Soil Data Explorer - OUACHITA

Official Series Description

Lab Data Summary

Aggregate lab data for the OUACHITA soil series. This aggregation is based on all pedons with a current taxon name of OUACHITA, 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 OUACHITA 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 OUACHITA 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 OUACHITA 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 OUACHITA 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 OUACHITA 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 OUACHITA 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 OUACHITA 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 OUACHITA 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 OUACHITA, 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 OUACHITA 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
Ouachita silt loam, 0 to 1 percent slopes, frequently flooded	18	9411	565067	30g3t	ar003	1977	1:20000
Ouachita silt loam, occasionally flooded	49	9895	3179383	lynd	ar019	1983	1:20000
Ouachita silt loam, 0 to 3 percent slopes	48	14	3179382	lync	ar019	1983	1:20000
Ouachita silt loam, 0 to 1 percent slopes, frequently flooded	Oa	25295	565464	30g3t	ar043	1972	1:24000
Ouachita silt loam, occasionally flooded	23	6688	565499	lzfx	ar045	1975	1:20000
Ouachita silt loam, 0 to 2 percent slopes, frequently flooded	6B	21432	1715905	30g3v	ar053	2006	1:24000
Ouachita silt loam, occasionally flooded	31	1139	565657	lzm0	ar057	1976	1:20000
Ouachita silt loam, occasionally flooded	49	3556	3179273	lynd	ar059	1983	1:20000
Ouachita silt loam, 0 to 3 percent slopes	48	3037	3179272	lync	ar059	1983	1:20000
Ouachita silt loam, 0 to 1 percent slopes, frequently flooded	OuA	1990	721516	30g3t	ar099	2000	1:24000
Ouachita association, frequently flooded	OU	24432	566068	m018	ar103	1969	1:20000
Ouachita silt loam, 0 to 1 percent slopes, frequently flooded	Ot	9220	566070	30g3t	ar103	1969	1:20000
Ouachita silt loam, 0 to 2 percent slopes, occasionally flooded	58	1025	1542944	1nskd	ar109	2005	1:20000
Ouachita silt loam, 0 to 3 percent slopes, rarely flooded	57	178	1542945	1nskf	ar109	2005	1:20000
Ouachita silt loam, 0 to 1 percent slopes, frequently flooded	16	23106	566223	30g3t	ar125	1976	1:20000
Ouachita-Amy complex, frequently flooded	17	2987	566224	m069	ar125	1976	1:20000
Ouachita silt loam, 0 to 3 percent slopes, occasionally flooded	21B	11684	1707519	1v9t8	ar133	1996	1:24000
Ouachita silt loam, 0 to 3 percent slopes, frequently flooded	22B	6082	1707520	1v9t9	ar133	1996	1:24000
Ouachita silt loam, 0 to 1 percent slopes, frequently flooded	6	15670	564691	30g3t	ar620	1977	1:20000
Ouachita silt loam, 0 to 1 percent slopes, frequently flooded	25	32413	564846	30g3t	ar660	1975	1:20000
Ouachita and Ochlockonee soils, occasionally flooded	52	2673	564928	lyvh	ar670	1981	1:20000
Ouachita silt loam, occasionally flooded	51	1521	564927	lyvg	ar670	1981	1:20000
Guyton-Ouachita complex, 0 to 1 percent slopes, frequently flooded	GY	57755	1586104	2x3yy	la003	1978	1:24000
Guyton-Ouachita complex, 0 to 1 percent slopes, frequently flooded	GYA	51291	1725705	2x3yy	la011	1993	1:24000
Guyton-Ouachita silt loams, 0 to 1 percent slopes, frequently flooded	GYO	112731	1724587	2ynxh	la013	1992	1:24000
Guyton-Ouachita silt loams, 0 to 1 percent slopes, frequently flooded	GYA	33939	1592253	2ynxh	la015	2005	1:24000
Guyton and Ouachita silt loams, frequently flooded	GY	34372	1725648	1vxp2	la021	1985	1:24000
Guyton-Ouachita silt loams, 0 to 1 percent slopes, frequently flooded	Go	56493	569322	2ynxh	la027	1986	1:20000
Ouachita, Ochlockonee, and Guyton soils, nearly level to undulating, frequently flooded	OUA	19674	577016	mcff	la033	2007	1:24000
Ouachita, Ochlockonee and Guyton soils, 0 to 3 percent slopes, frequently flooded	OG	52478	1605275	2w8y5	la037	1992	1:24000
Guyton-Ouachita complex, 0 to 1 percent slopes, frequently flooded	Gy	11469	1017133	2x3yy	la039	1970	1:24000
Guyton-Ouachita-Ochlockonee association, frequently flooded	GYA	73093	1725257	1vx8g	la049	1991	1:24000
Guyton and Ouachita soils, frequently flooded	GY	27029	1600170	1qq3d	la059	1986	1:24000
Ouachita and Jena soils, frequently flooded	OE	17574	1600180	1qq3q	la059	1986	1:24000
Guyton-Ouachita silt loams, 0 to 1 percent slopes, frequently flooded	GyA	19208	571121	2ynxh	la061	1991	1:24000
Ouachita, Ochlockonee and Guyton soils, 0 to 3 percent slopes, frequently flooded	OU	36775	569749	2w8y5	la063	1987	1:24000
Guyton-Ouachita complex, 0 to 1 percent slopes, frequently flooded	Gy	66389	569961	2x3yy	la079	1973	1:24000
Ouachita, Ochlockonee and Guyton soils, 0 to 3 percent slopes, frequently flooded	OG	57912	1721643	2w8y5	la091	1991	1:24000
Ouachita and Bibb soils, frequently flooded	OB	33253	327011	bz8r	la103	1985	1:24000
Ouachita, Ochlockonee and Guyton soils, 0 to 3 percent slopes, frequently flooded	OG	62353	1536518	2w8y5	la105	1985	1:24000
Guyton-Ouachita silt loams, 0 to 1 percent slopes, frequently flooded	GZ	9992	1725338	2ynxh	la111	1992	1:24000
Guyton-Ouachita complex, 0 to 1 percent slopes, frequently flooded	GuoA	49064	3103234	2x3yy	la115	1992	1:24000
Ouachita, Bibb, and Jena soils, frequently flooded	OB	68195	1724145	1vw3l	la117	1989	1:24000
Guyton-Ouachita silt loams, 0 to 1 percent slopes, frequently flooded	GY	70174	570348	2ynxh	la119	1989	1:24000
Ouachita, Ochlockonee and Guyton soils, 0 to 3 percent slopes, frequently flooded	OG	5300	1725609	2w8y5	la125	2002	1:24000
Ouachita-Jena complex, 0 to 1 percent slopes, frequently flooded	OjA	298	2642223	2rs2z	ms041	2012	1:24000
Ouachita-Jena complex, 0 to 1 percent slopes, frequently flooded	Oa	11902	333616	c64t	ms111	1997	1:20000

Map of Series Extent

Approximate geographic distribution of the OUACHITA 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).