Official Series Description


Lab Data Summary

Aggregate lab data for the HAWKINSPEAK soil series. This aggregation is based on all pedons with a current taxon name of HAWKINSPEAK, 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 HAWKINSPEAK 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 HAWKINSPEAK 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 HAWKINSPEAK 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 HAWKINSPEAK 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 HAWKINSPEAK 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 terrace figure.

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

Competing Series

Soil series competing with HAWKINSPEAK 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 HAWKINSPEAK 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 HAWKINSPEAK 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.

Click the image to view it full size.

Click the image to view it full size.

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

Soil series sharing subgroup-level classification with HAWKINSPEAK, 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. CA-2010-08-30-01 | Tahoe Basin Area, California and Nevada - 2007

    Representative diagram of the Meiss Meadow area (not to scale). The Sky-Callat general soil map unit is in this area (Soil Survey of the Tahoe Basin Area, California and Nevada; 2007).

Map Units

Map units containing HAWKINSPEAK 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
Hawkinspeak-Angelwhine association205384424248412md7pca68620101:24000
Hawkinspeak-Hawkridge association205212224248402md7nca68620101:24000
Hawkinspeak-Angelwhine-Hawkridge association20505824248382md7lca68620101:24000
Hawkinspeak-Thiefridge-Angelwhine association20513124248392md7mca68620101:24000
Lithnip-Meiss-Hawkinspeak association, 30 to 75 percent slopes9131236116520311sg2bca69320061:24000
Lithnip-Hawkinspeak-Rock outcrop complex, 30 to 75 percent slopes100ty4316115970011qlt5ca72419851:24000
Lithnip-Meiss-Hawkinspeak association, 30 to 75 percent slopes103ty278015970051qlt9ca72419851:24000
Hawkinspeak-Thiefridge-Angelwhine association23019335495421jmjbca72920061:24000
Lithnip-Hawkinspeak-Rock outcrop complex, 30 to 75 percent slopes10012953495419jmj8ca72920061:24000
Sweetmount-Hawkinspeak-Hawkridge association7706185102993413kqpca72920061:24000
Hawkridge-Hawkinspeak association2605782493234jk7sca72920061:24000
Hawkridge-Lithnip-Hawkinspeak association2615492493239jk7yca72920061:24000
Hawkinspeak-Hawkridge association2324855626024p0fbca72920061:24000
Hawkinspeak-Angelwhine-Hawkridge association2333301779349v4z9ca72920061:24000
Hawkinspeak association2312856626023p0f9ca72920061:24000
Angelwhine-Hawkinspeak-Hawkridge association5702393779370v4zzca72920061:24000
Hawkinspeak-Angelwhine association235202913860011hj7qca72920061:24000
Hawkinspeak-Thiefridge association234178213859991hj7nca72920061:24000
Lithnip-Meiss-Hawkinspeak association103168515417821nrbxca72920061:24000
Lithnip-Hawkinspeak-Rock outcrop complex, 30 to 75 percent slopes100ty18171670092jmj8ca73119811:24000
Hawkridge-Hawkinspeak association260ty771670101jk7sca73119811:24000
Hawkinspeak-Thiefridge association234ty4622293362dtt2ca73219981:24000
Hawkinspeak-Hawkridge association232ty4622293342dtt0ca73219981:24000
Hawkinspeak-Angelwhine association2053cb3025354542md7pca73219981:24000
Hawkinspeak-Angelwhine-Hawkridge association233ty222293352dtt1ca73219981:24000

Map of Series Extent

Approximate geographic distribution of the HAWKINSPEAK 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 .