Official Series Description


Lab Data Summary

Aggregate lab data for the GILLIAM soil series. This aggregation is based on all pedons with a current taxon name of GILLIAM, 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 GILLIAM 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
107BM07087042007MO087004GILLIAM4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties39.9048611,-95.01475
107BM07087122007MO087012GILLIAM4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties39.9042222,-94.9984444
107BM09165092009MO165009Gilliam4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties39.4900833,-95.0618611
115BM90151021990MO151002Gilliam3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.6880278,-91.677
115BM90151401990MO151040GILLIAM4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.6841111,-91.7388611
115BM07183032007MO183003GILLIAM4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.629,-90.7751944
115BM07183102007MO183010GILLIAM4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.7042222,-90.5788056

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the GILLIAM 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 GILLIAM 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 GILLIAM 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 GILLIAM 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 hills figure.

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

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Click the image to view it full size.

Competing Series

Soil series competing with GILLIAM 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 GILLIAM 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 GILLIAM 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 GILLIAM, 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 GILLIAM 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
Gilliam silt loam, 0 to 2 percent slopes, rarely flooded13517373725283812qmtkmo00519881:24000
Gilliam silt loam, 0 to 2 percent slopes, occasionally flooded13516547325283792qmtjmo03319881:24000
Gilliam silt loam, 0 to 2 percent slopes, occasionally flooded13516237625283772qmtjmo04719821:24000
Gilliam silt loam, 0 to 2 percent slopes, rarely flooded13517378025283802qmtkmo08719921:24000
Gilliam silty clay loam, 0 to 2 percent slopes, occasionally flooded135182333886669yrn7mo09519821:24000
Gilliam silt loam, 0 to 2 percent slopes, occasionally flooded1351627625283782qmtjmo09519821:24000
Gilliam silt loam, 0 to 2 percent slopes, occasionally flooded13516309025283762qmtjmo17719791:24000
Gilliam-Eudora silt loams, occasionally flooded84858522170992df2bne05319751:20000
Gilliam-Eudora silt loams, occasionally flooded8485422917109441vfcrne05520071:12000
Gilliam-Onawa complex, occasionally flooded848625617109431vfcqne05520071:12000
Gilliam-Onawa complex, occasionally flooded848657817110081vfftne15320071:12000
Gilliam-Eudora silt loams, occasionally flooded8485822173112df95ne17720001:12000

Map of Series Extent

Approximate geographic distribution of the GILLIAM 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 .