Soil Data Explorer - GWINNETT

Official Series Description

Lab Data Summary

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

Pedons used in the lab summary:

MLRA	Lab ID	Pedon ID	Taxonname	CI	NSSL / NASIS Reports	Link To SoilWeb GMap
136	S73AL-081-1	73AL081001-pgm	Gwinnett	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	32.6747283935547,-85.3350067138672
136	S99AL-123-3	99AL123003-pgm	Gwinnett	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	32.7277778,-85.7663889

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the GWINNETT 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 GWINNETT 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 GWINNETT 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 GWINNETT 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 mountains figure.

Competing Series

Soil series competing with GWINNETT 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 GWINNETT 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 GWINNETT 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 mountains 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 GWINNETT, 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 GWINNETT 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
Davidson-Gwinnett association, hilly	DGD	14435	122782	43rq	al027	1971	1:20000
Hiwassee-Gwinnett association, hilly	HGH	5963	122799	43s8	al029	1974	1:24000
Gwinnett sandy loam, 6 to 10 percent slopes	17	9565	330198	c2lk	al081	1979	1:20000
Gwinnett sandy loam, 1 to 6 percent slopes	16	6775	330197	c2lj	al081	1979	1:20000
Gwinnett sandy loam, 10 to 15 percent slopes	18	6220	330199	c2ll	al081	1979	1:20000
Gwinnett-Lloyd complex, 6 to 15 percent slopes, moderately eroded	GvD2	37525	1476416	1lkbb	al123	2005	1:24000
Gwinnett-Agricola complex, 15 to 25 percent slopes, moderately eroded	GwE2	22630	1476415	1lkb9	al123	2005	1:24000
Gwinnett clay loam, 6 to 10 percent slopes, severely eroded	GeC3	13443	124193	4577	ga067	1969	1:15840
Gwinnett clay loam, 10 to 15 percent slopes, severely eroded	GeD3	8201	124194	4578	ga067	1969	1:15840
Gwinnett clay loam, 2 to 6 percent slopes, severely eroded	GeB3	6475	124192	4576	ga067	1969	1:15840
Gwinnett clay loam, 15 to 25 percent slopes, eroded	GeE2	4387	124195	4579	ga067	1969	1:15840
Gwinnett loam, 6 to 10 percent slopes, eroded	GgC2	2249	124197	457c	ga067	1969	1:15840
Gwinnett loam, 2 to 6 percent slopes, eroded	GgB2	2157	124196	457b	ga067	1969	1:15840
Gwinnett loam, 10 to 15 percent slopes, eroded	GgD2	2080	124198	457d	ga067	1969	1:15840
Urban land-Gwinnett complex, 2 to 10 percent slopes	UgC	989	124226	4589	ga067	1969	1:15840
Gwinnett sandy loam, 6 to 10 percent slopes	GeC	3276	124249	4591	ga089	1979	1:15840
Gwinnett sandy loam, 10 to 15 percent slopes	GeD	1854	124250	4592	ga089	1979	1:15840
Gwinnett sandy clay loam, 2 to 10 percent slopes, eroded	GwC2	1545	124252	4594	ga089	1979	1:15840
Gwinnett sandy loam, 2 to 6 percent slopes	GeB	1163	124248	4590	ga089	1979	1:15840
Gwinnett sandy clay loam, 10 to 15 percent slopes, eroded	GwD2	1072	124253	4595	ga089	1979	1:15840
Gwinnett sandy loam, 15 to 30 percent slopes	GeE	1068	124251	4593	ga089	1979	1:15840
Gwinnett sandy clay loam, 15 to 25 percent slopes, eroded	GwE2	345	124254	4596	ga089	1979	1:15840
Lloyd-Gwinnett complex, 6 to 15 percent slopes, moderately eroded	LaD2	1070	1672349	1t46r	ga121	2007	1:12000
Gwinnett clay loam, 6 to 10 percent slopes, eroded	GeC2	9520	639949	pgxj	ga135	1966	1:15840
Gwinnett clay loam, 10 to 25 percent slopes, eroded	GeE2	9150	639950	pgxk	ga135	1966	1:15840
Gwinnett loam, 10 to 25 percent slopes, eroded	GgE2	6420	639953	pgxn	ga135	1966	1:15840
Gwinnett clay loam, 2 to 6 percent slopes, eroded	GeB2	5330	639948	pgxh	ga135	1966	1:15840
Gwinnett loam, 6 to 10 percent slopes, eroded	GgC2	3640	639952	pgxm	ga135	1966	1:15840
Gwinnett loam, 2 to 6 percent slopes, eroded	GgB2	2280	639951	pgxl	ga135	1966	1:15840
Gwinnett sandy clay loam, 6 to 15 percent slopes, eroded	GwD2	10260	126949	4834	ga159	1997	1:24000
Gwinnett sandy clay loam, 15 to 25 percent slopes, eroded	GwE2	4890	126950	4835	ga159	1997	1:24000
Gwinnett sandy loam, 6 to 15 percent slopes	GeD	1655	126947	4832	ga159	1997	1:24000
Gwinnett sandy loam, 15 to 25 percent slopes	GeE	1460	126948	4833	ga159	1997	1:24000
Gwinnett sandy clay loam, 6 to 15 percent slopes, severely eroded	GtD3	455	142606	4sd6	ga211	1998	1:24000
Gwinnett sandy loam, 6 to 15 percent slopes, moderately eroded	GnD2	35	142603	4sd3	ga211	1998	1:24000
Gwinnett sandy loam, 2 to 6 percent slopes, moderately eroded	GnB2	30	142602	4sd2	ga211	1998	1:24000
Gwinnett sandy clay loam, 2 to 6 percent slopes, severely eroded	GtB3	10	142605	4sd5	ga211	1998	1:24000
Gwinnett sandy loam, 15 to 25 percent slopes, moderately eroded	GnE2	5	142604	4sd4	ga211	1998	1:24000
Gwinnett loam, 15 to 35 percent slopes, eroded	GgF2	9675	125216	4697	ga604	1972	1:20000
Gwinnett sandy loam, 15 to 45 percent slopes	GfF	5940	125258	46bl	ga605	1967	1:15840
Gwinnett sandy loam, 10 to 15 percent slopes, eroded	GfD2	3670	125257	46bk	ga605	1967	1:15840
Gwinnett sandy loam, 2 to 6 percent slopes, eroded	GfB2	2540	125256	46bj	ga605	1967	1:15840
Musella-Gwinnett stony complex, 10 to 25 percent slopes	MFE	1665	125274	46c3	ga605	1967	1:15840
Musella and Gwinnett stony soils, 25 to 60 percent slopes	MGF	1330	125275	46c4	ga605	1967	1:15840
Gwinnett clay loam, 10 to 25 percent slopes, eroded	GwE2	19905	125314	46dd	ga606	1973	1:20000
Gwinnett clay loam, 6 to 10 percent slopes, eroded	GwC2	14510	125313	46dc	ga606	1973	1:20000
Gwinnett sandy clay loam, 6 to 15 percent slopes, severely eroded	GdD3	10220	531330	ktwp	ga622	1967	1:20000
Gwinnett loam, 10 to 25 percent slopes, eroded	GgE2	3370	531334	ktwt	ga622	1967	1:20000
Gwinnett loam, 6 to 10 percent slopes, eroded	GgC2	2525	531333	ktws	ga622	1967	1:20000
Gwinnett loam, 2 to 6 percent slopes, eroded	GgB2	1845	531332	ktwr	ga622	1967	1:20000
Gwinnett sandy clay loam, 15 to 25 percent slopes, severely eroded	GdE3	1090	531331	ktwq	ga622	1967	1:20000
Gwinnett sandy clay loam, 2 to 6 percent slopes, eroded	GdB2	1010	531329	ktwn	ga622	1967	1:20000
Gwinnett sandy loam, 2 to 6 percent slopes	GeB	11235	125524	46m5	ga625	1976	1:20000
Gwinnett sandy clay loam, 6 to 10 percent slopes, severely eroded	GwC3	10060	125526	46m7	ga625	1976	1:20000
Gwinnett sandy clay loam, 10 to 25 percent slopes, eroded	GwE2	10040	125527	46m8	ga625	1976	1:20000
Gwinnett sandy clay loam, 6 to 10 percent slopes, eroded	GwC2	7260	125525	46m6	ga625	1976	1:20000
Gwinnett sandy clay loam, 6 to 10 percent slopes, eroded	GwC2	11505	125607	46pv	ga629	1976	1:20000
Gwinnett sandy clay loam, 10 to 15 percent slopes, eroded	GwD2	5220	125608	46pw	ga629	1976	1:20000
Gwinnett sandy clay loam, 6 to 10 percent slopes, eroded	GwC2	13647	125720	46th	ga636	1975	1:20000
Gwinnett sandy clay loam, 10 to 25 percent slopes, severely eroded	GwE3	8729	125723	46tl	ga636	1975	1:20000
Gwinnett sandy loam, 2 to 6 percent slopes	GgB	5681	125719	46tg	ga636	1975	1:20000
Gwinnett sandy clay loam, 15 to 25 percent slopes, eroded	GwE2	2932	125722	46tk	ga636	1975	1:20000
Gwinnett sandy clay loam, 10 to 15 percent slopes, eroded	GwD2	2426	125721	46tj	ga636	1975	1:20000
Gwinnett sandy clay loam, 6 to 10 percent slopes, eroded	GwC2	7210	127354	48j6	ga649	1992	1:12000
Gwinnett sandy loam, 2 to 6 percent slopes	GeB	4840	127349	48j1	ga649	1992	1:12000
Gwinnett sandy loam, 6 to 10 percent slopes	GeC	3750	127350	48j2	ga649	1992	1:12000
Gwinnett sandy loam, 10 to 15 percent slopes	GeD	2830	127351	48j3	ga649	1992	1:12000
Gwinnett sandy clay loam, 10 to 15 percent slopes, eroded	GwD2	1965	127355	48j7	ga649	1992	1:12000
Gwinnett sandy clay loam, 2 to 6 percent slopes, eroded	GwB2	1810	127353	48j5	ga649	1992	1:12000
Gwinnett sandy loam, 15 to 25 percent slopes	GeE	1335	127352	48j4	ga649	1992	1:12000
Gwinnett sandy clay loam, 15 to 25 percent slopes, eroded	GwE2	735	127356	48j8	ga649	1992	1:12000
Gwinnett sandy loam, 15 to 25 percent slopes	GtE	4254	131801	4f4n	sc007	1975	1:20000
Gwinnett sandy loam, 25 to 40 percent slopes	GtF	572	131802	4f4p	sc007	1975	1:20000
Gwinnett clay loam, thick solum variant, 2 to 6 percent slopes	GwB	577	120710	41lw	va631	1973	1:15840
Gwinnett clay loam, thick solum variant, 6 to 15 percent slopes	GwC	422	120711	41lx	va631	1973	1:15840

Map of Series Extent

Approximate geographic distribution of the GWINNETT 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).