Soil Data Explorer - VARINA

Official Series Description

Lab Data Summary

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

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

Soil series sharing subgroup-level classification with VARINA, 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 VARINA 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
Varina sandy loam, 2 to 5 percent slopes	VaB	9303	614225	nm4q	al069	2002	1:24000
Varina loamy sand, 2 to 6 percent slopes	VnB	5010	112617	3s5t	nc069	1997	1:24000
Varina gravelly sandy loam, 2 to 6 percent slopes	VgB	1869	112616	3s5s	nc069	1997	1:24000
Varina loamy sand, 6 to 10 percent slopes	VnC	566	112618	3s5v	nc069	1997	1:24000
Varina loamy sand, 0 to 2 percent slopes	VrA	5075	113564	3t5c	nc101	1986	1:24000
Varina loamy sand, 2 to 6 percent slopes	VrB	2052	113565	3t5d	nc101	1986	1:24000
Varina loamy sand, 2 to 6 percent slopes	VaB	1615	116455	3x5m	nc195	1980	1:24000
Varina loamy sand, 0 to 2 percent slopes	VaA	349	116454	3x5l	nc195	1980	1:24000
Varina sandy loam, 0 to 2 percent slopes	VaA	7940	129780	4c1g	sc033	1976	1:20000
Varina sandy loam, 2 to 6 percent slopes	VaB	2790	129781	4c1h	sc033	1976	1:20000
Varina loamy fine sand, 2 to 6 percent slopes	VaB	3914	129986	4c83	sc041	1969	1:20000
Varina loamy fine sand, 0 to 2 percent slopes	VaA	1471	129985	4c82	sc041	1969	1:20000
Varina fine sandy loam, 0 to 2 percent slopes	VaA	1300	130591	4cwm	sc067	1975	1:20000
Varina fine sandy loam, 2 to 6 percent slopes	VaB	250	130592	4cwn	sc067	1975	1:20000
Varina fine sandy loam, 0 to 4 percent slopes	66B	478	118927	3zrc	va041	1974	1:15840
Bourne-Varina complex, 2 to 7 percent slopes	11B	1500	119071	3zx0	va085	1976	1:15840
Bourne-Varina complex, 7 to 15 percent slopes	11C	1100	119072	3zx1	va085	1976	1:15840
Varina-Bourne complex, 2 to 7 percent slopes	72B	920	119175	400c	va085	1976	1:15840
Faceville-Varina complex, 2 to 7 percent slopes	21B	5005	120401	418x	va177	1980	1:15840
Faceville-Varina complex, 7 to 15 percent slopes, eroded	21C2	2161	120402	418y	va177	1980	1:15840
Faceville-Varina complex, 7 to 15 percent slopes, moderately eroded	21C2	103	2376406	2krv8	va630	2008	1:12000
Faceville-Varina complex, 2 to 7 percent slopes	21B	82	2376405	2krv7	va630	2008	1:12000
Varina-Urban land complex, 0 to 4 percent slopes	42A	40	140056	4pqy	va760	2004	1:24000

Map of Series Extent

Approximate geographic distribution of the VARINA 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).