Soil Data Explorer - TOCCOA

Official Series Description

Lab Data Summary

Aggregate lab data for the TOCCOA soil series. This aggregation is based on all pedons with a current taxon name of TOCCOA, 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 TOCCOA 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
133A	S89AL-087-1	89AL087001-pgm	Toccoa	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	32.4611111,-85.8819444
136	S72AL-029-10	72AL029010-pgm	Toccoa	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	33.706672668457,-85.3938903808594

Water Balance

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

Competing Series

Soil series competing with TOCCOA 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 TOCCOA 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 TOCCOA 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 flats position figure.

Soil series sharing subgroup-level classification with TOCCOA, 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. NC-2010-09-28-06 | Rutherford County - 1997

   Typical relationship of soils, landform position, and parent material in the Chewacla-Toccoa-Buncombe general soil map unit (Soil Survey of Rutherford County, North Carolina; 1997).

2. NC-2010-09-28-09 | Rutherford County - 1997

   A cross section showing the relationship between flood plain soils and a seasonal high water table (Soil Survey of Rutherford County, North Carolina; 1997).

Map Units

Map units containing TOCCOA 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
Toccoa soils	Ta	1706	523028	kk7w	al019	1973	1:20000
Toccoa fine sandy loam	To	5464	328554	c0wj	al021	1967	1:20000
Toccoa soils, local alluvium	Tr	732	328555	c0wk	al021	1967	1:20000
Toccoa sandy loam, 0 to 2 percent slopes, occasionally flooded	Ts	1000	122796	2twx1	al027	1971	1:20000
Chewacla, Cartecay and Toccoa soils, 0 to 1 percent slopes, frequently flooded	CHA	26127	1895715	2xn6v	al037	2006	1:24000
Toccoa fine sandy loam, 0 to 2 percent slopes, occasionally flooded	ToA	2033	1895741	21mny	al037	2006	1:24000
Chewacla, Cartecay and Toccoa soils, 0 to 1 percent slopes, frequently flooded	Ma	38108	329277	2xn6v	al051	1948	1:20000
Toccoa sandy loam	59	740	329430	c1ss	al055	1976	1:20000
Toccoa sandy loam, 0 to 2 percent slopes, frequently flooded	39	13775	330222	2twx0	al081	1979	1:20000
Toccoa fine sandy loam, 0 to 1 percent slopes, occasionally flooded	TcA	1177	330496	c2x5	al087	1997	1:24000
Toccoa fine sandy loam, gently undulating, occasionally flooded	ToB	942	330497	c2x6	al087	1997	1:24000
Congaree-Toccoa complex, gently undulating, occasionally flooded	CtB	5390	331370	c3tc	al113	1997	1:24000
Toccoa sandy loam, 0 to 2 percent slopes	TcA	900	331415	c3vt	al115	1983	1:24000
Toccoa loams	To	5834	523264	kkhh	al121	1969	1:20000
Chewacla, Cartecay and Toccoa soils, 0 to 1 percent slopes, frequently flooded	CHA	32215	1476401	2xn6v	al123	2005	1:24000
Toccoa fine sandy loam, 0 to 2 percent slopes, occasionally flooded	ToA	2930	1476449	1lkcd	al123	2005	1:24000
Toccoa sandy loam, 0 to 3 percent slopes, occasionally flooded	ToA	2730	1611872	1r38w	ga015	2013	1:12000
Toccoa sandy loam, 0 to 2 percent slopes, frequently flooded	ToA	990	1018608	2twx0	ga035	2003	1:24000
Toccoa sandy loam, 0 to 2 percent slopes, occasionally flooded	Toc	8165	124220	2twx1	ga067	1969	1:15840
Toccoa sandy loam, local alluvium	Tod	730	124221	4584	ga067	1969	1:15840
Toccoa sandy loam, 0 to 2 percent slopes, frequently flooded	Tf	5046	124280	2twx0	ga089	1979	1:15840
Toccoa sandy loam, high	To	838	124281	45b2	ga089	1979	1:15840
Chewacla, Cartecay, and Toccoa soils, 0 to 2 percent slopes, frequently flooded	Alp	7365	126226	2y6q1	ga097	1960	1:15840
Toccoa and Chewacla soils, 0 to 2 percent slopes, occasionally flooded	Alm	1020	126225	2xnyy	ga097	1960	1:15840
Toccoa and Chewacla soils, 0 to 2 percent slopes, occasionally flooded	Ab	4925	124294	2xnyy	ga117	1957	1:20000
Cartecay-Toccoa complex, 0 to 2 percent slopes, occasionally flooded	CaA	21640	1654028	1sj4r	ga121	2007	1:12000
Toccoa fine sandy loam, 0 to 4 percent slopes, frequently flooded	ToA	8740	725706	sc4w	ga135	1966	1:15840
Toccoa-Cartecay complex, 0 to 2 percent slopes, occasionally flooded	Alm	1165	124453	2xnyt	ga137	1960	1:20000
Toccoa-Cartecay complex, 0 to 2 percent slopes, occasionally flooded	Alm	2602	124564	2xnyt	ga147	1961	1:20000
Toccoa fine sandy loam, 0 to 3 percent slopes, frequently flooded	ToA	2410	126848	47zw	ga159	1997	1:24000
Chewacla, Cartecay, and Toccoa soils, 0 to 2 percent slopes, frequently flooded	Alp	19370	124660	2y6q1	ga199	1960	1:15840
Toccoa and Chewacla soils, 0 to 2 percent slopes, occasionally flooded	Alm	1520	124659	2xnys	ga199	1960	1:15840
Toccoa sandy loam, 0 to 2 percent slopes, frequently flooded	ToA	5160	2200564	2twx0	ga207	2007	1:24000
Toccoa loamy sand, 0 to 3 percent slopes, frequently flooded	ToA	5980	142646	4sfh	ga211	1998	1:24000
Toccoa sandy loam	To	4245	124852	45xh	ga215	1980	1:15840
Toccoa fine sandy loam, occasionally flooded	To	10760	124907	45z8	ga221	1984	1:20000
Toccoa sandy loam, 0 to 3 percent slopes, occasionally flooded	ToA	3820	2511208	tryv	ga223	2010	1:12000
Chewacla, Cartecay, and Toccoa soils, 0 to 2 percent slopes, frequently flooded	Alp	4800	124938	2y6q1	ga255	1962	1:15840
Toccoa and Chewacla soils, 0 to 2 percent slopes, occasionally flooded	Alm	1210	124937	2xnys	ga255	1962	1:15840
Chewacla, Cartecay, and Toccoa soils, 0 to 2 percent slopes, frequently flooded	Alp	10440	124999	2y6q1	ga297	1962	1:15840
Toccoa and Chewacla soils, 0 to 2 percent slopes, occasionally flooded	Alm	2830	124998	2xnys	ga297	1962	1:15840
Congaree and Toccoa soils	Cot	24365	125202	468s	ga604	1972	1:20000
Starr and Toccoa soils	Sen	975	125231	469q	ga604	1972	1:20000
Toccoa sandy loam, 0 to 2 percent slopes, occasionally flooded	Toc	15065	125289	2twx1	ga605	1967	1:15840
Toccoa sandy loam, local alluvium	Tod	1245	125290	46cm	ga605	1967	1:15840
Toccoa soils	To	13570	125332	46dz	ga606	1973	1:20000
Toccoa fine sandy loam	Tk	10715	531303	ktvt	ga621	1975	1:20000
Toccoa complex	Toe	13620	531373	kty2	ga622	1967	1:20000
Toccoa sandy loam, 0 to 2 percent slopes, frequently flooded	TS	5400	125538	2twx0	ga625	1976	1:20000
Toccoa sandy loam, 0 to 2 percent slopes, occasionally flooded	To	2385	125539	2twx1	ga625	1976	1:20000
Toccoa loam	Tv	11085	125579	46ny	ga628	1977	1:20000
Toccoa sandy loam, 0 to 2 percent slopes, occasionally flooded	Toc	13010	125694	2twx1	ga632	1967	1:15840
Toccoa fine sandy loam	To	27738	125742	46v6	ga636	1975	1:20000
Toccoa and Chewacla soils, 0 to 2 percent slopes, occasionally flooded	Alm	3950	125745	2xnys	ga642	1967	1:15840
Toccoa loam, occasionally flooded	To	14635	127121	488p	ga645	1995	1:12000
Toccoa and Congaree soils, frequently flooded	TCA	6505	127383	48k4	ga649	1992	1:12000
Toccoa fine sandy loam, rarely flooded	Ta	1400	127384	48k5	ga649	1992	1:12000
Toccoa fine sandy loam	To	2180	531409	ktz7	ga651	1976	1:20000
Toccoa sandy loam, 0 to 2 percent slopes, frequently flooded	ToA	10307	747895	2twx0	ga655	2012	1:24000
Toccoa loam, 0 to 2 percent slopes, occasionally flooded	ToA	4601	117099	3xvd	nc045	2000	1:24000
Riverview and Toccoa soils, 0 to 2 percent slopes, occasionally flooded	RtA	1356	2424275	2mcnf	nc097	2011	1:12000
Toccoa sandy loam, 0 to 3 percent slopes, occasionally flooded	ToA	2880	117652	3yf7	nc161	1997	1:24000
Toccoa sandy loam	Tc	12480	1155021	17rwr	sc001	1976	1:20000
Toccoa-Cartecay complex	Tc	5145	131816	4f54	sc007	1975	1:20000
Worsham sandy loam, 0 to 6 percent slopes	WoB	1713	132175	4fjq	sc021	1960	1:20000
Toccoa loam	To	13820	132202	4fkl	sc023	1977	1:20000
Toccoa sandy loam	To	12933	129884	4c4t	sc037	1978	1:20000
Toccoa loam	To	20550	129926	4c65	sc039	1977	1:20000
Cartecay and Toccoa soils	Cb	23441	132466	4fv3	sc045	1972	1:20000
Cartecay and Toccoa soils	Ca	16867	130027	4c9f	sc047	1973	1:20000
Toccoa-Cartecay complex	Tc	289	2394371	2lcjs	sc057	1967	1:20000
Cartecay-Toccoa complex	Ca	23885	130352	4cmx	sc059	1970	1:20000
Toccoa fine sandy loam	To	1966	130542	4cv1	sc063	1972	1:20000
Cartecay and Toccoa soils	Ca	15787	130680	4czh	sc065	1973	1:20000
Toccoa sandy loam, 0 to 3 percent slopes, frequently flooded	ToA	12531	639542	pghd	sc071	2005	1:24000
Toccoa sandy loam, 0 to 2 percent slopes, occasionally flooded	49A	3747	1459539	1kzrx	sc071	2005	1:24000
Toccoa soils	To	9010	131076	4dd8	sc077	1967	1:20000
Toccoa loam	To	2702	131133	4dg3	sc079	1976	1:20000
Toccoa-Chewacla complex, 0 to 2 percent slopes, frequently flooded	Mv	16440	131222	2ycln	sc081	1960	1:20000
Chewacla-Toccoa complex, 0 to 2 percent slopes, frequently flooded	Mw	2408	131223	2yclr	sc081	1960	1:20000
Toccoa fine sandy loam, 0 to 2 percent slopes, frequently flooded	ToA	24737	2678820	2r2v5	sc083	1965	1:20000
Cartecay-Toccoa complex	Ca	18177	131459	4dsm	sc087	1970	1:20000
Worsham sandy loam, 0 to 6 percent slopes	WoB	971	131011	4db5	sc602	1960	1:20000
Buncombe loamy sand	Bu	127	130922	4d79	sc602	1960	1:20000
Toccoa fine sandy loam	12	1703	130731	4d14	sc604	1982	1:24000
Toccoa-Cartecay complex	Tc	642	130235	4cj4	sc610	1985	1:20000
Toccoa sandy loam	To	420	130236	4cj5	sc610	1985	1:20000
Toccoa loam	To	837	131775	4f3t	sc615	1981	1:20000
Toccoa loam, frequently flooded	To	359	131367	4dpn	sc696	1988	1:15840
Toccoa fine sandy loam, 0 to 3 percent slopes, rarely flooded	Tc	248	632840	p7j6	tn093	2005	1:12000
Toccoa loam, occasionally flooded	To	161	526124	kngr	tn107	1999	1:24000
Toccoa loam, 0 to 4 percent slopes, rarely flooded	To	3260	523782	kl16	tn139	1997	1:24000
Toccoa loam	To	1173	528430	kqw4	tn171	1980	1:24000
Toccoa fine sandy loam, 0 to 2 percent slopes, frequently flooded	19A	1440	118113	3yx3	va007	1994	1:24000
Buncombe-Toccoa complex	Bt	966	118696	3zhx	va037	1970	1:15840
Toccoa fine sandy loam	To	282	118781	3zln	va037	1970	1:15840
Toccoa fine sandy loam, 0 to 4 percent slopes	26B	462	118884	3zpz	va041	1974	1:15840
Toccoa fine sandy loam, 0 to 2 percent slopes, frequently flooded	40A	2387	1587452	1q8w4	va049	2005	1:24000
Toccoa fine sandy loam, 0 to 3 percent slopes, occasionally flooded	49A	278	1472860	1lfmm	va083	2004	1:24000
Toccoa fine sandy loam	To	405	119288	4040	va087	1973	1:15840
Toccoa fine sandy loam	Ts	1139	119426	408g	va109	1972	1:15840
Toccoa loamy fine sandy	To	274	119425	408f	va109	1972	1:15840
Chewacla, Toccoa, and Augusta loams, frequently flooded	6	13047	119474	40b0	va111	1979	1:20000
Toccoa fine sandy loam, 0 to 2 percent slopes, occasionally flooded	ToA	897	119617	40gm	va117	1990	1:24000
Toccoa silt loam	22	1800	120197	412b	va145	1984	1:15840
Toccoa loamy sand	41	251	120442	41b7	va177	1980	1:15840
Toccoa - Urban land complex	183	14	2514319	2qjh1	va540	2011	1:24000
Toccoa loamy sand, frequently flooded	41	61	2376413	2krvh	va630	2008	1:12000
Chewacla-Toccoa complex	CT	10318	120690	41l7	va631	1973	1:15840
Toccoa fine sandy loam	To	4878	120769	41ns	va631	1973	1:15840
Toccoa fine sandy loam, 0 to 4 percent slopes, frequently flooded	35A	214	140115	4psv	va760	2004	1:24000

Map of Series Extent

Approximate geographic distribution of the TOCCOA 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).