Official Series Description


Lab Data Summary

Aggregate lab data for the ERAKATAK soil series. This aggregation is based on all pedons with a current taxon name of ERAKATAK, 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 ERAKATAK 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
1011N0354S2009OR013003Erakatak6Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties43.8222237,-119.8602982

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the ERAKATAK 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 ERAKATAK 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 ERAKATAK 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 ERAKATAK 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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Competing Series

Soil series competing with ERAKATAK 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 ERAKATAK 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 ERAKATAK 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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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 ERAKATAK, 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 ERAKATAK 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
Erakatak-Rugar-Tusel association17422210477118j0gxnv76319861:24000
Erakatak-Graley-Tusel association17441585477119j0gynv76319861:24000
Graley-Erakatak-Chen association17301535477113j0grnv76319861:24000
Reluctan-Erakatak-Rugar association17131015477109j0gmnv76319861:24000
Boost-Knotmer-Erakatak complex, 2 to 8 percent slopes332173332708672v4zcnv77719931:24000
Erakatak-Bullump-Rock outcrop association12021489475450hyr3nv77719931:24000
Erakatak-Ninemile-Harcany association1201548475449hyr2nv77719931:24000
Erakatak-Madeline association1200235475448hyr1nv77719931:24000
Erakatak-Ateron complex, 12 to 30 percent south slopes0853447734260672mlfor6181:24000
Tweener-Erakatak-Sintuf complex, 5 to 20 percent slopesP5402184734264191qkksor6181:24000
Erakatak-Ateron complex, 40 to 70 percent south slopes0951377334261112mkqor6181:24000
Ateron-Anatone-Erakatak complex, 12 to 50 percent south slopes3911230234260911353cor6181:24000
Observation-Bonnieview-Erakatak complex, 10 to 45 percent south slopes27997533432192tgbtor6181:24000
Observation-Merlin-Erakatak complex, 2 to 20 percent slopesQ570945034346602mlwor6181:24000
Erakatak-Tuscor-Anatone complex, 30 to 65 percent south slopes26693133426173132s3or6181:24000
Ateron-Erakatak complex, 10 to 40 percent south slopes380585434348112pytsor6181:24000
Ginserly-Erakatak complex, 30 to 65 percent south slopes232405934349041l9xsor6181:24000
Erakatak-Ateron complex, 0 to 12 percent slopes233154134374891l9xwor6181:24000
Erakatak-Merlin complex, 20 to 50 percent south slopes16611433426105tgc2or6181:24000
Erakatak-Merlin complex, 2 to 20 percent slopes293m10034347312mrlor6181:24000
Ateron-Rock outcrop-Erakatak complex, 30 to 70 south slopes475F37342606525xtsor6181:24000
Observation-Erakatak-Merlin complex, 2 to 20 percent slopes242173426397nk6yor6181:24000
Tweener-Erakatak-Sintuf complex, 5 to 20 percent slopes4303NO78233853871qkksor62620181:24000
Observation-Erakatak-Merlin complex, 2 to 20 percent slopes4340NO1083385424nk6yor62620181:24000
Observation-Erakatak-Merlin complex, 2 to 20 percent slopes24220113426393nk6yor6271:24000
Tweener-Erakatak-Sintuf complex, 5 to 20 percent slopesP540185134264131qkksor6271:24000
Erakatak-Merlin-Westbutte complex, 10 to 60 percent slopes9911732490980jgx2or62819971:24000
Erakatak-Ninemile-Hapgood association, 5 to 40 percent slopes1016921490461jgcbor62819971:24000
Erakatak extremely stony silty clay loam, 50 to 80 percent north slopes974368490978jgx0or62819971:24000
Merlin-Erakatak-Teguro complex, 2 to 20 percent slopes1982299490576jgh1or62819971:24000
Erakatak-Rock outcrop complex, 20 to 60 percent slopes100909490460jgc9or62819971:24000
Erakatak-Lambring-Rock outcrop complex, 20 to 60 percent north slopes98240490979jgx1or62819971:24000
Chen-Erakatak-Lambring complex, 15 to 50 percent slopes2471133116897571tqb9or63520061:24000
Erakatak-Rock outcrop complex, 20 to 60 percent south slopes298368316898071tqcxor63520061:24000
Erakatak-Rubble land complex, 30 to 70 percent slopes299171016898081tqcyor63520061:24000
Erakatak cobbly ashy clay loam, moist, 5 to 20 percent slopes29548716898041tqctor63520061:24000
Erakatak-Leevan-Rock outcrop complex, 20 to 50 percent slopes29733216898061tqcwor63520061:24000
Erakatak-Carryback complex, 15 to 30 percent slopes2968616898051tqcvor63520061:24000
Erakatak cobbly loam, 2 to 15 percent slopes79C5188489444jf9jor63619911:24000
Erakatak-Carryback complex, 15 to 30 percent slopes80E1307489447jf9mor63619911:24000
Chen-Erakatak complex, 2 to 15 percent slopes4321755728446482v4zkor64420211:24000
Boost-Knotmer-Erakatak complex, 2 to 8 percent slopes3321485028446422v4zcor64420211:24000
Erakatak-Perla-Rubble land complex, 20 to 60 percent slopes4501394629868422wbjvor64420211:24000
Erakatak-Boost-Arcia complex, 2 to 60 percent slopes4581346129868612x2m1or64420211:24000
Sharesnout-Erakatak complex, 30 to 60 percent slopes4571276629868642wbkwor64420211:24000
Bregar-Erakatak-Mahogee complex, 0 to 15 percent slopes461907429868542wz5hor64420211:24000
Robson-Knotmer-Erakatak complex, 2 to 50 percent slopes384804328446382v4z6or64420211:24000
Erakatak-Chen complex, 2 to 8 percent slopes475789531348302wz68or64420211:24000
Boost-Erakatak-Hackwood complex, 2 to 15 percent slopes430741828446462v4zhor64420211:24000
Erakatak-Chen-Bregar complex, 2 to 15 percent slopes445593729868522wz5for64420211:24000
Erakatak-Mahogee complex, 5 to 25 percent slopes444455429868512wz5cor64420211:24000
Erakatak-Leevan complex, 2 to 60 percent slopes452390629868432wbjxor64420211:24000
Erakatak-Arcia-Rock outcrop complex, 30 to 60 percent slopes451190929868462wbjwor64420211:24000
Sharesnout-Erakatak gravelly ashy loams, 15 to 50 percent slopes27234822190942dh4por64420211:24000
Erakatak-Lambring-Rubble land complex, 15 to 60 percent slopes50391581429468432wmbtor6451:24000
Bearspring-Klicker-Erakatak complex, 15 to 45 percent slopes902790827222722sf36or6451:24000
Ateron-Rock outcrop-Erakatak complex, 30 to 70 south slopes475F2715342180925xtsor6771:24000
Erakatak-Ateron complex, 12 to 30 percent south slopes085237734218342mlfor6771:24000
Ateron-Anatone-Erakatak complex, 12 to 50 percent south slopes39194434219801353cor6771:24000
Erakatak-Merlin complex, 20 to 50 percent south slopes1667003424456tgc2or6771:24000
Erakatak-Ateron complex, 40 to 70 percent south slopes09560034244812mkqor6771:24000
Erakatak-Tuscor-Anatone complex, 30 to 65 percent south slopes266623424818132s3or6771:24000

Map of Series Extent

Approximate geographic distribution of the ERAKATAK 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 .