Soil Data Explorer - GRALIC

Official Series Description

Lab Data Summary

Aggregate lab data for the GRALIC soil series. This aggregation is based on all pedons with a current taxon name of GRALIC, 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 GRALIC 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 GRALIC 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 GRALIC 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 GRALIC 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 GRALIC 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 GRALIC 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 GRALIC 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 GRALIC 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 hills 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 GRALIC, 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 GRALIC 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
Gralic-Supervisor families complex, 35 to 60 percent slopes.	217	1009	470532	hsmg	ca703	1983	1:24000
Gralic-supervisor families complex, 10 to 35 percent slopes.	216	995	470531	hsmf	ca703	1983	1:24000
Gralic-Loberg families-Rubble land association, 35 to 80 percent slopes.	215	558	470530	hsmd	ca703	1983	1:24000
Gralic-Grenadier families complex, 15 to 50 percent slopes	20	22850	510584	k49g	co676	1983	1:24000
Kingmine-Gralic families, complex, 40 to 65 percent slopes	976	61	3173280	2wv33	id712	2008	1:24000
Gralic-Kingmine families, complex, 15 to 40 percent slopes	993	6	3173281	2wv3j	id712	2008	1:24000
Gralic, very stony surface-Kingmine-Sponsor families, complex, 25 to 55 percent slopes	874	19948	2733486	2slsd	id713		1:24000
Jumpstart-Gralic family-Poodle family, complex, 5 to 30 percent slopes	907	5227	2733513	2slt9	id713		1:24000
Gralic-Sambrito families, complex, 15 to 60 percent slopes	873	4802	2733485	2slsb	id713		1:24000
Gralic-Broad Canyon families, complex, 12 to 30 percent slopes	876	2142	2733487	2slsf	id713		1:24000
Kingmine-Gralic families, complex, 40 to 65 percent slopes	976	1815	2963877	2wv33	id713		1:24000
Gralic, extremely stony surface-Sambrito families, complex, 2 to 15 percent slopes	908	1409	2733515	2sltc	id713		1:24000
Winnemucca-Gralic family, complex, 5 to 35 percent slopes	898	779	2733498	2slss	id713		1:24000
Gralic family-Broad Canyon complex, 15 to 40 percent slopes	2005	673	2980867	2x00y	id713		1:24000
Gralic-Kingmine families, complex, 15 to 40 percent slopes	993	294	2963889	2wv3j	id713		1:24000
Gralic, very stony surface-Kingmine-Sponsor families, complex, 25 to 55 percent slopes	874	1218	3163445	2slsd	id716		1:24000
Gralic-Sambrito families, complex, 15 to 60 percent slopes	873	190	3163444	2slsb	id716		1:24000
Gralic-Broad Canyon families, complex, 12 to 30 percent slopes	876	131	3163446	2slsf	id716		1:24000
Jumpstart-Gralic family-Poodle family, complex, 5 to 30 percent slopes	907	52	3173399	2slt9	id716		1:24000
Gralic-Rock outcrop complex, 50 to 75 percent slopes	363	1223	644060	pm64	nv773	1981	1:24000
Gralic-Rock outcrop complex, 8 to 50 percent slopes	362	625	644059	pm63	nv773	1981	1:24000
Gralic-Merino-Hobacker families complex, 30 to 80 percent slopes	46		3312882	30gww	ut645		1:24000
Skaggs-Gralic families complex, 30 to 70 percent slopes	8A		3314869	30hlz	ut645		1:24000
Hobacker-Gralic families-Rock outcrop complex, 30 to 80 percent slopes	8		3314870	30hm0	ut645		1:24000
Rock outcrop-Dollarhide, rubbly-Gralic families complex, 30 to 70 percent slopes	64	13273	512414	k66h	ut646		1:24000
Gralic family, 15 to 70 percent slopes	56	8497	512397	k65y	ut646		1:24000
Geohrock, moist, extremely stony-Gralic, dry families association, 30 to 70 percent slopes	62	6518	512416	k66k	ut646		1:24000
Gralic, very stony surface-Kingmine-Sponsor families, complex, 25 to 55 percent slopes	874	230	3083464	2slsd	wy623	1971	1:20000
Winnemucca-Gralic family, complex, 5 to 35 percent slopes	898	117	3083470	2slss	wy623	1971	1:20000
Washboard-Gralic families, complex, 20 to 60 percent slopes -- draft	355	16995	152017	535s	wy663	2012	1:24000
Enentah-Gralic families, complex, 10 to 40 percent slopes	333	11757	152009	535j	wy663	2012	1:24000
Washboard-Gralic families, complex, 20 to 60 percent slopes -- draft	355	335	2611986	535s	wy723		1:24000
Enentah-Gralic families, complex, 10 to 40 percent slopes	333	0	2925208	535j	wy723		1:24000

Map of Series Extent

Approximate geographic distribution of the GRALIC 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).