Soil Data Explorer - DRAPER

Official Series Description

Lab Data Summary

Aggregate lab data for the DRAPER soil series. This aggregation is based on all pedons with a current taxon name of DRAPER, 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 DRAPER were used in the calculation. Source: KSSL snapshot (updated 2020-03-13). 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 DRAPER 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 DRAPER 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 DRAPER 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 DRAPER 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 hills figure.

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

Competing Series

Soil series competing with DRAPER 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 DRAPER 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 DRAPER 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 hills figure.

Soil series sharing subgroup-level classification with DRAPER, 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

No block diagrams are available.

Map Units

Map units containing DRAPER 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
Draper loam, 1 to 3 percent slopes	DrB	943	80527	2psn	id660	1962	1:15840
Draper loam, 0 to 1 percent slopes	DrA	467	80526	2psm	id660	1962	1:15840
Draper clay loam, 0 to 1 percent slopes	DpA	71	80525	2psl	id660	1962	1:15840
Draper loam, 0 to 1 percent slopes	DrA	2256	80740	2q0j	id665	1967	1:20000
Draper loam, 1 to 3 percent slopes	DrB	423	80741	2q0k	id665	1967	1:20000
Draper loam, 0 to 3 percent slopes	DrA	254	481344	j4w7	ut602	1969	1:20000
Draper loam, drained, 1 to 3 percent slopes	DrB	1295	481551	j52x	ut607	1965	1:15840
Ironton-Draper complex, 0 to 3 percent slopes	IDA	872	481574	j53n	ut607	1965	1:15840
Draper loam, drained, 0 to 1 percent slopes	DrA	844	481550	j52w	ut607	1965	1:15840
Draper loam, drained, 3 to 6 percent slopes	DrC	470	481552	j52y	ut607	1965	1:15840
Draper loam, 0 to 1 percent slopes	DaA	249	481548	j52t	ut607	1965	1:15840
Draper gravelly loam, gravelly subsoil variant, 3 to 6 percent slopes	DsC	242	481554	j530	ut607	1965	1:15840
Draper loam, 1 to 3 percent slopes	DaB	222	481549	j52v	ut607	1965	1:15840
Timpanogos variant-Draper complex, 3 to 10 percent slopes	TDD	160	481661	j56g	ut607	1965	1:15840
Draper gravelly loam, gravelly subsoil variant, 1 to 3 percent slopes	DsB	153	481553	j52z	ut607	1965	1:15840
Draper sandy loam	Dr	715	482900	j6hf	ut612	1967	1:20000
Draper loam, sandy subsoil variant	Ds	1320	484587	j87v	ut640	1967	1:20000
Draper loam, 1 to 3 percent slopes	DrB	365	484586	j87t	ut640	1967	1:20000
Draper loam, 2 to 5 percent slopes	DrB	345	484738	j8dq	ut641	1971	1:24000

Map of Series Extent

Approximate geographic distribution of the DRAPER 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).