Soil Data Explorer - REGAN

Official Series Description

Lab Data Summary

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

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 REGAN, 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. ND-2012-02-07-01 | Adams County - September 1987

   Typical pattern of soils and underlying material in the Vebar-Flasher-Parshall association (Soil Survey of Adams County, North Dakota; September 1987).

2. ND-2012-02-08-09 | Hettinger County - May 1990

   Typical pattern of soils and underlying material in the Vebar-Parshall-Flasher association (Soil Survey of Hettinger County, North Dakota; May 1990).

Map Units

Map units containing REGAN 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
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	6231	2525764	1vzwj	nd001	1983	1:20000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	255	2707113	1vzwj	nd007	1998	1:24000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	1181	2563596	1vzwj	nd011	1969	1:20000
Regan silt loam, 0 to 2 percent slopes	Rg	7	992883	12b5h	nd011	1969	1:20000
Harriet, Regan, and Stirum soils, 0 to 2 percent slopes	2169	20376	341110	cfyk	nd013	1991	1:24000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	1515	2564080	2q2kr	nd013	1991	1:24000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	14035	2596821	2q2kr	nd015	1967	1:20000
Regan silty clay loam, 0 to 2 percent slopes, occasionally flooded	C62A	3614	2564144	2q3c1	nd015	1967	1:20000
Regan silt loam, 0 to 2 percent slopes, occasionally flooded	E4757A	891	2661733	2qz99	nd015	1967	1:20000
Regan silt loam, strongly saline, 0 to 1 percent slopes, occasionally flooded	E4755A	128	2661719	2q644	nd015	1967	1:20000
Harriet, Regan, and Stirum soils, 0 to 2 percent slopes	2169	8665	341310	cg50	nd023	1992	1:24000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	2646	2564253	2q2kr	nd023	1992	1:24000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	1196	2707264	1vzwj	nd025	1981	1:20000
Regan silt loam, 0 to 2 percent slopes, occasionally flooded	E4757A	868	2661822	2qz99	nd029	1979	1:20000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	27	2596834	2q2kr	nd029	1979	1:20000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	1014	2759753	1vzwj	nd033	1985	1:24000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	8473	2525897	1vzwj	nd037	1985	1:20000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	6798	2525830	1vzwj	nd041	1986	1:20000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	98	2596653	2q2kr	nd043	1985	1:20000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	5721	2596698	2q2kr	nd047	1992	1:20000
Regan silt loam, 0 to 2 percent slopes, occasionally flooded	E4757A	316	2661887	2qz99	nd047	1992	1:20000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	273	2661868	1vzwj	nd047	1992	1:20000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	1809	2596764	2q2kr	nd051	1992	1:24000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	5	2759725	1vzwj	nd053	2003	1:24000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	9238	2596868	2q2kr	nd055	1974	1:20000
Regan silt loam, strongly saline, 0 to 1 percent slopes, occasionally flooded	E4755A	1544	2699304	2q644	nd057	1976	1:20000
Regan silt loam, 0 to 2 percent slopes, occasionally flooded	E4757A	489	2699303	2qz99	nd057	1976	1:20000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	220	2567087	2q2kr	nd061	1988	1:24000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	79	2662523	1vzwj	nd061	1988	1:24000
Regan silt loam, strongly saline, 0 to 1 percent slopes, occasionally flooded	E4755A	2628	2526011	2q644	nd065	1971	1:20000
Regan silt loam, 0 to 2 percent slopes, occasionally flooded	E4757A	783	2526012	2qz99	nd065	1971	1:20000
Regan silt loam, very poorly drained, 0 to 1 percent slopes	E4761A	607	2526013	2q645	nd065	1971	1:20000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	8	2596871	2q2kr	nd083	1990	1:20000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	27	2758525	1vzwj	nd087	1974	1:20000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	1360	2716023	1vzwj	nd089	1965	1:20000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	1410	2596880	2q2kr	nd101	1967	1:20000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	1220	2596881	2q2kr	nd103	1966	1:12000
Harriet-Regan-Stirum complex, 0 to 2 percent slopes, occasionally flooded	C580A	2289	2596782	2q2kr	nd105	1993	1:24000
Regan silt loam, saline, 0 to 2 percent slopes, occasionally flooded	E4767A	18	2662576	1vzwj	nd105	1993	1:24000
Regan silt loam, 0 to 2 percent slopes	C063A	1364	2797915	2rrpk	sd021	1978	1:20000
Glenross-Regan fine sandy loams	Gr	2724	354197	cwkq	sd041	1972	1:24000
Regan silt loam, 0 to 2 percent slopes	C063A	600	2798589	2rrpk	sd045	1973	1:20000
Regan silt loam	Rn	27	354280	cwnd	sd045	1973	1:20000
Regan silt loam, 0 to 2 percent slopes	C063A	4973	2798756	2rrpk	sd089	1980	1:20000
Regan silt loam	Rt	351	355371	cxsl	sd107	1983	1:20000
Regan silt loam, 0 to 2 percent slopes	C063A	166	2799471	2rrpk	sd107	1983	1:20000
Regan silt loam, 0 to 2 percent slopes	C063A	1112	2800118	2rrpk	sd129	1975	1:20000
Regan silt loam	Re	474	354524	cwx8	sd129	1975	1:20000

Map of Series Extent

Approximate geographic distribution of the REGAN 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).