Soil Data Explorer - PEP

Official Series Description

Lab Data Summary

Aggregate lab data for the PEP soil series. This aggregation is based on all pedons with a current taxon name of PEP, 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 PEP 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 PEP 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 PEP 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 PEP 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 PEP 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 PEP 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 PEP 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 PEP 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 PEP, 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. TX-2010-11-02-22 | Carson County -

   General relationship of the soils in Carson County (Soil Survey of Carson County, Texas).

2. TX-2010-11-02-23 | Carson County -

   Estacado-Pep (Soil Survey of Carson County, Texas).

3. TX-2010-11-02-25 | Carson County -

   Pantex (Soil Survey of Carson County, Texas).

4. TX-2010-11-02-26 | Carson County -

   A representative pattern of soils in one of the playas associated with the Pullman soil (Soil Survey of Carson County, Texas).

5. TX-2010-11-02-27 | Carson County -

   Pullman (Soil Survey of Carson County, Texas).

6. TX-2010-11-02-37 | Deaf Smith County - 2007

   Typical pattern of soils in the Pullman general soil map unit (Soil Survey of Deaf Smith County, Texas; 2007).

7. TX-2010-11-02-38 | Deaf Smith County - 2007

   Typical pattern of soils in the Pep-Estacado general soil map unit (Soil Survey of Deaf Smith County, Texas; 2007).

8. TX-2010-11-02-39 | Deaf Smith County - 2007

   Typical pattern of soils in the Olton general soil map unit (Soil Survey of Deaf Smith County, Texas; 2007).

9. TX-2010-11-02-40 | Deaf Smith County - 2007

   Typical pattern of soils in the Pep-Plemons general soil map unit (Soil Survey of Deaf Smith County, Texas; 2007).

10. TX-2010-11-02-41 | Deaf Smith County - 2007

    Typical pattern of soils in the Pep-Berda-Bippus general soil map unit (Soil Survey of Deaf Smith County, Texas; 2007).

11. TX-2010-11-02-43 | Deaf Smith County - 2007

    Typical pattern of soils in the Plemons-Potter-Mobeetie general soil map unit (Soil Survey of Deaf Smith County, Texas; 2007).

12. TX-2010-11-02-44 | Deaf Smith County - 2007

    Typical pattern of soils in the Estacado-Pullman general soil map unit (Soil Survey of Deaf Smith County, Texas; 2007).

13. TX-2010-11-02-45 | Deaf Smith County - 2007

    Typical pattern of soils in the Kimberson-Pep-Potter general soil map unit (Soil Survey of Deaf Smith County, Texas; 2007).

14. TX-2010-11-03-30 | Hockley County -

    Arvana-Pep-Kimberson (Soil Survey of Hockely County, Texas).

15. TX-2010-11-03-68 | Lynn County - 2008

    Pattern of soils and underlying materials in the Estacado-Pep general soil map unit (Soil Survey of Lynn County, Texas; 2008).

Map Units

Map units containing PEP 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
Pep very fine sandy loam, 1 to 3 percent slopes	PqB	5796	2441677	1idxt	nm041	2014	1:24000
Pep loam, 0 to 1 percent slopes	PeA	259	1547914	f5sz	nm041	2014	1:24000
Pep loam, 1 to 3 percent slopes	PeB	94	2606859	f5t0	nm041	2014	1:24000
Pep loam, 0 to 1 percent slopes	PeA	24601	377736	f5sz	nm669	2005	1:24000
Pep loam, 1 to 3 percent slopes	PeB	18969	377737	f5t0	nm669	2005	1:24000
Pep clay loam, 1 to 3 percent slopes	PcB	1293	1651135	db3c	nm669	2005	1:24000
Pep clay loam, 0 to 1 percent slopes	PcA	18	1651134	db3d	nm669	2005	1:24000
Estacado and Pep loams, 0 to 1 percent slopes	EPA	11550	2962306	f5sb	tx033	1970	1:24000
Pep loam, 1 to 3 percent slopes	PeB	113	2962311	f5t0	tx033	1970	1:24000
Pep clay loam, 3 to 5 percent slopes	PcC	9151	393683	f6nh	tx065	2000	1:24000
Pep clay loam, 1 to 3 percent slopes	PcB	2235	393682	db3c	tx065	2000	1:24000
Pep-Estacado loams, 3 to 5 percent slopes	MeC	8785	363769	d6jh	tx069	1969	1:20000
Pep clay loam, 3 to 5 percent slopes	PcC	39	2428289	f6nh	tx069	1969	1:20000
Pep loam, 0 to 1 percent slopes	PeA	395	2931531	f5sz	tx079	1962	1:20000
Estacado and Pep loams, 0 to 1 percent slopes	EPA	9029	393607	f5sb	tx115	2004	1:24000
Pep loam, 1 to 3 percent slopes	PeB	2980	393626	f5t0	tx115	2004	1:24000
Pep loam, 0 to 1 percent slopes	PeA	84	393627	f5sz	tx115	2004	1:24000
Pep clay loam, 1 to 3 percent slopes	PcB	138515	378061	db3c	tx117	1999	1:24000
Pep clay loam, 0 to 1 percent slopes	PcA	29842	378060	db3d	tx117	1999	1:24000
Pep clay loam, 3 to 5 percent slopes	PcC	11888	393773	f6nh	tx117	1999	1:24000
Berda-Pep-Potter association, rolling	BpF	11628	365213	d812	tx129	1975	1:24000
Pep clay loam, 3 to 5 percent slopes	PcC	2158	365172	f6nh	tx129	1975	1:24000
Pep loam, 0 to 1 percent slopes	PeA	12530	378988	f5sz	tx219	1999	1:24000
Pep loam, 1 to 3 percent slopes	PeB	4009	378989	f5t0	tx219	1999	1:24000
Estacado and Pep loams, 0 to 1 percent slopes	EPA	22518	379037	f5sb	tx305	1999	1:24000
Pep loam, 1 to 3 percent slopes	PeB	2401	379055	f5t0	tx305	1999	1:24000
Pep loam, 0 to 1 percent slopes	PeA	1552	379054	f5sz	tx305	1999	1:24000
Pep clay loam, 3 to 5 percent slopes	PcC	3651	3124140	f6nh	tx359	1978	1:24000
Pep clay loam, breaks, 3 to 5 percent slopes	PbC	2412	3124186	2yk81	tx359	1978	1:24000
Pep clay loam, 1 to 3 percent slopes	PcB	684	3124193	db3c	tx359	1978	1:24000
Pep clay loam, 3 to 5 percent slopes	PcC	809	2599149	f6nh	tx369	1973	1:24000
Pep clay loam, 0 to 1 percent slopes	PcA	680	2599114	db3d	tx369	1973	1:24000
Pep clay loam, 1 to 3 percent slopes	PcB	558	2599113	db3c	tx369	1973	1:24000
Pep loam, 3 to 5 percent slopes	PeC	526	2599156	20byl	tx369	1973	1:24000
Pep loam, 1 to 3 percent slopes	PeB	84	2599132	f5t0	tx369	1973	1:24000
Pep clay loam, 3 to 5 percent slopes	PcC	2469	3124253	f6nh	tx375	1974	1:24000
Pep-Urban land complex	PbU	2214	3124258	2mhvj	tx375	1974	1:24000
Pep clay loam, breaks, 3 to 5 percent slopes	PbC	1850	3124277	2yk81	tx375	1974	1:24000
Pep clay loam, 1 to 3 percent slopes	PcB	29	3124303	db3c	tx375	1974	1:24000
Pep clay loam, 3 to 5 percent slopes	PcC	10491	630097	f6nh	tx381	1999	1:24000
Pep clay loam, 1 to 3 percent slopes	PcB	5046	394472	db3c	tx381	1999	1:24000
Pep clay loam, 0 to 1 percent slopes	PcA	2042	394471	db3d	tx381	1999	1:24000
Pep-Urban land complex	PcU	281	643365	plgq	tx381	1999	1:24000
Paloduro-Pep-Potter association, rolling	PpPF	64639	371531	dglw	tx393	1979	1:24000
Pep-Paloduro association, rolling	PePF	35659	371514	dglb	tx393	1979	1:24000
Pep clay loam, 3 to 5 percent slopes	PcC	29383	371513	f6nh	tx393	1979	1:24000
Mansker and Pep soils, 3 to 5 percent slopes	MeC	5635	372339	dhfy	tx437	1970	1:20000
Pep clay loam, 3 to 5 percent slopes	PcC	290	2428340	f6nh	tx437	1970	1:20000
Pep loam, 0 to 1 percent slopes	PeA	5067	372560	f5sz	tx445	1999	1:24000
Pep loam, 1 to 3 percent slopes	PeB	4183	372561	f5t0	tx445	1999	1:24000
Pep loam, 0 to 1 percent slopes	PeA	214	2931489	f5sz	tx501	1962	1:31680

Map of Series Extent

Approximate geographic distribution of the PEP 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).