Soil Data Explorer - POMROY

Official Series Description

Lab Data Summary

Aggregate lab data for the POMROY soil series. This aggregation is based on all pedons with a current taxon name of POMROY, 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 POMROY were used in the calculation. Source: KSSL snapshot (updated 2020-03-13). Methods used to assemble the KSSL snapshot used by SoilWeb / SDE

Pedons used in the lab summary:

MLRA	Lab ID	Pedon ID	Taxonname	CI	NSSL / NASIS Reports	Link To SoilWeb GMap
91A	UMN1685	S1973MN1451685	Pomroy	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	45.6134491,-94.2074203

Water Balance

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

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

Soil series sharing subgroup-level classification with POMROY, 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. MN-2010-09-08-05 | Cass County - 1997

   Typical pattern of soils and parent material in the Wabedo-Flak-Nokay general soil map unit (Soil Survey of Cass County, Minnesota; 1997).

Map Units

Map units containing POMROY 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
Pomroy loamy fine sand, 6 to 12 percent slopes	119C	519	432812	gjcp	mn001	1996	1:20000
Pomroy loamy fine sand, 6 to 12 percent slopes	C53C	284	733190	sly9	mn009	2007	1:12000
Pomroy loamy sand, 3 to 8 percent slopes	119B	10518	397696	fbtx	mn021	1993	1:20000
Pomroy loamy sand, 3 to 8 percent slopes, very stony	750B	3015	397768	fbx7	mn021	1993	1:20000
Pomroy loamy sand, 8 to 15 percent slopes	119C	1562	397697	fbty	mn021	1993	1:20000
Pomroy loamy sand, 8 to 15 percent slopes, very stony	750C	647	397769	fbx8	mn021	1993	1:20000
Pomroy loamy fine sand, 1 to 6 percent slopes	119B	2098	396542	f9mp	mn025	1990	1:15840
Pomroy loamy fine sand, 6 to 12 percent slopes	119C	249	396543	f9mq	mn025	1990	1:15840
Pomroy-Oesterle-Scott Lake complex, Stewart Lake Moraine, 2 to 8 percent slopes	2-33B	8776	2732710	2slp9	mn035	2009	1:24000
Pomroy loamy sand, Rainy till phase, 1 to 6 percent slopes	C53B	3394	2732673	2slmv	mn035	2009	1:24000
Pomroy-Bushville complex, Stewart Lake Moraine, 1 to 6 percent slopes	2-31B	2076	2732708	2slp7	mn035	2009	1:24000
Pomroy loamy sand, Rainy till phase, 6 to 15 percent slopes	3-9D	281	2732723	2slpr	mn035	2009	1:24000
Pomroy loamy fine sand, 2 to 6 percent slopes	C53B	647	1673494	1t5dp	mn065	2006	1:12000
Pomroy loamy fine sand, 6 to 12 percent slopes	C53C	42	1673495	1t5dq	mn065	2006	1:12000
Pomroy loamy fine sand, 2 to 6 percent slopes	C53B	144	1676395	1t8f8	mn095	2006	1:12000
Pomroy loamy fine sand, 6 to 12 percent slopes	C53C	6	1676396	1t8f9	mn095	2006	1:12000
Pomroy loamy fine sand, 1 to 6 percent slopes	119B	28262	400337	ffl3	mn097	1987	1:20000
Pomroy loamy fine sand, 6 to 12 percent slopes	119C	3217	400338	ffl4	mn097	1987	1:20000
Pomroy fine sand, 1 to 6 percent slopes	119B	1387	428074	gcfv	mn145	1980	1:15840
Pomroy-Fremstadt-Fremstadt, stony, complex, 1 to 6 percent slopes	3510B	7048	448647	h1vh	wi013	2004	1:12000
Pomroy-Fremstadt-Fremstadt, stony, complex, 6 to 15 percent slopes	3510C	4121	448653	h1vp	wi013	2004	1:12000
Fremstadt, stony-Pomroy complex, 15 to 30 percent slopes	669D	3032	448654	h1vq	wi013	2004	1:12000
Pomroy-Fremstadt-Fremstadt, stony complex, 6 to 15 percent slopes	3510C	838	781302	v709	wi031	2005	1:12000
Pomroy-Fremstadt-Fremstadt, stony complex, 1 to 6 percent slopes	3510B	614	781301	v708	wi031	2005	1:12000
Fremstadt, stony-Pomroy complex, 15 to 30 percent slopes	669D	109	781303	v70b	wi031	2005	1:12000
Fremstadt, stony-Pomroy complex, 15 to 30 percent slopes	669D	230	2487060	2pgzr	wi095	1978	1:15840
Pomroy-Fremstadt complex, 1 to 6 percent slopes, stony	3510B	75	2427644	2mh53	wi095	1978	1:15840
Pomroy-Fremstadt complex, 6 to 15 percent slopes, stony	3510C	8	2427648	2mh57	wi095	1978	1:15840

Map of Series Extent

Approximate geographic distribution of the POMROY 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).