Soil Data Explorer - HARDHART

Official Series Description

Lab Data Summary

Aggregate lab data for the HARDHART soil series. This aggregation is based on all pedons with a current taxon name of HARDHART, 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 HARDHART were used in the calculation. Source: KSSL snapshot (updated 2020-03-18). 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 HARDHART 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.

Sibling Summary

Siblings are those soil series that occur together in map units, in this case with the HARDHART series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-02-21), parsed OSD records (updated 2023-10-06) and snapshot of SC database (updated 2023-10-02).

Select annual climate data summaries for the HARDHART series and siblings. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data (updated 2023-10-09).

Geomorphic description summaries for the HARDHART 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 (updated 2023-10-04).

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

Competing Series

Soil series competing with HARDHART share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2023-10-06) and snapshot of the SC database (updated 2023-10-02).

Select annual climate data summaries for the HARDHART series and competing. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data (updated 2023-10-09).

Geomorphic description summaries for the HARDHART 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 (updated 2023-10-04).

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 HARDHART, 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 (updated 2023-10-02).

Block Diagrams

No block diagrams are available.

Map Units

Map units containing HARDHART 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
Hardhart, stony-Maciver-Nieman, very stony complex, 15 to 45 percent slopes	280E	139	2995233	2l9x3	mt027	1979	1:24000
Hardhart, stony-Maciver-Nieman, very stony complex, 15 to 45 percent slopes	280E	333	3039585	1r3tt	mt602	1963	1:20000
Farlin-Hardhart, stony-Rock outcrop complex, 25 to 60 percent slopes	264F	74	3039580	wcj1	mt602	1963	1:20000
Hardhart-Farlin, stony-Checkerboard complex, 4 to 15 percent slopes	164D	37	3039570	pd3j	mt602	1963	1:20000
Hardhart-Checkerboard complex, 8 to 25 percent slopes, bouldery	364E	17	3039586	1r3yz	mt602	1963	1:20000
Farlin, stony-Hardhart-Checkerboard, stony complex, 15 to 35 percent slopes	664E	17	3039578	pghv	mt602	1963	1:20000
Farlin-Hardhart, stony-Checkerboard, extremely stony complex, 15 to 60 percent slopes	764F	10	3039579	pgvy	mt602	1963	1:20000
Hardhart, very stony-Tropal-Rock outcrop complex, 15 to 50 percent slopes	9F	2997	2403779	2lpb8	mt605	2007	1:24000
Hardhart, very stony, Levengood, stony-Rock outcrop complex, 8 to 35 percent slopes	904E	1819	2403815	2lpcf	mt605	2007	1:24000
Hardhart, very stony-Tropal, very stony-Rock outcrop complex, 4 to 15 percent slopes	9D	67	2403778	2lpb7	mt605	2007	1:24000
Henneberry, very stony-Rock outcrop-Hardhart, very stony complex, 25 to 60 percent slopes	271F	19	2496280	20kx9	mt605	2007	1:24000
Hardhart, very stony-Tropal-Rock outcrop complex, 15 to 50 percent slopes	9F	18237	796653	vqzh	mt612	2011	1:24000
Henneberry, very stony-Rock outcrop-Hardhart, very stony complex, 25 to 60 percent slopes	271F	9598	1864256	20kx9	mt612	2011	1:24000
Hardhart, very stony, Levengood, stony-Rock outcrop complex, 8 to 35 percent slopes	904E	4792	1859959	20ffp	mt612	2011	1:24000
Elispring-Hardhart, very stony-Rock outcrop complex, 15 to 50 percent slopes	273F	3954	1864257	20kxb	mt612	2011	1:24000
Hardhart, very stony-Tropal, very stony-Rock outcrop complex, 4 to 15 percent slopes	9D	3271	1686614	1tm1x	mt612	2011	1:24000
Hardhart, very stony-Tropal-Rock outcrop complex, 15 to 50 percent slopes	9F	1751	2520816	vqzh	mt614	2012	1:24000
Henneberry, very stony-Rock outcrop-Hardhart, very stony complex, 25 to 60 percent slopes	271F	1621	2517432	20kx9	mt614	2012	1:24000
Elispring-Hardhart, very stony-Rock outcrop complex, 15 to 50 percent slopes	273F	1558	2492959	20kxb	mt614	2012	1:24000
Ettienridge, stony-Hardhart, stony families-Rock outcrop complex, 8 to 35 percent slopes, stony	6164E	91	3094114	2w750	mt630	1991	1:24000
Hardhart, rubbly-Checkerboard, very rubbly families-Rock outcrop complex, 45 to 70 percent slopes	6164G	76	3094106	2v1n1	mt630	1991	1:24000
Hardhart, rubbly-Checkerboard, very rubbly families-Rock outcrop complex, 45 to 70 percent slopes	6164G	7373	2833640	2v1n1	mt632		1:24000
Hardhart, stony-Knep families, complex, 20 to 60 percent slopes	1181F	6876	2609840	2r88l	mt632		1:24000
Farlin-Hardhart, stony-Rock outcrop complex, 25 to 60 percent slopes	264F	5374	2392797	2l9x0	mt632		1:24000
Hardhart, stony-Maciver-Nieman, very stony complex, 15 to 45 percent slopes	280E	4881	2392800	2l9x3	mt632		1:24000
Ettienridge, stony-Hardhart, stony families-Rock outcrop complex, 8 to 35 percent slopes, stony	6164E	2770	2911031	2w750	mt632		1:24000
Hardhart-Checkerboard complex, 8 to 25 percent slopes, bouldery	364E	2477	2392807	2l9xb	mt632		1:24000
Farlin, stony-Hardhart-Checkerboard, stony complex, 15 to 35 percent slopes	664E	1559	2486273	2pg5c	mt632		1:24000
Hardhart-Farlin, stony-Checkerboard complex, 4 to 15 percent slopes	164D	820	2392779	2l9wf	mt632		1:24000
Farlin-Hardhart, stony-Checkerboard, extremely stony complex, 15 to 60 percent slopes	764F	809	2604444	pgvy	mt632		1:24000
Findon, stony-Checkerboard, very-stony, Hardhart, stony-complex, 25 to 60 percent slopes	664F	655	2392828	2l9y0	mt632		1:24000
Farlin-Hardhart, stony-Rock outcrop complex, 25 to 60 percent slopes	264F	7270	815425	wcj1	mt637	2014	1:24000
Farlin, stony-Hardhart-Checkerboard, stony complex, 15 to 35 percent slopes	664E	3480	639556	pghv	mt637	2014	1:24000
Hardhart-Checkerboard complex, 8 to 25 percent slopes, bouldery	364E	2920	1612526	1r3yz	mt637	2014	1:24000
Farlin-Hardhart, stony-Checkerboard, extremely stony complex, 15 to 60 percent slopes	764F	1941	639900	pgvy	mt637	2014	1:24000
Hardhart-Farlin, stony-Checkerboard complex, 4 to 15 percent slopes	164D	1918	637252	pd3j	mt637	2014	1:24000
Findon, stony-Checkerboard, very-stony, Hardhart, stony-complex, 25 to 60 percent slopes	664F	1261	1612675	1r43s	mt637	2014	1:24000
Hardhart, stony-Maciver-Nieman, very stony complex, 15 to 45 percent slopes	280E	1205	1612397	1r3tt	mt637	2014	1:24000
Owenspring-Hardhart-Philipsburg complex, 2 to 8 percent slopes	358C	854	780864	v6k5	mt637	2014	1:24000
Hardhart, stony-Knep families, complex, 20 to 60 percent slopes	1181F	88	2979672	2r88l	mt637	2014	1:24000
Hardhart, rubbly-Checkerboard, very rubbly families-Rock outcrop complex, 45 to 70 percent slopes	6164G	111	3094136	2v1n1	mt657	1990	1:24000
Ettienridge, stony-Hardhart, stony families-Rock outcrop complex, 8 to 35 percent slopes, stony	6164E	10	3094144	2w750	mt657	1990	1:24000
Hanson, stony - Kitchell, extremely stony -Hardhart, stony Complex,35 to 70 percent slopes	4702F	3131	156740	5834	mt669		1:24000
Woosley, stony-Hardhart, very bouldery-Bavdark like, complex, 4 to 35 percent slopes	5527E	1152	696047	rc94	mt669		1:24000
Hardhart-Starley association, 10 to 60 percent slopes	147	3314	361138	d3sm	wy633	1987	1:24000

Map of Series Extent

Approximate geographic distribution of the HARDHART 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 (updated 2023-10-04).