Official Series Description


Lab Data Summary

Aggregate lab data for the GEPP soil series. This aggregation is based on all pedons with a current taxon name of GEPP, 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 GEPP 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
115BM87161181987MO161018Gepp3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.9672203,-92.3450012
115BM88105011988MO105001Gepp3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.9672203,-92.3450012
115BM88105121988MO105012Gepp3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.9672203,-92.3450012
115BM88105131988MO105013Gepp3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.9672203,-92.3450012
115BM90105181990MO105018Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.9672203,-92.3450012
115BM90105201990MO105020Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.9672203,-92.3450012
115BM91161301991MO161030Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.9672203,-92.3450012
115BM92161281992MO161028Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.9672203,-92.3450012
115BM93059101993MO059010Gepp2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.9672203,-92.3450012
115BM95051491995MO051088Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.4815569,-92.3955548
115BM95051521995MO051091Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.4500903,-92.2961145
115BM99613321999MO203032MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties38.9672241210938,-92.3450012207031
116A74RO061974AR12106Gepp2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.4787,-91.2656
116A78FL011978AR04901Gepp3Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.4042,-91.5947
116AM91105671991MO1052289Gepp2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.5908333,-92.2872222
116AM91105711991MO1052328Gepp2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.5497222,-92.3494444
116AM91105961991MO1052575Gepp2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.5763889,-92.3169444
116AM92105191991MO1052828Gepp2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.4916667,-92.3283333
116AM92105951992MO105361Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.7930556,-92.8533333
116AM93153021993MO153002Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.6664028,-92.4203139
116AM93153091993MO153009Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.5447083,-92.3351278
116AM93153191993MO153019Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.5227861,-92.4545472
116AM94153201994MO153050Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.6627778,-92.4211111
116AM94153401994MO153062Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.5870139,-92.5724444
116AM94613101994MO203010MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.2217139,-91.3457028
116AM94613221994MO203022MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.233175,-91.3589889
116AM94223291994MO223029Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.1552544,-90.2822342
116AM95055011995MO055001Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.9385754,-91.0680427
116AM95055021995MO055002Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.9379257,-91.0723836
116AM95119081995MO119008Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.59285,-94.3292806
116AM95613921995MO203092MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.2673417,-91.4143528
116AM96055151996MO055015Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.7402571,-91.1717714
116AM96153131996MO153126Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.5770222,-92.4958472
116AM96221171996MO221044Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.8645046,-90.9848444
116AM97091351997MO091196Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.9357944,-92.0847806
116AM97091361997MO091197Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.9357,-92.0844556
116AM97091421997MO091227Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties36.5172389,-91.6954444
116AM97613021997MO203002MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.2767083,-91.3872
116AM97613051997MO203005MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.2775139,-91.3932722
116AM97613061997MO203006MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.2771583,-91.3937333
116AM97613111997MO203011MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3661917,-91.3540861
116AM97613171997MO203017MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3395472,-91.2922778
116AM97613181997MO203018MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.36535,-91.3576389
116AM97613191997MO203019MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3655396,-91.3577499
116AM97613201997MO203020MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3390917,-91.29195
116AM97613221997MO203022MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3393472,-91.2908167
116AM97613241997MO203024MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.378525,-91.3459444
116AM97613251997MO203025MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3792472,-91.3459278
116AM97613261997MO203026MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3795472,-91.3447917
116AM97613471997MO203047MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.1631056,-91.1714556
116AM97613521997MO203052MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.1658306,-91.1722111
116AM97613691997MO203069MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3759472,-91.3888833
116AM97613711997MO203071MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3688667,-91.3917889
116AM97613761997MO203076MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3680056,-91.3934444
116AM97613801997MO203080MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3664111,-91.3954444
116AM99613441999MO203044MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3943722,-91.5667139
116AM99613631999MO203063MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.1317278,-91.2358917
116AM99221491999MO221252Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.9177194,-90.6968444
116AM01179212001MO179021Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.1419694,-90.8528194
116AM03613022003MO203002Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.1063028,-91.3348917
116AM08059042008MO059004Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.8425,-92.9253889
116CM92123241992MO123024MGepp2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3216667,-90.211113
116CM92123261992MO123026MGepp2Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.3222237,-90.3993912
116CM94123241994MO123024MGepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.4134712,-90.4569168
116CM94223741994MO223074Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.247776,-90.4777756
116CM98223521998MO223150Gepp4Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties37.1917992,-90.5047455

Water Balance

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

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

Competing Series

Soil series competing with GEPP 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 GEPP series and competing. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data .

Click the image to view it full size.

Geomorphic description summaries for the GEPP 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 .

Click the image to view it full size.

Click the image to view it full size.

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 GEPP, 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 GEPP 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
Gepp very gravelly silt loam, 8 to 20 percent slopes1860766280459030c9nar04919791:20000
Gepp very gravelly silt loam, 3 to 8 percent slopes1737078280457430c9kar04919791:20000
Gepp very gravelly silt loam, 12 to 30 percent slopes27469856574730c9lar06319801:20000
Gepp very gravelly silt loam, 8 to 12 percent slopes26379556574630c9par06319801:20000
Gepp very gravelly silt loam, 3 to 8 percent slopes25106756574530c9kar06319801:20000
Gepp very gravelly silt loam, 3 to 8 percent slopes171393285625230c9kar06519791:20000
Gepp very gravelly silt loam, 8 to 20 percent slopes18906285626830c9nar06519791:20000
Gepp very gravelly silt loam, 8 to 12 percent slopesGpD529056453530c9par07519731:20000
Gepp very gravelly silt loam, 12 to 20 percent slopesGpE444056453630c9mar07519731:20000
Gepp very gravelly silt loam, 8 to 12 percent slopes175576056448830c9par12119761:20000
Gepp-Doniphan association, rolling1931290564490lydcar12119761:20000
Gepp-Ventris association, rolling2018190564492lydfar12119761:20000
Doniphan-Gepp association, undulating1513140564486lyd7ar12119761:20000
Gepp very gravelly silt loam, 12 to 20 percent slopes181219056448930c9mar12119761:20000
Gepp-Ventris association, steep219540564493lydgar12119761:20000
Gepp very gravelly silt loam, 12 to 30 percent slopes156472956456230c9lar13519811:20000
Gepp very gravelly silt loam, 8 to 12 percent slopes145995956456130c9par13519811:20000
Gepp very gravelly silt loam, 3 to 8 percent slopes131468556456030c9kar13519811:20000
Gepp-Ventris complex, 8 to 20 percent slopes164476564563lygqar13519811:20000
Gepp-Ventris complex, 20 to 40 percent slopes173599564564lygrar13519811:20000
Clarksville-Gepp complex, 15 to 35 percent slopes, stony73400237025361232qpy7mo01519861:24000
Alred-Gepp complex, 8 to 15 percent slopes, stony73156845525016892vxqsmo01720041:24000
Clarksville-Gepp complex, 15 to 35 percent slopes, stony734004939025361252qpy7mo02919881:24000
Gepp-Goss-Bardley complex, 3 to 50 percent slopes735537225361772qpyrmo02919881:24000
Alred-Gepp complex, 8 to 15 percent slopes, stony73156653325016952vxqsmo03519881:24000
Rueter-Gepp complex, benches, 8 to 15 percent slopes733361825023482vxs5mo03519881:24000
Gepp-Arkana complex, 15 to 55 percent slopes, rocky73341725024562vxsbmo03519881:24000
Rueter-Gepp complex, 8 to 15 percent slopes, stony73340425024522vxs9mo03519881:24000
Gepp-Goss-Bardley complex, 3 to 50 percent slopes735532693225361752qpyrmo05919881:24000
Gepp-Goss complex, 3 to 15 percent slopes734431048625361462qpydmo05919881:24000
Clarksville-Gepp complex, 15 to 35 percent slopes, stony7340010725361262qpy7mo05919881:24000
Gepp-Arkana complex, 15 to 55 percent slopes, rocky7334120625024542vxsbmo06519711:24000
Rueter-Gepp complex, benches, 8 to 15 percent slopes733363925023452vxs5mo06519711:24000
Arkana-Gepp complex, 8 to 15 percent slopes, rocky, stony733391925023552vxs8mo06519711:24000
Rueter-Gepp complex, 8 to 15 percent slopes, stony73340625023592vxs9mo06519711:24000
Gepp very gravelly silt loam, 3 to 8 percent slopes734411315392572210290mo08519881:24000
Clarksville-Gepp complex, 15 to 35 percent slopes, stony7340093925361242qpy7mo08519881:24000
Gepp-Goss-Bardley complex, 3 to 50 percent slopes73553225361762qpyrmo08519881:24000
Alred-Gepp complex, 8 to 15 percent slopes, stony731567925016902vxqsmo09319881:24000
Arkana-Gepp complex, 8 to 15 percent slopes, rocky, stony733392925023562vxs8mo09319881:24000
Rueter-Gepp complex, 8 to 15 percent slopes, stony733402225023602vxs9mo09319881:24000
Rueter-Gepp complex, benches, 8 to 15 percent slopes73336225023462vxs5mo09319881:24000
Gepp-Goss complex, 3 to 15 percent slopes7344388725361452qpydmo10519971:24000
Alred-Gepp complex, 8 to 15 percent slopes, stony73156186825016912vxqsmo12319991:24000
Alred-Gepp complex, 8 to 15 percent slopes, stony73156225016922vxqsmo15719831:24000
Clarksville-Gepp complex, 15 to 35 percent slopes, stony734007112525361222qpy7mo16919841:24000
Gepp-Bardley-Clarksville very gravelly silt loams, 15 to 35 percent slopes734421780897569611r92mo16919841:24000
Gepp-Rock outcrop complex, 35 to 60 percent slopes73444509097569711r93mo16919841:24000
Rueter-Gepp complex, 8 to 15 percent slopes, stony73340867825024512vxs9mo17920041:24000
Alred-Gepp complex, 8 to 15 percent slopes, stony73156699825016932vxqsmo17920041:24000
Rueter-Gepp complex, benches, 8 to 15 percent slopes73336642425023472vxs5mo17920041:24000
Arkana-Gepp complex, 8 to 15 percent slopes, rocky, stony73339166125023572vxs8mo17920041:24000
Gepp-Arkana complex, 15 to 55 percent slopes, rocky7334168125024552vxsbmo17920041:24000
Gepp-Arkana complex, 15 to 55 percent slopes, rocky733412551425024572vxsbmo20320041:24000
Rueter-Gepp complex, 8 to 15 percent slopes, stony73340687325024532vxs9mo20320041:24000
Arkana-Gepp complex, 8 to 15 percent slopes, rocky, stony73339485025023582vxs8mo20320041:24000
Rueter-Gepp complex, benches, 8 to 15 percent slopes73336438725023492vxs5mo20320041:24000
Alred-Gepp complex, 8 to 15 percent slopes, stony73156733825016942vxqsmo22320041:24000

Map of Series Extent

Approximate geographic distribution of the GEPP 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 .