Soil Data Explorer - DULAC

Official Series Description

Lab Data Summary

Aggregate lab data for the DULAC soil series. This aggregation is based on all pedons with a current taxon name of DULAC, 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 DULAC 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
133A	40A4960	S1957TN077010	Dulac	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	35.460556,-88.2688904
n/a	40A4959	S1957TN077009	Dulac	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	n/a

Water Balance

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

There are insufficient data to create the annual climate figure.

Geomorphic description summaries for the DULAC 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 2D hillslope position figure.

There are insufficient data to create the 3D hills figure.

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 DULAC, 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

Click a link below to display the diagram. Note that these diagrams may be from multiple survey areas.

1. AL-2012-04-24-12 | Greene County - June 1971

   Cross section of association 3 showing topography, important soils, and underlying material (Soil Survey of Greene County, Alabama; June 1971).

2. MS-2012-02-06-08 | Prentiss County - October 1997

   Typical pattern of soils and parent material in the Kipling-Sumter general soil map unit (Soil Survey of Prentiss County, Mississippi; October 1997).

3. MS-2012-04-27-04 | Tippah County - February 1966

   Distribution and pattern of major soils in Wilcox-Dulac-Falkner association (Soil Survey of Tippah County, Mississippi; February 1966).

4. MS-2012-04-27-11 | Newton County - February 1960

   Soil associations of Newton County, Mississippi (Soil Survey of Newton County, Mississippi; February 1960).

5. TN-2012-03-19-03 | Hardin County - June 1963

   Major soil series in associations 2 and 5 of their relation to the landscape (Soil Survey of Hardin County, TN; 1963).

Map Units

Map units containing DULAC 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
Dulac silt loam, 0 to 2 percent slopes	DuA	3916	329658	c214	al063	2013	1:
Cuthbert, Dulac, and Ruston soils, 12 to 35 percent slopes (sweatman, providence and smithdale)	CrE	93720	331831	c497	ms013	1963	1:15840
Cuthbert, Dulac, and Ruston soils, 12 to 35 percent slopes. severely eroded (sweatman, providence and smithdale)	CrE3	24538	331832	c498	ms013	1963	1:15840
Dulac silt loam, 5 to 8 percent slopes, severely eroded	DuC3	15781	331836	2w6fr	ms013	1963	1:15840
Dulac silt loam, 8 to 12 percent slopes, severely eroded	DuD3	7359	331838	c49g	ms013	1963	1:15840
Cuthbert-Dulac and Ruston soils, 8 to 12 percent slopes, severely eroded (sweatman, providence and smithdale)	CrD3	5026	331830	c496	ms013	1963	1:15840
Dulac silt loam, 5 to 8 percent slopes, eroded	DuC2	4772	331835	c49c	ms013	1963	1:15840
Dulac silt loam, 8 to 12 percent slopes, eroded	DuD2	2116	331837	c49f	ms013	1963	1:15840
Cuthbert, Dulac, and Ruston soils, 8 to 12 percent slopes (sweatman, providence and smithdale)	CrD	1643	331829	c495	ms013	1963	1:15840
Dulac silt loam, 2 to 5 percent slopes, severely eroded	DuB3	1051	331834	2w6fq	ms013	1963	1:15840
Dulac silt loam, 2 to 5 percent slopes, moderately eroded	DuB2	736	331833	2w6fp	ms013	1963	1:15840
Dulac silt loam, 8 to 12 percent slopes, severely eroded	3D3	1506	567545	m1kx	ms015	1985	1:20000
Dulac silt loam, 5 to 8 percent slopes, severely eroded	3C3	826	567544	m1kw	ms015	1985	1:20000
Dulac silt loam, 5 to 8 percent slopes, severely eroded	DuC3	3510	567846	m1wm	ms043	1965	1:15840
Dulac silt loam, 5 to 8 percent slopes, eroded	DuC2	1144	567845	m1wl	ms043	1965	1:15840
Dulac silt loam, 2 to 5 percent slopes, eroded	DuB2	75	567844	m1wk	ms043	1965	1:15840
Dulac and Boswell soils, 5 to 8 percent slopes, eroded (kolin and lorman)	DbC2	4800	568151	m26g	ms085	1961	1:20000
Dulac and Boswell soils, 5 to 8 percent slopes (kolin and lorman)	DbC	1612	568150	m26f	ms085	1961	1:20000
Dulac and Boswell soils, 2 to 5 percent slopes, eroded (kolin and lorman)	DbB2	1528	568149	m26d	ms085	1961	1:20000
Dulac and Boswell soils, 5 to 8 percent slopes, severely eroded (kolin and lorman)	DbC3	642	568152	m26h	ms085	1961	1:20000
Dulac and Boswell soils, 2 to 5 percent slopes (kolin and lorman)	DbB	521	568148	m26c	ms085	1961	1:20000
Dulac silt loam, 2 to 5 percent slopes, moderately eroded	DuB2	1760	333801	2w6fp	ms117	1995	1:24000
Dulac-Wilcox complex, 8 to 12 percent slopes, severely eroded	DwD3	9536	334184	c6r4	ms139	1963	1:15840
Dulac silt loam, 5 to 8 percent slopes, severely eroded	DuC3	6580	334182	2w6fr	ms139	1963	1:15840
Dulac silt loam, 2 to 5 percent slopes, severely eroded	DuB3	3096	334181	2w6fq	ms139	1963	1:15840
Dulac-Wilcox complex, 8 to 12 percent slopes	DwD	2465	334183	c6r3	ms139	1963	1:15840
Dulac silt loam, 2 to 5 percent slopes, moderately eroded	DuB2	1586	334180	2w6fp	ms139	1963	1:15840
Dulac-Tippah complex, 5 to 8 percent slopes, eroded	DtC2	11748	2545335	2qsft	tn005	2011	1:12000
Dulac-Tippah complex, 8 to 12 percent slopes, eroded	DtD2	6857	2545337	2qsfw	tn005	2011	1:12000
Dulac-Tippah complex, 8 to 12 percent slopes, severely eroded	DtD3	3141	2545338	2qsfx	tn005	2011	1:12000
Dulac-Tippah complex, 2 to 5 percent slopes, eroded	DtB2	2895	2545333	2qsfr	tn005	2011	1:12000
Dulac-Tippah complex, 5 to 8 percent slopes, severely eroded	DtC3	607	2545336	2qsfv	tn005	2011	1:12000
Dulac-Tippah complex, 2 to 5 percent slopes, severely eroded	DtB3	32	2545334	2qsfs	tn005	2011	1:12000
Dulac silty clay loam, 5 to 8 percent slopes, severely eroded	DuC3	2207	327209	bzh4	tn023	1989	1:24000
Dulac silty clay loam, 2 to 5 percent slopes, severely eroded	DuB3	1651	327207	bzh2	tn023	1989	1:24000
Dulac silty clay loam, 8 to 12 percent slopes, severely eroded	DuD3	1159	327210	bzh5	tn023	1989	1:24000
Dulac silt loam, 5 to 8 percent slopes	DuC	542	327208	bzh3	tn023	1989	1:24000
DULAC SILT LOAM, ERODED UNDULATING PHASE	Do	2824	327292	bzkt	tn039	2008	1:24000
DULAC SILT LOAM, UNDULATING PHASE	Ds	1315	327295	bzkx	tn039	2008	1:24000
DULAC SILT LOAM, ERODED ROLLING PHASE	Dn	1116	327291	bzks	tn039	2008	1:24000
DULAC SILTY CLAY LOAM, SEVERELY ERODED ROLLING PHASE	Dt	993	327296	bzky	tn039	2008	1:24000
DULAC SILT LOAM, ROLLING PHASE	Dp	860	327293	bzkv	tn039	2008	1:24000
DULAC SLIGHTLY ERODED UNDULATING PHASE	Dr	679	327294	bzkw	tn039	2008	1:24000
ROUGH GULLIED LAND, TIPPAH, AND DULAC SOILS	Rh	159	327350	bzmp	tn039	2008	1:24000
Dulac silt loam, 2 to 5 percent slopes	DkB	1576	327551	bzv5	tn071	1961	1:15840
Dulac silt loam, 2 to 5 percent slopes, moderately eroded	DkB2	647	327552	2w6fp	tn071	1961	1:15840
Dulac silt loam, 5 to 8 percent slopes, severely eroded	DkC3	584	327555	2w6fr	tn071	1961	1:15840
Dulac silt loam, 5 to 8 percent slopes	DkC	569	327554	bzv8	tn071	1961	1:15840
Dulac silt loam, 2 to 5 percent slopes, severely eroded	DkB3	346	327553	2w6fq	tn071	1961	1:15840
Dulac silt loam, eroded gently sloping deep phase	Dn	3804	327721	c00n	tn077	1955	1:20000
Dulac silty clay loam, severely eroded sloping deep phase	Dt	3746	327726	c00t	tn077	1955	1:20000
Dulac and Tippah silty clay loams, severely eroded sloping phases complex	Dlg	2634	327718	c00k	tn077	1955	1:20000
Dulac-Cuthbert soils, moderately steep phases complex (Dulac-Luverne)	Dx	980	327730	c00y	tn077	1955	1:20000
Dulac silty clay loam, severely eroded strongly sloping deep phase	Du	820	327727	c00v	tn077	1955	1:20000
Dulac silt loam, sloping deep phase	Do	734	327722	c00p	tn077	1955	1:20000
Dulac silt loam, eroded sloping deep phase	Dp	723	327723	c00q	tn077	1955	1:20000
Dulac-Cuthbert soils, severely eroded strongly sloping phases complex (Dulac-Luverne)	Dw	689	327729	c00x	tn077	1955	1:20000
Dulac and Tippah silty clay loams, severely eroded strongly sloping complex	Dlh	663	327719	c00l	tn077	1955	1:20000
Dulac silty clay loam, severely eroded gently sloping deep phase	Ds	587	327725	c00s	tn077	1955	1:20000
Dulac and Tippah silt loams, eroded sloping phases complex	Dlc	584	327714	c00f	tn077	1955	1:20000
Dulac and Tippah silty clay loams, severely eroded gently sloping phases complex	Dlf	470	327717	c00j	tn077	1955	1:20000
Dulac silt loam, strongly sloping deep phase	Dr	443	327724	c00r	tn077	1955	1:20000
Dulac and Tippah silt loams, eroded gently sloping phases complex	Dla	379	327712	c00c	tn077	1955	1:20000
Dulac and Tippah silt loams, sloping phases complex	Dlb	327	327713	c00d	tn077	1955	1:20000
Dulac-Cuthbert soils, moderately steep phases complex (Dulac-Luverne)	Dy	211	327731	c00z	tn077	1955	1:20000
Dulac-Cuthbert soils, severely eroded strongly sloping phases complex (Dulac-Luverne)	Dv	122	327728	c00w	tn077	1955	1:20000
Dulac and Tippah silt loams, gently sloping phases complex	Dz	90	327732	c010	tn077	1955	1:20000
Dulac and Tippah silty clay loams, severely eroded strongly sloping complex	Dld	50	327715	c00g	tn077	1955	1:20000
Dulac and Tippah silty clay loams, severely eroded strongly sloping complex	Dle	11	327716	c00h	tn077	1955	1:20000
Dulac-Tippah complex, 8 to 12 percent slopes, severely eroded	DtD3	2231	2545252	2qs7w	tn079	2012	1:12000
Dulac-Tippah complex, 5 to 8 percent slopes, severely eroded	DtC3	1522	2545250	2qs7t	tn079	2012	1:12000
Dulac-Tippah complex, 5 to 8 percent slopes, eroded	DtC2	1412	2545249	2qs7s	tn079	2012	1:12000
Dulac-Tippah complex, 2 to 5 percent slopes, eroded	DtB2	1074	2545247	2qs7q	tn079	2012	1:12000
Dulac-Tippah complex, 8 to 12 percent slopes, eroded	DtD2	948	2545251	2qs7v	tn079	2012	1:12000
Dulac-Tippah complex, 2 to 5 percent slopes, severely eroded	DtB3	49	2545248	2qs7r	tn079	2012	1:12000
Dulac silt loam, 2 to 5 percent slopes, severely eroded	DuB3	5858	327955	2w6fq	tn109	1994	1:20000
Dulac silt loam, 2 to 5 percent slopes	DuB	3841	327954	c085	tn109	1994	1:20000
Dulac silt loam, 5 to 8 percent slopes, severely eroded	DuC3	3121	567196	m16n	tn113	1974	1:20000
Dulac silt loam, 8 to 12 percent slopes, severely eroded	DuD3	2345	567197	m16p	tn113	1974	1:20000
Dulac silt loam, 2 to 5 percent slopes	DuB	2067	567194	m16l	tn113	1974	1:20000
Dulac silt loam, 2 to 5 percent slopes, severely eroded	DuB3	1701	567195	m16m	tn113	1974	1:20000

Map of Series Extent

Approximate geographic distribution of the DULAC 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).