Soil Data Explorer - PRESTON

Official Series Description

Lab Data Summary

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

Soil series sharing subgroup-level classification with PRESTON, 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. ID-2010-08-30-04 | Franklin County Area - 2008

   Typical pattern of soils and underlying material in general soil map unit 4 (Welby-Kidman-Preston) (Soil Survey of Franklin County Area, Idaho; 2008).

2. UT-2012-03-22-03 | East Millard Area - June 1959

   East-west cross section in the northern part of the East Millard Area, near Lynndyl, showing position of soils on the landscape. 1—Mellor, Harding, Woodrow, and Lahontan soils. 2—Preston and Lynndyl soils. 3—Woodrow and Oasis soils. 4—Poganeab soils. 5—Preston and Taylorsflat soils and sand dunes. 6—Taylorsflat and Naples soils. 7—Canyon Mountains (Soil Survey of East Millard Area, UT; 1959).

Map Units

Map units containing PRESTON 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
Preston family-Rock outcrop complex, 30 to 60 percent slopes.	364	1065	471477	htly	ca732	1998	1:24000
Preston-Pass Canyon families association, 30 to 60 percent slopes.	343	212	471456	htl8	ca732	1998	1:24000
Risue-Abgese-Preston families association, 2 to 15 percent slopes.	152	9883	471568	htpw	ca763	1984	1:24000
Preston family, 1 to 15 percent slopes.	151	1459	471567	htpv	ca763	1984	1:24000
Pacifico-Preston families complex, 15 to 50 percent slopes	47	3930	465354	hm7f	ca776	1981	1:24000
Pacifico-Preston families complex, 30 to 50 percent slopes	DdF	14710	471628	htrt	ca777	1981	1:24000
Pacifico-Preston families complex, 2 to 30 percent slopes	DdDE	13865	471627	htrs	ca777	1981	1:24000
Preston loamy sand, 6 to 30 percent slopes	125	2160	485215	j8x3	id714	1997	1:24000
Preston-Xerorthents complex, 35 to 60 percent slopes	126	1716	485216	j8x4	id714	1997	1:24000
Preston fine sand, 2 to 6 percent slopes	124	1614	485214	j8x2	id714	1997	1:24000
Preston fine sand, 0 to 2 percent slopes	123	1513	485213	j8x1	id714	1997	1:24000
Kidman-Preston association, 2 to 12 percent slopes	62	1638	485658	j9cd	id715	1994	1:24000
PRESTON FINE SAND, 0 TO 10 PERCENT SLOPES	PtC	311	482804	j6db	ut603	1968	1:20000
Preston fine sand, 1 to 10 percent slopes	PxB	2247	481636	j55n	ut607	1965	1:15840
Preston fine sand, duned, 1 to 10 percent slopes	PyB	1940	481638	j55q	ut607	1965	1:15840
Preston fine sand, 10 to 20 percent slopes	PxE	479	481637	j55p	ut607	1965	1:15840
Preston sand, 1 to 10 percent slopes	PrD	2348	482963	j6kg	ut612	1967	1:20000
Knutsen-Preston complex, 10 to 30 percent slopes	KsF2	1783	482941	j6jr	ut612	1967	1:20000
Preston sand, 10 to 30 percent slopes	PrF	658	482964	j6kh	ut612	1967	1:20000
Preston sandy loam, 1 to 3 percent slopes	PsB	574	482965	j6kj	ut612	1967	1:20000
Kidman-Preston complex, 2 to 30 percent slopes	76	633	481872	j5f8	ut618	1995	1:24000
Preston fine sand, 2 to 30 percent slopes	102	422	481778	j5b7	ut618	1995	1:24000
Preston fine sand, 1 to 10 percent slopes	PuD	773	483365	j6zf	ut621	1966	1:20000
Preston loamy fine sand, high water table variant	Pv	285	483366	j6zg	ut621	1966	1:20000

Map of Series Extent

Approximate geographic distribution of the PRESTON 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).