Official Series Description


Lab Data Summary

Aggregate lab data for the ROCKO soil series. This aggregation is based on all pedons with a current taxon name of ROCKO, 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 ROCKO were used in the calculation. Source: KSSL snapshot . Methods used to assemble the KSSL snapshot used by SoilWeb / SDE

There are insufficient data to create the lab data summary figure.


Water Balance

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

Click the image to view it full size.

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 ROCKO, 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. TX-2010-11-02-11 | Brewster County -

    Brewster-Rock Outcrop-Liv and Musquiz-Murray-Boracho-Espy

Map Units

Map units containing ROCKO 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
Rocko, very bouldery-Rock outcrop complex, 15 to 45 percent slopes32F1524037832lpbdmt60520071:24000
Rocko, very bouldery-Rock outcrop complex, 15 to 45 percent slopes32F4042797876vs7ymt61220111:24000
Rubble land-Rocko, rubbly-Rock outcrop complex, 15 to 45 percent slopes132F205022295072dtzlmt61220111:24000
Rocko, stony-Poin, extremely stony-Rock outcrop complex, 15 to 50 percent slopes332F188924286372mj64mt61220111:24000
Cheadle, rubbly-Rock outcrop-Rocko, rubbly complex, 8 to 35 percent slopes132E58322295062dtzkmt61220111:24000
Rocko, stony-Poin, extremely stony-Rock outcrop complex, 15 to 50 percent slopes332F52425416352mj64mt61420121:24000
Rocko cobbly loam, 15 to 45 percent slopes, stony393E274515545256rlmt62219971:24000
Rocko, stony-Copenhaver, extremely stony complex, 35 to 60 percent slopes894F484155763572mmt62219971:24000
Rocko-Rock outcrop-Sebud complex, 35 to 70 percent slopes, very bouldery521G54224862232pg3rmt62420211:24000
Rocko-Adel complex, 15 to 45 percent slopes415F10311499795121mt63920001:24000
Booneville-Tiban, extremely bouldery-Rocko, extremely stony, complex, 15 to 60 percent slopes5618F302215645957t2mt6691:24000
Rocko-Danaher-Mollet loams, 4 to 35 percent slopes5528E2088699257rgmpmt6691:24000
Southeast Mountains Sideslopes, Douglas Fir-Rock Outcrop Complex76412882554713532wwy6351:24000
Sedimentary Sideslopes, Big Sagebrush-Tall Forb Complex36223996151862530swy66219981:24000
Southeast Mountains Sideslopes, Douglas Fir-Rock Outcrop Complex76411657151927532wwy66219981:24000
Southeast Mountains Sideslopes, Douglas Fir-Rock Outcrop Complex76412662925088532wwy71319861:24000

Map of Series Extent

Approximate geographic distribution of the ROCKO 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 .