

    Diagram of a sequence of residual, colluvial, and alluvial soils. The soils named on the land surface are shown in their natural relationship to each other and in their relationship to landform position (Soil Survey of Dickenson County, Virginia; 2009).

Map Units

Map units containing COTACO 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
Cotaco-Barbourville loams	Cl	3000	329137	c1hb	al049	1953	1:20000
Barbourville-Cotaco fine sandy loams	BC	2711	522820	kk15	al071	1943	1:24000
Cotaco silt loam	Ct	2670	330100	c2hd	al079	1950	1:20000
Cotaco loam	Cu	2983	331051	c3h2	al103	1949	1:15840
Cotaco loam, 2 to 6 percent slopes	CoB	3378	1727489	1vzlg	ky011	2006	1:12000
Cotaco loam, 6 to 12 percent slopes	CoC	1600	1727490	1vzlh	ky011	2006	1:12000
Allegheny-Cotaco loams, 6 to 12 percent slopes	AgC	987	1727473	1vzky	ky011	2006	1:12000
Allegheny-Cotaco loams, 2 to 6 percent slopes	AgB	800	1727472	1vzkx	ky011	2006	1:12000
Cotaco loam	Co	4684	550240	lgkp	ky043	1980	1:20000
Cotaco loam, rarely flooded	Ca	711	552515	ljy2	ky051	1994	1:24000
Gilpin-Ezel-Cotaco complex, 0 to 6 percent slopes	GeB	1772	1884665	2184n	ky063	2007	1:12000
Cotaco fine sandy loam, 2 to 6 percent slopes, rarely flooded	CtB	751	1884660	2184h	ky063	2007	1:12000
Cotaco loam, 2 to 6 percent slopes, occasionally flooded	CoB	149	1884659	2184g	ky063	2007	1:12000
Cotaco loam	Co	4446	550389	lgqh	ky605	1975	1:20000
Cotaco loam, 2 to 8 percent slopes	CoB	642	557756	lqd4	ky616	2004	1:24000
Allegheny-Cotaco complex, 2 to 6 percent slopes	uAnoB	1921	2436930	2mstn	ky627	1984	1:20000
Cotaco loam, rarely flooded	Co	1854	552214	ljmc	ky627	1984	1:20000
Cotaco loam	Co	1563	552260	ljnv	ky628	1973	1:20000
Cotaco silt loam	28	2065	1541856	1nrf9	ky630	1966	1:15840
Allegheny-Cotaco complex, 2 to 6 percent slopes	uAnoB	1020	2455165	2mstn	ky630	1966	1:15840
Cotaco silt loam, 2 to 6 percent slopes	CoB	995	550825	lh5k	ky634	1989	1:20000
Allegheny-Cotaco complex, 2 to 6 percent slopes	AoB	535	550819	lh5c	ky634	1989	1:20000
Cotaco silt loam, 0 to 2 percent slopes	CoA	223	550824	lh5j	ky634	1989	1:20000
Cotaco loam, rarely flooded	Co	534	550859	lh6n	ky639	1991	1:24000
Cotaco silt loam, 4 to 12 percent slopes, rarely flooded	CoC	649	550897	lh7w	ky640	1996	1:24000
Cotaco silt loam, 0 to 4 percent slopes, occasionally flooded	CtB	455	550898	lh7x	ky640	1996	1:24000
Cotaco silt loam, 0 to 4 percent slopes, rarely flooded	CoB	168	550896	lh7v	ky640	1996	1:24000
Cotaco silt loam, 4 to 12 percent slopes	CmC	152	550895	lh7t	ky640	1996	1:24000
Cotaco silt loam, 0 to 4 percent slopes	CmB	49	550894	lh7s	ky640	1996	1:24000
Cotaco loam, 1 to 4 percent slopes	CoB	404	550930	lh8y	ky641	1994	1:24000
Cotaco fine sandy loam, neutral variant, 2 to 6 percent slopes	CoB	250	1478757	1lmrv	ky645	1971	1:20000
Cotaco silt loam, 0 to 3 percent slopes, rarely flooded	CtA	905	2420172	2m7d2	pa005	2012	1:24000
Cotaco silt loam, 0 to 3 percent slopes, rarely flooded	CtA	982	2420170	2m7d0	pa063	2012	1:24000
Cotaco silt loam, 0 to 3 percent slopes, rarely flooded	CtA	555	2420171	2m7d1	pa065	2012	1:12000
Allegheny-Cotaco complex, occasionally flooded	Ac	322	1887355	21byf	tn001	1978	1:15840
Cotaco silt loam	Co	6316	526870	kp7t	tn011	1951	1:20000
Cotaco loam	Cn	1128	526869	kp7s	tn011	1951	1:20000
Cotaco fine sandy loam	Cc	794	527158	kpk3	tn051	1950	1:20000
Cotaco and Atkins silt loams (Bonair)	Ck	3641	526244	knlm	tn115	1951	1:20000
Allegheny-Cotaco complex, occasionally flooded	Ac	451	728877	sgg5	tn143	2003	1:24000
Cotaco loam	Co	334	528404	kqv9	tn171	1980	1:24000
Allegheny-Cotaco complex, occasionally flooded	Ac	13571	530679	kt6p	tn607	2003	1:24000
Allegheny-Cotaco complex, occasionally flooded	Ac	9092	2439086	2mw26	tn629	2003	1:24000
Cotaco silty clay loam, 2 to 8 percent slopes	CoB	221	557309	lpxq	tn640	2007	1:24000
Allegheny-Cotaco fine sandy loams, 1 to 7 percent slopes	3B	6663	517760	kcry	va015	1978	1:15840
Allegheny-Cotaco cobbly fine sandy loams, 1 to 7 percent slopes	4B	3928	517850	kcvv	va015	1978	1:15840
Allegheny-Cotaco cobbly fine sandy loams, 7 to 15 percent slopes	4C	1878	517852	kcvx	va015	1978	1:15840
Allegheny-Cotaco fine sandy loams, 7 to 15 percent slopes	3C	1341	517761	kcrz	va015	1978	1:15840
Cotaco variant silt loam	26	876	517619	kcmd	va015	1978	1:15840
Cotaco loam, 8 to 15 percent slopes	6C	206	1670823	1t2mj	va027	2006	1:24000
Cotaco loam, 8 to 15 percent slopes	4C	375	2399856	2lk7q	va051	2008	1:24000
Cotaco loam, 2 to 7 percent slopes	10B	595	516644	kbly	va071	1981	1:15840
Cotaco loam, 7 to 15 percent slopes	10C	374	516645	kblz	va071	1981	1:15840
Cotaco loam, 2 to 7 percent slopes	11B	1898	517139	kc3x	va139	1995	1:20000
Cotaco loam, 2 to 7 percent slopes	7B	1374	521299	khg3	va155	1981	1:15840
Cotaco loam, 7 to 15 percent slopes	7C	739	521300	khg4	va155	1981	1:15840
Cotaco loam, 0 to 2 percent slopes	7A	655	521298	khg2	va155	1981	1:15840
Cotaco loam, 2 to 7 percent slopes	9B	416	520430	kgk2	va161	1990	1:24000
Cotaco loam, 7 to 15 percent slopes	9C	63	520431	kgk3	va161	1990	1:24000
Cotaco fine sandy loam, 0 to 7 percent slopes	18B	2239	518365	kddg	va165	1980	1:20000
Cotaco cobbly fine sandy loam, 0 to 7 percent slopes	19B	2222	518366	kddh	va165	1980	1:20000
Cotaco variant cobbly loam, 1 to 7 percent slopes	20B	1658	518368	kddk	va165	1980	1:20000
Ezel-Cotaco, deep fine sandy loams, 3 to 8 percent slopes	23B	452	2508543	2q7pr	va195	2010	1:24000
Cotaco loam, 8 to 15 percent slopes	19C	306	2507463	2q2xz	va195	2010	1:24000
Allegheny-Cotaco cobbly fine sandy loams-Urban land complex, 1 to 7 percent slopes	504B	369	3025813	2xd6m	va820		1:12000
Allegheny-Cotaco-Urban land complex, 1 to 7 percent slopes	503B	251	3025810	2xd6k	va820		1:12000
Allegheny-Cotaco cobbly fine sandy loams, 7 to 15 percent slopes	4C	108	3025814	2xd5y	va820		1:12000
Allegheny-Cotaco fine sandy loams, 7 to 15 percent slopes	3C	52	3025811	2xd5m	va820		1:12000
Allegheny-Cotaco-Urban land complex, 7 to 15 percent slopes	503C	33	3025809	2xd6l	va820		1:12000
Allegheny-Cotaco cobbly fine sandy loams, 1 to 7 percent slopes	4B	27	3025763	2xd5x	va820		1:12000
Allegheny-Cotaco fine sandy loams, 1 to 7 percent slopes	3B	8	3025812	2xd5l	va820		1:12000
Cotaco silt loam, 3 to 8 percent slopes	CtB	550	513644	k7h5	wv011	1984	1:20000
Cotaco silt loam	Co	470	532301	kvx0	wv017	2001	1:24000
Cotaco loam	Ct	1077	512835	k6n2	wv039	1976	1:20000
Cotaco loam, 3 to 8 percent slopes	CoB	285	553360	lktb	wv043	2005	1:24000
Cotaco loam, 0 to 3 percent slopes	CoA	83	553361	lktc	wv043	2005	1:24000
Cotaco-Urban land complex, 3 to 8 percent slopes	CuB	54	553359	lkt9	wv043	2005	1:24000
Cotaco-Urban land complex, 8 to 15 percent slopes	CuC	36	553358	lkt8	wv043	2005	1:24000
Cotaco silt loam, 0 to 3 percent slopes, rarely flooded	CkA	261	1720618	1vrft	wv051	2007	1:12000
Urban land-Cotaco complex, 0 to 3 percent slopes	UpA	130	1720625	1vrg1	wv051	2007	1:12000
Cotaco silt loam, 0 to 3 percent slopes	ChA	44	1720624	1vrg0	wv051	2007	1:12000
Cotaco loam, 3 to 8 percent slopes	CtB	1450	515006	k8x3	wv099	1993	1:24000
Urban land-Kanawha-Cotaco complex, 0 to 8 percent slopes	UvB	1150	515038	k8y4	wv099	1993	1:24000
Cotaco loam, 0 to 3 percent slopes	CtA	520	515005	k8x2	wv099	1993	1:24000
Cotaco silt loam, 3 to 8 percent slopes	CtB	991	515112	k90j	wv101	1992	1:24000
Cotaco silt loam, 3 to 10 percent slopes	CoB	994	514585	k8gj	wv601	1966	1:15840
Cotaco silt loam, 0 to 3 percent slopes	CoA	482	514584	k8gh	wv601	1966	1:15840
Cotaco silt loam, 10 to 20 percent slopes	CoC	253	514586	k8gk	wv601	1966	1:15840
Urban land-Kanawha-Cotaco complex, 0 to 8 percent slopes	UtB	10	1155568	17sgd	wv620	2005	1:24000
Cotaco loam, 3 to 8 percent slopes	CtB	149	2427100	2mglk	wv622	2010	1:12000
Cotaco loam, 3 to 8 percent slopes	CtB	4664	2453206	2nbrp	wv705	2009	1:24000
Cotaco silt loam, 3 to 8 percent slopes	CtB	1408	2593443	2qdq9	wv767	2011	1:20000

Map of Series Extent

Approximate geographic distribution of the COTACO 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).