Soil Data Explorer - SEQUOIA

Official Series Description

Lab Data Summary

Aggregate lab data for the SEQUOIA soil series. This aggregation is based on all pedons with a current taxon name of SEQUOIA, 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 SEQUOIA 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	07N0506	07KY650104	Sequoia	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	36.6266667,-84.525
128	40A5019	S1953TN009009	Sequoia	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	35.7277794,-84.0374985
128	40A5020	S1953TN009010	Sequoia	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	35.7180557,-84.0491638
147	VPI0158	V1992-VA017-158	Sequoia	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.1713056,-79.9188889
n/a	81KY-109-001	81KY-109-001	Sequoia	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	n/a
n/a	40A5453	S1965TN093001	Sequoia	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	n/a
n/a	40A5454	S1965TN093002	Sequoia	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	n/a

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the SEQUOIA 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 SEQUOIA 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 SEQUOIA 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 SEQUOIA 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 SEQUOIA 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 SEQUOIA 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 SEQUOIA 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 flats position figure.

Soil series sharing subgroup-level classification with SEQUOIA, 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-2010-09-03-01 | Clay County - 2003

   Typical pattern of soils and parent material in the Shelocta-Cloverlick-Highsplint general soil map unit. This unit covers about 80 percent of the county. Most areas are hilly and forested (Soil Survey of Clay County, Kentucky; 2003).

2. KY-2010-09-03-02 | Clay County - 2003

   Typical pattern of soils and parent material in the Shelocta-Fairpoint-Bethesda-Gilpin general soil map unit. This map unit is primarily in the west-central part of the county. It has been extensively mined for coal (Soil Survey of Clay County, Kentucky; 2003)

3. KY-2010-09-03-33 | Estill and Lee Counties - 2007

   Typical pattern of soils and their relationship to geology and topography in the Shelocta-Bledsoe-Gilpin general soil map unit in Estill County (Soil Survey of Estill and Lee Counties, Kentucky; 2007).

4. KY-2010-09-03-36 | Estill and Lee Counties - 2007

   Typical pattern of soils and their relationship to geology and topography in the Shelocta-Gilpin general soil map unit in Lee County (Soil Survey of Estill and Lee Counties, Kentucky; 2007).

5. KY-2012-01-27-49 | Clinton County - May 1994

   Pattern of soils and parent material in the Rock Outcrop-Caneyville-Sequoia-Shelocta general soil map unit (Soil Survey of Clinton County, Kentucky; May 1994).

6. KY-2012-01-31-14 | Jackson and Owsley Counties - April 1989

   Typical pattern of soils and parent material in the Shelocta-Bledsoe-Gilpin map unit (Soil Survey of Jackson and Owsley Counties, Kentucky; April 1989).

7. KY-2012-01-31-15 | Jackson and Owsley Counties - April 1989

   Typical pattern of soils and parent material in the Gilpin-Shelocta-Rayne map unit (Soil Survey of Jackson and Owsley Counties, Kentucky; April 1989).

8. KY-2012-02-01-70 | Wayne County - March 1990

   The relationship of soils to topography and underlying material in the Caneyville-Rock outcrop-Rigley-Shelocta general soil map unit (Soil Survey of Wayne County, Kentucky; March 1990).

9. TN-2012-03-19-16 | Loudon County - June 1961

   Diagram showing distribution and pattern of soils in area 3 (Soil Survey of Loudon County, TN; 1961).

Map Units

Map units containing SEQUOIA 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
Sequoia silty clay, severely eroded, rolling	Sc	1000	329212	c1kr	al049	1953	1:20000
Gilpin-Rayne-Sequoia complex, 25 to 55 percent slopes, very stony	GsF	69185	552525	2tqhj	ky051	1994	1:24000
Sequoia-Wernock silt loams, 6 to 20 percent slopes	SeD	1329	551428	lht0	ky053	1990	1:20000
Sequoia silty clay loam, 15 to 30 percent slopes	uSeqE	405	2517265	2q97v	ky053	1990	1:20000
Sequoia-Wernock silt loams, 6 to 20 percent slopes	SeD	10832	550087	lgdr	ky231	1985	1:20000
Sequoia silty clay loam, 15 to 30 percent slopes	uSeqE	393	2517263	2q97v	ky231	1985	1:20000
Gilpin-Rayne-Sequoia complex, 12 to 25 percent slopes	GrD	3220	557765	lqdf	ky616	2004	1:24000
Gilpin-Rayne-Sequoia silt loams, 12 to 25 percent slopes	GrD	18782	550706	lh1q	ky623	1985	1:20000
Shelocta-Highsplint-Sequoia complex, 30 to 80 percent slopes, rocky	11F	101156	612216	nk1x	ky630	1966	1:15840
Shelocta-Sequoia complex, 20 to 35 percent slopes, rocky	22E	65656	609622	ngc7	ky630	1966	1:15840
Wernock-Sequoia complex, 12 to 25 percent slopes	3D	46466	609545	ng8r	ky630	1966	1:15840
Sequoia-Wernock complex, 6 to 12 percent slopes	4C	14785	609547	ng8t	ky630	1966	1:15840
Wernock-Gilpin-Sequoia complex, 12 to 40 percent slopes, rocky	3E	3918	746039	t19s	ky630	1966	1:15840
Sequoia silt loam, 6 to 12 percent slopes	7C	300	609549	ng8w	ky630	1966	1:15840
Gilpin-Rayne-Sequoia complex, 25 to 55 percent slopes, very stony	GtF	49825	552119	2tqhj	ky638	1989	1:24000
Sequoia silty clay loam, eroded rolling phase	Se	8538	526976	kpc7	tn011	1951	1:20000
Sequoia silty clay loam, eroded undulating phase	Sf	5503	526977	kpc8	tn011	1951	1:20000
Sequoia silty clay, severely eroded rolling phase	Sd	3519	526975	kpc6	tn011	1951	1:20000
Sequoia silt loam, rolling phase	Sb	451	526973	kpc4	tn011	1951	1:20000
Sequoia silt loam, undulating phase	Sc	259	526974	kpc5	tn011	1951	1:20000
Muskingum-Sequoia-Petros complex, 30 to 60 percent slopes	MkF	93306	524269	kljx	tn013	1993	1:24000
Sequoia silt loam, 5 to 12 percent slopes, eroded	SeC2	2914	524275	klk3	tn013	1993	1:24000
Sequoia silty clay loam, 15 to 25 percent slopes, severely eroded	SeD3	1624	524278	klk6	tn013	1993	1:24000
Sequoia silty clay loam, 5 to 15 percent slopes, severely eroded	SeC3	1099	524276	klk4	tn013	1993	1:24000
Sequoia silt loam, 25 to 45 percent slopes, eroded	SeE2	616	524279	klk7	tn013	1993	1:24000
Sequoia silt loam, 12 to 25 percent slopes, eroded	SeD2	529	524277	klk5	tn013	1993	1:24000
Sequoia silty clay loam, eroded phase	Ssr	317	524552	klv1	tn025	1948	1:24000
Sequoia silty clay loam, rolling, 5 to 12 percent slope	75C	1103	525337	kmnc	tn063	2007	1:24000
Sequoia silty clay loam, hilly, 12 to 25 percent slope	75D	481	525339	kmnf	tn063	2007	1:24000
Sequoia silty clay loam, severely eroded, hilly, 12 to 25 percent slopes	75D3	19	525340	kmng	tn063	2007	1:24000
Sequoia silt loam, 8 to 20 percent slopes	SmD	323	1017883	1355y	tn065	1980	1:15840
Sequoia silt loam, 5 to 12 percent slopes, eroded	SeC2	2899	525501	kmtn	tn089	1991	1:24000
Sequoia silt loam, 12 to 20 percent slopes, eroded	SeD2	2029	525503	kmtq	tn089	1991	1:24000
Sequoia silty clay loam, 5 to 12 percent slopes, severely eroded	SeC3	662	525502	kmtp	tn089	1991	1:24000
Sequoia silt loam, 2 to 5 percent slopes, eroded	SeB2	313	525500	kmtm	tn089	1991	1:24000
Sequoia silty clay loam, eroded sloping phase	SkC2	1943	525998	knbp	tn105	1958	1:15840
Sequoia silty clay, severely eroded sloping phase	SlC3	1223	526000	knbr	tn105	1958	1:15840
Sequoia silty clay loam, eroded gently sloping phase	SkB2	1061	525997	knbn	tn105	1958	1:15840
Sequoia silty clay, severely eroded moderately steep phase	SlD3	480	526001	knbs	tn105	1958	1:15840
Sequoia silty clay loam, eroded moderately steep phase	SkD2	303	525999	knbq	tn105	1958	1:15840
Sequoia silt loam, sloping phase	SeC	258	525996	knbm	tn105	1958	1:15840
Sequoia silt loam, 5 to 12 percent slopes, eroded	SeC2	3678	527928	kqby	tn123	1974	1:20000
Sequoia silt loam, 2 to 5 percent slopes	SeB	2648	527927	kqbx	tn123	1974	1:20000
Sequoia silty clay, 5 to 12 percent slopes, severely eroded	SgC3	2288	527930	kqc0	tn123	1974	1:20000
Litz and Sequoia soils, gullied	LY	1375	527913	kqbg	tn123	1974	1:20000
Sequoia silt loam, 12 to 20 percent slopes, eroded	SeD2	1085	527929	kqbz	tn123	1974	1:20000
Sequoia silty clay, 12 to 20 percent slopes, severely eroded	SgD3	1082	527931	kqc1	tn123	1974	1:20000
Sequoia silty clay loam, 15 to 30 percent slopes	uSeqE	2428	2517266	2q97v	tn133	2003	1:24000
Sequoia-Gilpin complex, 20 to 35 percent slopes	SgE	734	728878	sgg6	tn143	2003	1:24000
Sequoia silt loam, 20 to 35 percent slopes	SeE	407	528420	kqvt	tn171	1980	1:24000
Sequoia silt loam, 10 to 20 percent slopes	SeD	375	528419	kqvs	tn171	1980	1:24000
Sequoia silty clay loam, eroded rolling phase	Sse	1568	529999	kshr	tn173	1945	1:24000
Sequoia silt loam, undulating phase	Sqn	333	529997	kshp	tn173	1945	1:24000
Sequoia silt loam, 3 to 12 percent slopes, eroded	SkC2	3058	528604	kr1r	tn602	1973	1:15840
Sequoia silt loam, 12 to 20 percent slopes, eroded	SkD2	2695	528605	kr1s	tn602	1973	1:15840
Sequoia silty clay loam, 15 to 30 percent slopes	uSeqE	852	2517262	2q97v	tn604	1974	1:20000
Sequoia silt loam, 12 to 20 percent slopes	SeD	1030	530683	kt6t	tn607	2003	1:24000
Sequoia silt loam, 5 to 12 percent slopes	SeC	577	530699	kt7b	tn607	2003	1:24000
Sequoia silt loam, 2 to 5 percent slopes	SeB	99	530690	kt71	tn607	2003	1:24000
Sequoia silty clay loam, eroded sloping phase	Sg	6896	1899556	21rn0	tn609	1955	1:20000
Sequoia silty clay loam, eroded gently sloping phase	Sf	3695	1899555	21rmz	tn609	1955	1:20000
Sequoia silty clay, severely eroded sloping phase	Se	2143	1899554	21rmy	tn609	1955	1:20000
Sequoia silty clay loam, 15 to 30 percent slopes	uSeqE	1686	2517261	2q97v	tn610	1960	1:15840
Wellston silt loam, 5 to 12 percent slopes	WeC	362	2427516	2mh0z	tn610	1960	1:15840
Wellston silt loam, 5 to 12 percent slopes, eroded	WeC2	310	2427517	2mh10	tn610	1960	1:15840
Wellston silt loam, 2 to 5 percent slopes	WeB	233	2427515	2mh0y	tn610	1960	1:15840
Sequoia silt loam, 12 to 20 percent slopes	SeD	823	2439113	2mw32	tn629	2003	1:24000
Sequoia silt loam, 5 to 12 percent slopes	SeC	474	2439112	2mw31	tn629	2003	1:24000
Gilpin-Sequoia complex, 5 to 12 percent slopes	GsC	1150	1910102	223m6	tn650	2008	1:12000
Gilpin-Sequoia complex, 12 to 20 percent slopes	GsD	1048	2406064	2lrpz	tn650	2008	1:12000
Gilpin-Sequoia complex, 2 to 5 percent slopes	GsB	129	2232677	2dy8v	tn650	2008	1:12000
Shelocta-Sequoia-Petros complex, 10 to 35 percent slopes	SlE	4810	2439181	2mw58	tn701	1985	1:24000
Sequoia silt loam, 5 to 20 percent slopes, eroded	SaD2	3209	2439179	2mw56	tn701	1985	1:24000
Sequoia silty clay loam, 15 to 30 percent slopes	uSeqE	936	2517264	2q97v	tn701	1985	1:24000
Sequoia-Berks silt loams, 7 to 15 percent slopes, eroded	74C2	3175	518039	kd1y	va015	1978	1:15840
Sequoia-Berks silt loams, 2 to 7 percent slopes, eroded	74B2	2868	518038	kd1x	va015	1978	1:15840
Sequoia silt loam, 2 to 7 percent slopes, eroded	73B2	1715	518036	kd1v	va015	1978	1:15840
Sequoia-Berks silt loams, 15 to 25 percent slopes, eroded	74D2	638	518040	kd1z	va015	1978	1:15840
Sequoia silt loam, 7 to 15 percent slopes, eroded	73C2	581	518037	kd1w	va015	1978	1:15840
Sequoia loam, 7 to 15 percent slopes	27C	3440	135962	4kgw	va019	1985	1:24000
Sequoia loam, 15 to 25 percent slopes	27D	2778	135963	4kgx	va019	1985	1:24000
Sequoia silt loam, 15 to 30 percent slopes	48D	1668	519112	kf5k	va023	1990	1:20000
Sequoia silt loam, 7 to 15 percent slopes	48C	496	519111	kf5j	va023	1990	1:20000
Sequoia silt loam, 7 to 15 percent slopes	38C	839	521114	kh84	va069	1983	1:15840
Sequoia silt loam, 2 to 7 percent slopes	38B	474	521113	kh83	va069	1983	1:15840
Sequoia silt loam, 15 to 25 percent slopes	38D	323	521115	kh85	va069	1983	1:15840
Sequoia silt loam, 30 to 65 percent slopes	33F	671	516699	kbnq	va071	1981	1:15840
Sequoia silt loam, 10 to 30 percent slopes	33D	331	516698	kbnp	va071	1981	1:15840
Sequoia silt loam, 7 to 15 percent slopes	37C	1059	520291	kgdl	va161	1990	1:24000
Sequoia silt loam, 15 to 25 percent slopes	37D	742	520292	kgdm	va161	1990	1:24000
Sequoia silt loam, 25 to 40 percent slopes	37E	641	520293	kgdn	va161	1990	1:24000
Sequoia silt loam, 2 to 7 percent slopes	37B	146	520290	kgdk	va161	1990	1:24000
Sequoia-Berks silt loams, 7 to 15 percent slopes, eroded	59C2	4200	518444	kdh0	va165	1980	1:20000
Sequoia-Berks loams, 15 to 25 percent slopes, stony	60D	2845	518449	kdh5	va165	1980	1:20000
Sequoia-Berks silt loams, 2 to 7 percent slopes, eroded	59B2	2182	518443	kdgz	va165	1980	1:20000
Sequoia-Berks loams, 7 to 15 percent slopes, stony	60C	1648	518448	kdh4	va165	1980	1:20000
Sequoia silt loam, 2 to 7 percent slopes, eroded	58B2	1204	518441	kdgx	va165	1980	1:20000
Sequoia-Berks silt loams, 15 to 25 percent slopes, eroded	59D2	1138	518445	kdh1	va165	1980	1:20000
Sequoia silt loam, 7 to 15 percent slopes, eroded	58C2	443	518442	kdgy	va165	1980	1:20000
Sequoia loam, 15 to 35 percent slopes	53D	1724	520784	kgxh	va171	1988	1:15840
Sequoia loam, 2 to 15 percent slopes	53C	902	520783	kgxg	va171	1988	1:15840
Sequoia loam, 35 to 55 percent slopes	53E	120	520785	kgxj	va171	1988	1:15840
Sequoia silt loam, 2 to 7 percent slopes	38B	1342	518853	kdx6	va187	1980	1:15840
Sequoia silt loam, 7 to 15 percent slopes	38C	973	518854	kdx7	va187	1980	1:15840

Map of Series Extent

Approximate geographic distribution of the SEQUOIA 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).