Official Series Description


Lab Data Summary

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

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Pedons used in the lab summary:

MLRALab IDPedon IDTaxonnameCINSSL / NASIS ReportsLink To SoilWeb GMap
90B40A2027S1947WI005028Spencer4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties45.4597206,-92.0652771
90BUMN1725S1973MN1631725Spencer3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties44.9616547,-92.9214401
90B88P0202S1987WI005004Spencer1Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties45.544445,-91.8324966
90B90P0445S1989WI019045Spencer6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties44.9613876,-90.8405533

Water Balance

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

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Sibling Summary

Siblings are those soil series that occur together in map units, in this case with the SPENCER series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot , parsed OSD records and snapshot of SC database .

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Select annual climate data summaries for the SPENCER series and siblings. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data .

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Geomorphic description summaries for the SPENCER 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 .

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

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

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Competing Series

Soil series competing with SPENCER share the same family level classification in Soil Taxonomy. Source: parsed OSD records and snapshot of the SC database .

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Select annual climate data summaries for the SPENCER series and competing. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data .

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Geomorphic description summaries for the SPENCER 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 .

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Click the image to view it full size.

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

Click the image to view it full size.

Click the image to view it full size.

Soil series sharing subgroup-level classification with SPENCER, 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 .

Block Diagrams

No block diagrams are available.

Map Units

Map units containing SPENCER 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
Kingsley-Mahtomedi-Spencer complex, 8 to 15 percent slopes895C7024396903fb0bmn03719801:15840
Kingsley-Mahtomedi-Spencer complex, 3 to 8 percent slopes895B3040396902fb09mn03719801:15840
Spencer silt loam, 2 to 6 percent slopes150B1305396780f9wcmn03719801:15840
Spencer silt loam, 2 to 6 percent slopesSrB26482431343ggv9wi00519931:20000
Spencer silt loam, 6 to 12 percent slopes, erodedSrC21048431344ggvbwi00519931:20000
Spencer silt loam, 2 to 6 percent slopesSrB27222421595g4pvwi01719851:15840
Spencer silt loam, 6 to 12 percent slopes, erodedSrC23611421596g4pwwi01719851:15840
Spencer silt loam, gravelly substratum, 2 to 6 percent slopesSsB2061421598g4pywi01719851:15840
Spencer silt loam, gravelly substratum, 0 to 2 percent slopesSsA433421597g4pxwi01719851:15840
Spencer silt loam, 2 to 6 percent slopesSrB8707431927ghg4wi01919941:20000
Spencer silt loam, 6 to 12 percent slopesSrC502431928ghg5wi01919941:20000
Spencer silt loam, 2 to 6 percent slopes, moderately eroded, dissected836B262802518681n5bwwi03320031:15840
Spencer silt loam, 6 to 12 percent slopes, moderately eroded, dissected836C231912518682n5bywi03320031:15840
Spencer silt loam, dissected, 2 to 6 percent slopes, moderately eroded836B2254216931521ttvtwi09320061:12000
Spencer silt loam, dissected, 6 to 12 percent slopes, moderately eroded836C287516931531ttvvwi09320061:12000
Spencer silt loam, 1 to 6 percent slopes57B1103435206glvxwi11920021:12000

Map of Series Extent

Approximate geographic distribution of the SPENCER 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 .