Official Series Description


Lab Data Summary

Aggregate lab data for the DELWIN soil series. This aggregation is based on all pedons with a current taxon name of DELWIN, 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 DELWIN were used in the calculation. Source: KSSL snapshot . Methods used to assemble the KSSL snapshot used by SoilWeb / SDE

There are insufficient data to create the lab data summary figure.


Water Balance

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

Click the image to view it full size.



Click the image to view it full size.

Sibling Summary

Siblings are those soil series that occur together in map units, in this case with the DELWIN series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot , parsed OSD records and snapshot of SC database .

Click the image to view it full size.

Select annual climate data summaries for the DELWIN series and siblings. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data .

Click the image to view it full size.

Geomorphic description summaries for the DELWIN 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 .

Click the image to view it full size.

Click the image to view it full size.

There are insufficient data to create the 3D mountains figure.

Click the image to view it full size.

Click the image to view it full size.

Competing Series

Soil series competing with DELWIN share the same family level classification in Soil Taxonomy. Source: parsed OSD records and snapshot of the SC database .

Click the image to view it full size.

Select annual climate data summaries for the DELWIN series and competing. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data .

There are insufficient data to create the annual climate figure.

Geomorphic description summaries for the DELWIN 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 .

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 terrace figure.

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

Soil series sharing subgroup-level classification with DELWIN, 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 .

Block Diagrams

Click a link below to display the diagram. Note that these diagrams may be from multiple survey areas.

  1. TX-2010-11-03-50 | King County - 2007

    Typical pattern of the Grandfield-Shrewder-Devol and Delwin-Nobscot general soil map units (Soil Survey of King County, Texas; 2007).

  2. TX-2012-03-22-05 | Wheeler County - October 1975

    Relationship of soils in the Pratt-Delwin association to parent material and relief (Soil Survey of Wheeler County, TX; 1975).

Map Units

Map units containing DELWIN 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
Delwin-Nobscot complex, 0 to 3 percent slopes1541739381650dt49ok00919781:24000
Nobscot and Delwin soils, 2 to 5 percent slopes, gullied383011381675dt53ok00919781:24000
Nobscot-Delwin complex, 1 to 5 percent slopesNbC63737382449dtz2ok04519631:24000
Delwin fine sand, 0 to 3 percent slopes, moistBfB210253824192t6nyok04519631:24000
Nobscot-Delwin complex, 3 to 8 percent slopes, severely eroded MLRA 78CNc325923824502t6prok04519631:24000
Nobscot and Delwin soils, 3 to 8 percent slopesNbC43337384756dxchok12919611:24000
Nobscot and Delwin soils, 0 to 3 percent slopesNbB42739384755dxcgok12919611:24000
Nobscot, Delwin, and Grandfield soils, 3 to 8 percent slopes, severely erodedEr22776384738dxbxok12919611:24000
Nobscot and Delwin soils, 3 to 8 percent slopes, erodedNc22662384757dxcjok12919611:24000
Nobscot-Delwin complex, 3 to 5 percent slopesNbC15534385283dxxhok15319611:24000
Delwin fine sand, 0 to 3 percent slopes, moistBfB113303852622t6nyok15319611:24000
Nobscot-Delwin complex, 3 to 8 percent slopes, severely eroded MLRA 78CNc313783852842t6prok15319611:24000
Delwin fine sand, 0 to 3 percent slopesDe51893645852t018tx10119691:20000
Delwin fine sand, 0 to 3 percent slopes, moistDeB36763651692t6nytx12919751:24000
Miles and Delwin soils, 3 to 5 percent slopes, erodedMhC23798391933f4v0tx17919651:20000
Delwin fine sand, 0 to 3 percent slopesBf2773669272t018tx19119651:20000
Delwin fine sand, 0 to 3 percent slopes, moistPaB21783675752t6nytx21119671:20000
Delwin fine sand, 0 to 3 percent slopesDeC42393685792t018tx26919991:31680
Delwin fine sand, 0 to 3 percent slopesDeB171153708562t018tx34519721:24000
Delwin fine sand, 0 to 3 percent slopes, moistDeB365993732882t6nytx48319701:24000
Delwin fine sand, moist, 2 to 5 percent slopes, severely erodedDfC317943732892y7bwtx48319701:24000

Map of Series Extent

Approximate geographic distribution of the DELWIN 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 .