Soil Data Explorer - SNEAD

Official Series Description

Lab Data Summary

Aggregate lab data for the SNEAD soil series. This aggregation is based on all pedons with a current taxon name of SNEAD, 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 SNEAD 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
107B	M8719510	1987MO195010m	Snead	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.0214272,-93.4854813
113	M9301916	1993MO019016	Snead	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.818288,-92.2489633
115B	M9101916	1991MO019016	Snead	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.0291932,-92.2552856
115B	M9101917	1991MO019017	Snead	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.0284561,-92.2527517
115B	M0702777	2007MO027077	SNEAD	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.8657778,-91.6630833

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the SNEAD 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 SNEAD series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-02-21), parsed OSD records (updated 2023-10-02) and snapshot of SC database (updated 2023-10-02).

Select annual climate data summaries for the SNEAD 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 SNEAD 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.

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

Competing Series

Soil series competing with SNEAD share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2023-10-02) and snapshot of the SC database (updated 2023-10-02).

Select annual climate data summaries for the SNEAD 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 SNEAD 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 terrace figure.

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

Soil series sharing subgroup-level classification with SNEAD, 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. MO-2012-02-06-24 | Clay and Ray Counties - January 1986

   Pattern of soils and parent material in the Snead-Ladoga association (Soil Survey of Clay and Ray Counties, Missouri; January 1986).

2. MO-2012-02-06-25 | Clay and Ray Counties - January 1986

   Pattern of soils and parent material in the Knox-Sibley association (Soil Survey of Clay and Ray Counties, Missouri; January 1986).

Map Units

Map units containing SNEAD 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
Snead-Rock outcrop complex, 14 to 30 percent slopes	10141	462	2528222	2zccn	mo021	1984	1:24000
Snead silty clay loam, 9 to 14 percent slopes, eroded	30205	4227	2531909	2qnt8	mo025	1967	1:24000
Snead silty clay loam, 5 to 9 percent slopes	30203	2011	888018	yt1r	mo025	1967	1:24000
Snead silty clay loam, 9 to 14 percent slopes	30204	1528	2531907	2qnt7	mo025	1967	1:24000
Snead-Rock outcrop complex, 14 to 30 percent slopes	10141	977	2528221	2zccn	mo025	1967	1:24000
Snead silty clay loam, 14 to 20 percent slopes	30202	739	888021	yt1v	mo025	1967	1:24000
Snead-Rock outcrop complex, 5 to 14 percent slopes	10142	202	2528230	2zccq	mo025	1967	1:24000
Snead silty clay loam, 5 to 14 percent slopes	10139	43	2521411	2ql0m	mo025	1967	1:24000
Snead silty clay loam, 9 to 14 percent slopes, eroded	30205	600	2531910	2qnt8	mo027	1986	1:24000
Snead silty clay loam, 5 to 14 percent slopes	10139	67	2521410	2ql0m	mo033	1988	1:24000
Snead-Rock outcrop complex, warm, 5 to 14 percent slopes	40107	19501	2528233	2zccr	mo037	1981	1:24000
Snead silty clay loam, 5 to 14 percent slopes	10139	14616	2521412	2ql0m	mo037	1981	1:24000
Snead-Rock outcrop complex, warm, 14 to 30 percent slopes	40108	3030	2528224	2zccp	mo037	1981	1:24000
Snead silty clay loam, warm, 5 to 14 percent slopes, eroded	10140	112	2521415	2zccj	mo037	1981	1:24000
Snead-Rock outcrop complex, 14 to 30 percent slopes	10141	6398	2521417	2zccn	mo047	1982	1:24000
Snead-Rock outcrop complex, 5 to 14 percent slopes	10142	4664	2528226	2zccq	mo047	1982	1:24000
Snead silty clay loam, 5 to 14 percent slopes	10139	1604	2521409	2ql0m	mo047	1982	1:24000
Snead-Urban land complex, 9 to 30 percent slopes	10143	1145	2528234	2ql0r	mo047	1982	1:24000
Snead silty clay loam, 14 to 30 percent slopes	10138	182	2521406	2ql0l	mo047	1982	1:24000
Snead silty clay loam, 9 to 14 percent slopes, eroded	30205	27	2531911	2qnt8	mo049	1981	1:24000
Snead silty clay, 6 to 14 percent slopes	30206	789	887956	yszr	mo061	1952	1:24000
Snead silty clay loam, 9 to 14 percent slopes, eroded	30205	74	2531912	2qnt8	mo061	1952	1:24000
Snead silty clay loam, 9 to 14 percent slopes	30204	53	2531906	2qnt7	mo061	1952	1:24000
Snead silty clay, warm, 5 to 14 percent slopes, eroded	40106	6594	886929	2zccm	mo083	1972	1:24000
Snead silty clay, warm, 2 to 5 percent slopes	40104	666	886927	2zcck	mo083	1972	1:24000
Snead silty clay, warm, 2 to 5 percent slopes, eroded	40105	591	886928	2zccl	mo083	1972	1:24000
Snead-Rock outcrop complex, warm, 5 to 14 percent slopes	40107	444	2528232	2zccr	mo083	1972	1:24000
Snead-Rock outcrop complex, warm, 14 to 30 percent slopes	40108	19955	2521420	2zccp	mo095	1982	1:24000
Snead-Urban land complex, 9 to 30 percent slopes	10143	14760	2528236	2ql0r	mo095	1982	1:24000
Snead-Rock outcrop complex, warm, 5 to 14 percent slopes	40107	12990	2528229	2zccr	mo095	1982	1:24000
Snead silty clay loam, warm, 5 to 14 percent slopes, eroded	10140	22965	2521414	2zccj	mo101	1977	1:24000
Snead-Rock outcrop complex, warm, 5 to 14 percent slopes	40107	10574	2528231	2zccr	mo101	1977	1:24000
Snead-Rock outcrop complex, warm, 14 to 30 percent slopes	40108	8644	2528223	2zccp	mo101	1977	1:24000
Snead silty clay loam, 9 to 14 percent slopes, eroded	30205	1735	2531913	2qnt8	mo107	1970	1:24000
Snead-Rock outcrop complex, warm, 14 to 30 percent slopes	40108	180	2521419	2zccp	mo107	1970	1:24000
Snead-Rock outcrop complex, warm, 5 to 14 percent slopes	40107	81	2528228	2zccr	mo107	1970	1:24000
Snead silty clay loam, warm, 5 to 14 percent slopes, eroded	10140	53	2521413	2zccj	mo107	1970	1:24000
Snead silty clay loam, 9 to 14 percent slopes, eroded	30205	1163	2531908	2qnt8	mo139	1975	1:24000
Snead-Rock outcrop complex, 14 to 30 percent slopes	10141	14763	2521418	2zccn	mo165	1982	1:24000
Snead-Rock outcrop complex, 5 to 14 percent slopes	10142	8798	2528227	2zccq	mo165	1982	1:24000
Snead-Urban land complex, 9 to 30 percent slopes	10143	1643	2528235	2ql0r	mo165	1982	1:24000
Snead-Rock outcrop complex, 14 to 30 percent slopes	10141	30112	2521416	2zccn	mo177	1979	1:24000
Snead silty clay loam, 5 to 14 percent slopes	10139	8836	2521408	2ql0m	mo177	1979	1:24000
Snead-Rock outcrop complex, 5 to 14 percent slopes	10142	7424	2528225	2zccq	mo177	1979	1:24000
Snead silty clay loam, 14 to 30 percent slopes	10138	840	2521407	2ql0l	mo177	1979	1:24000
Snead silty clay loam, 9 to 14 percent slopes, eroded	30205	441	2531914	2qnt8	mo195	1989	1:24000

Map of Series Extent

Approximate geographic distribution of the SNEAD 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).