Official Series Description


Lab Data Summary

Aggregate lab data for the TAPPAN soil series. This aggregation is based on all pedons with a current taxon name of TAPPAN, 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 TAPPAN 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
9940A1956S1974MI063001Tappan7Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.7128722,-83.3453222
9981P0786S1981MI157003TAPPAN6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.5241699,-83.6462708
9909N1083S2009MI063001Tappan3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.8128333,-83.3218556

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the TAPPAN 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 TAPPAN 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 TAPPAN 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 TAPPAN 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 TAPPAN 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 TAPPAN series and competing. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data .

There are insufficient data to create the annual climate figure.

Geomorphic description summaries for the TAPPAN 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 .

There are insufficient data to create the 2D hillslope position figure.

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.

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

Soil series sharing subgroup-level classification with TAPPAN, 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

Click a link below to display the diagram. Note that these diagrams may be from multiple survey areas.

  1. MI-2012-02-06-51 | Saginaw County - January 1994

    Pattern of soils and parent material in the Tappan-Londo-Poseyville association (Soil Survey of Saginaw County, Michigan; January 1994).

  2. MI-2012-02-06-52 | Tuscola County - September 1986

    Pattern of soils and parent material in the Guelph-Londo-Tappan association (Soil Survey of Tuscola County, Michigan; September 1986).

Map Units

Map units containing TAPPAN 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
Tappan loam, 0 to 1 percent slopesTp124425078342v14tmi01119641:20000
Corunna-Tappan sandy loamsCt182507824682ymi01119641:20000
Tappan-Poseyville complex, 0 to 3 percent slopesTrA42507835683kmi01119641:20000
Tappan loam, 0 to 1 percent slopes23811291865292v14tmi01719781:20000
Tappan-Poseyville complex, 0 to 3 percent slopes58A19260186544683kmi01719781:20000
Corunna-Tappan sandy loams127588186525682ymi01719781:20000
Urban land-Tappan complex523883186538683cmi01719781:20000
Tappan-Londo-Poseyville complex, 0 to 3 percent slopes108A148725079956887mi01719781:20000
Tappan-Londo loams, 0 to 3 percent slopes102A18225079902whw4mi01719781:20000
Tappan loam, 0 to 1 percent slopesTn19025078482v14tmi05119661:15840
Tappan loam, 0 to 1 percent slopes18224811867722v14tmi06319781:20000
Tappan-Londo loams, 0 to 3 percent slopes119A15225081762whw4mi06319781:20000
Tappan-Avoca complex, 0 to 3 percent slopes120A282508177693zmi06319781:20000
Tappan loam, 0 to 1 percent slopesTn78825079782v14tmi11119761:15840
Tappan-Poseyville complex, 0 to 3 percent slopesTpA1892507979683kmi11119761:15840
Tappan-Londo loams, 0 to 3 percent slopes160A3459926736262whw4mi14519911:15840
Tappan loam, 0 to 1 percent slopes19303081866642v14tmi14519911:15840
Tappan-Londo-Poseyville complex, 0 to 3 percent slopes68A118011866896887mi14519911:15840
Tappan-Poseyville complex, 0 to 3 percent slopes61A36531866846882mi14519911:15840
Urban land-Tappan complex, 0 to 3 percent slopes63A32051866866884mi14519911:15840
Tappan-Avoca complex, 0 to 3 percent slopes161A1272673628693zmi14519911:15840
Tappan mucky loam, 0 to 2 percent slopesTbA016271884076b1nmi15119551:15840
Tappan loam, 0 to 1 percent slopesTaA010851884062v14tmi15119551:15840
Tappan-Londo loams, 0 to 3 percent slopes8A803701875242whw4mi15719841:15840
Tappan loam, 0 to 1 percent slopes36435111874932v14tmi15719841:15840
Tappan-Avoca complex, 0 to 3 percent slopes6A16880187518693zmi15719841:15840
Tappan-Lenawee variant complex64436187513693tmi15719841:15840
Tappan-Poseyville complex, 0 to 3 percent slopes154A36826736356882mi15719841:15840

Map of Series Extent

Approximate geographic distribution of the TAPPAN 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 .