Official Series Description


Lab Data Summary

Aggregate lab data for the KILLDUFF soil series. This aggregation is based on all pedons with a current taxon name of KILLDUFF, 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 KILLDUFF 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
10485P03491985IA0830011Killduff5Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties42.2527771,-93.121109
10485P035085IA0830012Killduff5Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties42.2525063,-93.1204834
10486P035885IA0830035Killduff5Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties42.2455559,-93.1233368
108C85P04191984IA1630022Killduff5Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties41.6347237,-90.4791641
108C86P03721985IA0990031Killduff5Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties41.8277779,-92.8888855
108C85P05351985IA1270022Killduff5Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties42.0333328,-93.1083298
108C86P03761985IA1270032Killduff5Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties42.0416679,-93.1083298
108C88P06041987IA099005Killduff6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties41.8266756,-92.9047349
108C88P06061987IA099007Killduff6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties41.8256286,-92.8937388
108C87P03581987IA1270023Killduff5Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties42.0330544,-93.1138916
108C88P05961987IA127003Killduff6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties42.0405939,-93.1088499

Water Balance

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

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

Competing Series

Soil series competing with KILLDUFF 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 KILLDUFF 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 KILLDUFF 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 KILLDUFF, 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. IA-2011-05-31-48 | Hardin County - 1985

    Pattern of soils and parent material in the Tama-Colo association (Soil Survey of Hardin County, Iowa; 1985).

Map Units

Map units containing KILLDUFF 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
Killduff silty clay loam, 5 to 9 percent slopes, eroded20C223394066382thlsia08319821:15840
Killduff silty clay loam, 9 to 14 percent slopes, severely eroded20D322574066392thlwia08319821:15840
Killduff silty clay loam, 14 to 18 percent slopes, severely eroded20E34514066402thlyia08319821:15840
Killduff silty clay loam, 5 to 9 percent slopes, eroded20C2140344076302thlsia09919751:15840
Killduff silty clay loam, 9 to 14 percent slopes, eroded20D2140134076312thlvia09919751:15840
Killduff silty clay loam, 14 to 18 percent slopes, eroded20E26554076322thlxia09919751:15840
Killduff silty clay loam, 9 to 14 percent slopes, eroded20D2212834094482thlvia12719781:15840
Killduff silty clay loam, 5 to 9 percent slopes, eroded20C2109284094472thlsia12719781:15840
Killduff silty clay loam, 9 to 14 percent slopes, severely eroded20D332004094492thlwia12719781:15840
Killduff silty clay loam, 14 to 18 percent slopes, severely eroded20E314284094512thlyia12719781:15840
Killduff silty clay loam, 14 to 18 percent slopes, eroded20E212934094502thlxia12719781:15840
Killduff silty clay loam, 5 to 9 percent slopes, eroded20C2112394105602thlsia15719781:15840
Killduff silty clay loam, 9 to 14 percent slopes, eroded20D260774105612thlvia15719781:15840
Killduff silty clay loam, 5 to 9 percent slopes20C11464105592thlria15719781:15840
Killduff silty clay loam, 9 to 14 percent slopes, severely eroded20D343324109372thlwia16319891:15840
Killduff silty clay loam, 5 to 9 percent slopes, eroded20C231074109342thlsia16319891:15840
Killduff silty clay loam, 9 to 14 percent slopes, eroded20D219284109362thlvia16319891:15840
Killduff silty clay loam, 5 to 9 percent slopes, severely eroded20C38544109352thltia16319891:15840
Killduff silty clay loam, 9 to 14 percent slopes, severely eroded20D37974114262thlwia17119891:15840
Killduff silty clay loam, 9 to 14 percent slopes, eroded20D27734114252thlvia17119891:15840
Killduff silty clay loam, 5 to 9 percent slopes, eroded20C22684114232thlsia17119891:15840
Killduff silty clay loam, 14 to 18 percent slopes, eroded20E22254114272thlxia17119891:15840
Killduff silty clay loam, 14 to 18 percent slopes, severely eroded20E31944114282thlyia17119891:15840

Map of Series Extent

Approximate geographic distribution of the KILLDUFF 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 .