Soil Data Explorer - POALL

Official Series Description

Lab Data Summary

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

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

Competing Series

Soil series competing with POALL 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 POALL 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 POALL 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 POALL, 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 POALL 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
Poall very fine sandy loam, 12 to 40 percent south slopes	124D	9945	62090	22lx	or604	1988	1:24000
Poall very fine sandy loam, 2 to 12 percent slopes	122C	5765	62088	22lv	or604	1988	1:24000
Poall very fine sandy loam, 12 to 40 percent north slopes	123D	3295	62089	22lw	or604	1988	1:24000
Poall-Xeric Torriorthents complex, 12 to 40 percent south slopes	125D	841	62091	22ly	or604	1988	1:24000
Poall-Gumble complex, 2 to 20 percent slopes	262	11114	490668	jgl0	or628	1997	1:24000
Poall silt loam, 2 to 20 percent slopes	261	8407	490667	jgkz	or628	1997	1:24000
Waspo-Poall complex, 2 to 8 percent slopes	353	554	490784	jgpr	or628	1997	1:24000
Poall-Haar-Hanning complex, 2 to 50 percent slopes	3816	26806	2425730	2mf5c	or645		1:24000
Poall very fine sandy loam, 4 to 15 percent slopes	2942	21364	2482205	2p9y4	or645		1:24000
Poall-Risley-Gumble complex, 2 to 15 percent slopes	7029	17033	2722278	2sf3d	or645		1:24000
Farmell-Poall complex, 2 to 15 percent slopes	2938	9011	2425940	2mfd4	or645		1:24000
Poall-Tenmile complex, 4 to 25 percent slopes	3829	7638	2482206	2p9y5	or645		1:24000
Power-Poall complex, 2 to 25 percent slopes	4015	5783	3027031	2xf35	or645		1:24000
Poall very fine sandy loam, 25 to 60 percent north slopes	3803	3068	2425622	2mf1w	or645		1:24000
Poall-Beirman-Farmell complex, 0 to 8 percent slopes	2945	2197	2425728	2mf59	or645		1:24000
Poall very fine sandy loam, 0 to 4 percent slopes	2946	2030	2425885	2mfbc	or645		1:24000

Map of Series Extent

Approximate geographic distribution of the POALL 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).