Soil Data Explorer - SEWARD

Official Series Description

Lab Data Summary

Aggregate lab data for the SEWARD soil series. This aggregation is based on all pedons with a current taxon name of SEWARD, 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 SEWARD 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.

Pedons used in the lab summary:

MLRA	Lab ID	Pedon ID	Taxonname	CI	NSSL / NASIS Reports	Link To SoilWeb GMap
111B	AL-119	1960-OH003-119	Seward	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.6761208,-84.0384827
97	LP7406	1974IN091006	Seward	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	41.6848222,-86.7922278

Water Balance

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

Soil series sharing subgroup-level classification with SEWARD, 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. OH-2012-02-16-31 | Henry County - November 1974

   Relationship of soils to relief and underlying material in the central part of the county (Soil Survey of Henry County, Ohio; November 1974).

Map Units

Map units containing SEWARD 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
Seward loamy fine sand, 2 to 6 percent slopes	SfB	336	161819	5fcz	in183	1985	1:15840
Seward loamy fine sand, 6 to 15 percent slopes	SfC	208	161820	5fd0	in183	1985	1:15840
Seward loamy fine sand, 1 to 6 percent slopes	60B	2793	212478	7434	mi005	1984	1:15840
Seward loamy sand, 0 to 4 percent slopes	58B	226	188667	6bb1	mi059	1991	1:15840
Seward-Urban land complex, 0 to 4 percent slopes	ShbubB	545	3015277	2v142	mi125	1980	1:15840
Seward sandy loam, loamy subsoil variant, 2 to 6 percent slopes	SfB	1202	191671	6ffy	mi161	1974	1:20000
Seward loamy fine sand, 2 to 6 percent slopes	SeB	1116	191669	6ffw	mi161	1974	1:20000
Seward loamy fine sand, 6 to 12 percent slopes	SeC	188	191670	6ffx	mi161	1974	1:20000
Seward-Urban land complex, 0 to 4 percent slopes	SwduaB	273	3015162	2v142	mi163	1974	1:12000
Seward sandy loam, 0 to 4 percent slopes	SwdhaB	49	3015219	2whvg	mi163	1974	1:12000
Seward loamy fine sand, deep phase, 0 to 5 percent slopes	SdB	170	171854	5rtp	oh003	1998	1:12000
Seward loamy fine sand, 1 to 6 percent slopes	SdB	1249	168475	5n9p	oh039	1981	1:15840
Seward loamy fine sand, 2 to 6 percent slopes	SeB	8	1539778	1np88	oh039	1981	1:15840
Seward loamy fine sand, 2 to 6 percent slopes	SdB	3317	169109	5nz4	oh051	1981	1:15840
Seward loamy fine sand, 6 to 12 percent slopes	SdC	311	169110	5nz5	oh051	1981	1:15840
Seward loamy fine sand, 2 to 6 percent slopes	SdB	785	169043	5nx0	oh069	1968	1:15840
Seward loamy fine sand, stratified substratum, 2 to 6 percent slopes	SeB	451	169046	5nx3	oh069	1968	1:15840
Seward loamy fine sand, stratified substratum, 6 to 12 percent slopes	SeC	118	169047	5nx4	oh069	1968	1:15840
Seward loamy fine sand, 6 to 12 percent slopes	SdC	108	169044	5nx1	oh069	1968	1:15840
Seward loamy fine sand, 12 to 18 percent slopes	SdD	55	169045	5nx2	oh069	1968	1:15840
Seward loamy fine sand, 0 to 2 percent slopes	SeA	13	1605996	1qx5b	oh077	1988	1:15840
Seward loamy fine sand, 2 to 6 percent slopes	SdB	965	169867	5prl	oh095	1978	1:15840
Seward loamy fine sand, 2 to 6 percent slopes	SdB	372	170687	5qm1	oh137	1971	1:20000
Seward loamy fine sand, 0 to 2 percent slopes	SdA	117	170686	5qm0	oh137	1971	1:20000
Seward loamy fine sand, 2 to 6 percent slopes	SeB	129	169582	5pgd	oh143	1983	1:15840
Seward loamy fine sand, 0 to 2 percent slopes	SdA	813	170012	5px8	oh147	1978	1:15840
Haskins-Seward complex, 2 to 6 percent slopes	HmB	599	169987	5pwg	oh147	1978	1:15840
Seward loamy fine sand, 2 to 6 percent slopes	SdB	456	170013	5px9	oh147	1978	1:15840
Seward loamy fine sand, 2 to 6 percent slopes	SeB	675	287147	9mst	oh155	1986	1:15840
Seward loamy fine sand, 2 to 6 percent slopes	SdB	1281	168198	5n0r	oh171	1975	1:15840
Seward loamy fine sand, 6 to 12 percent slopes	SdC	1	1414129	1jgj2	oh171	1975	1:15840
Seward and Ottokee, till substratum, loamy fine sands, 0 to 2 percent slopes	SdA	3173	168282	5n3g	oh173	2000	1:12000
Seward and Ottokee, till substratum, loamy fine sands, 2 to 6 percent slopes	SdB	2955	168283	5n3h	oh173	2000	1:12000
Seward fine sandy loam, 2 to 6 percent slopes	SeB	1416	426142	g9fj	wi077	1969	1:20000
Seward fine sandy loam, 0 to 2 percent slopes	SeA	428	426141	g9fh	wi077	1969	1:20000

Map of Series Extent

Approximate geographic distribution of the SEWARD 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).