Soil Data Explorer - SAMPSON

Official Series Description

Lab Data Summary

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

Water Balance

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

Soil series sharing subgroup-level classification with SAMPSON, 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 SAMPSON 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
Sampson loam, 0 to 2 percent slopes	37	19662	94326	354s	co017	1985	1:24000
Satanta-Sampson, loams, 0 to 3 percent slopes, rarely flooded	78	33875	96879	37t4	co063	1996	1:24000
Sampson loam, 0 to 2 percent slopes, rarely flooded	75	16489	96878	37t3	co063	1996	1:24000
Sampson loam, 0 to 2 percent slopes, rarely flooded	179	14009	105260	3jjh	co073	2001	1:24000
Nunn-Sampson, rarely flooded, complex, 0 to 3 percent slopes	158	4980	105239	3jht	co073	2001	1:24000
Sampson loam, dry, 0 to 2 percent slopes, rarely flooded	180	988	105261	3jjj	co073	2001	1:24000
Nunn-Sampson, rarely flooded, complex, dry, 0 to 3 percent slopes	159	501	105240	3jhv	co073	2001	1:24000
Sampson loam	64	33226	95028	35wf	co121	1982	1:24000
Sampson loam	Sa	4590	498761	jr02	co622	1968	1:20000
Sampson loam, 0 to 3 percent slopes	78	7211	95442	369s	co625	1975	1:24000
Reventon-Sampson association, gently sloping	72	57384	375635	dlw8	nm632	1981	1:63360
Sampson loam, 0 to 5 percent slopes	79	14306	375642	dlwh	nm632	1981	1:63360
Sampson loam, moist, 0 to 8 percent slopes	80	1280	375644	dlwk	nm632	1981	1:63360
Sampson loam, moist, 8 to 15 percent slopes	81	325	375645	dlwl	nm632	1981	1:63360
Sampson-Dagflat complex, 3 to 12 percent slopes	57	2440	59327	1zqs	nm662	1979	1:48000
Sampson-Motoqua, moist families complex, 20 to 60 percent slopes	25	16163	512381	k65f	ut646		1:24000

Map of Series Extent

Approximate geographic distribution of the SAMPSON 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).