Soil Data Explorer - ALLIGATOR

Official Series Description

Lab Data Summary

Aggregate lab data for the ALLIGATOR soil series. This aggregation is based on all pedons with a current taxon name of ALLIGATOR, 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 ALLIGATOR were used in the calculation. Source: KSSL snapshot (updated 2020-03-13). 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
131A	40A4759	S1956MS083003	ALLIGATOR	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	33.6173668,-90.1584244

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the ALLIGATOR 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 ALLIGATOR series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-02-21), parsed OSD records (updated 2023-10-02) and snapshot of SC database (updated 2023-10-02).

Select annual climate data summaries for the ALLIGATOR 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 ALLIGATOR 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 ALLIGATOR share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2023-10-02) and snapshot of the SC database (updated 2023-10-02).

Select annual climate data summaries for the ALLIGATOR 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 ALLIGATOR 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.

Soil series sharing subgroup-level classification with ALLIGATOR, 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. LA-2012-04-27-09 | St. Mary Parish - March 1959

   Diagram showing elevations and soil materials of some of the soils and miscellaneous land types in St. Mary Parish (Soil Survey of St. Mary Parish, Louisiana; March 1959).

2. MS-2010-09-08-01 | Holmes County -

   Typical pattern of soils and underlying material in the Dundee-Dubbs-Tensas general soil map unit.

3. MS-2012-02-06-01 | Carroll County - May 1990

   Pattern of soils and underlying material in the Dundee-Dubbs-Sharkey general soil map unit (Soil Survey of Carroll County, Mississippi; May 1990).

4. MS-2012-02-06-11 | Tate County - March 1967

   Distribution of soils in the Alligator-Dowling soil association (Soil Survey of Tate County, Mississippi; March 1967).

5. MS-2012-04-26-09 | De Soto County - September 1959

   Soil associations in De Soto County (Soil Survey of De Soto County, Mississippi; September 1959).

6. MS-2012-04-26-10 | Humphreys County - September 1959

   Northwest-southeast cross section showing relation of soils and topography in Humphreys County, Miss (Soil Survey of Humphreys County, Mississippi; September 1959).

7. MS-2012-04-27-01 | Quitman County - December 1958

   Soil associations, Quitman County, Miss. (Soil Survey of Quitman County, Mississippi; December 1958).

8. MS-2012-04-27-03 | Sunflower County - February 1959

   East-west cross section, 2 miles south of Doddsville, showing relation of soils to topography (Soil Survey of Sunflower County, Mississippi; February 1959).

9. MS-2012-04-27-09 | Tunica County - May 1956

   Soil association map of Tunica County, Miss (Soil Survey of Tunica County, Mississippi; May 1956).

10. MS-2012-04-27-10 | Bolivar County - December 1958

    Soil associations in Bolivar County: 1. Alluvial soils; 2. Commerce-Robinsonville-Crevasse; 3. Forestdale-Dundee-Bosket; 4. Brittain-Pearson-Dexter; 5. Dowling-Alligator-Sharkey (Soil Survey of Bolivar County, Mississippi; December 1958).

Map Units

Map units containing ALLIGATOR 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
Alligator silty clay, 0 to 1 percent slopes	AlA	38020	564156	ly1l	ar035	1970	1:20000
Alligator silty clay, gently undulating	AlU	10350	564157	ly1m	ar035	1970	1:20000
Alligator clay, 0 to 1 percent slopes, rarely flooded, west	AaA	76790	564366	2t234	ar037	1966	1:20000
Alligator clay, gently undulating	AaB	11200	564367	ly8d	ar037	1966	1:20000
Alligator silt loam	Ag	7080	564369	ly8g	ar037	1966	1:20000
Alligator silty clay loam	Am	1450	564370	ly8h	ar037	1966	1:20000
Alligator complex	Ac	595	564368	ly8f	ar037	1966	1:20000
Alligator clay, 0 to 1 percent slopes, rarely flooded, west	Ac	10350	564072	2t234	ar077	1974	1:20000
Alligator clay, frequently flooded	Ag	8120	564073	lxyx	ar077	1974	1:20000
Alligator clay, 0 to 1 percent slopes, rarely flooded, west	Aa	11000	564332	2t234	ar093	1967	1:20000
Alligator clay	Ac	8800	564214	ly3g	ar107	1971	1:20000
Alligator soils, frequently flooded	Ag	3030	564215	ly3h	ar107	1971	1:20000
Alligator clay, 0 to 1 percent slopes, rarely flooded, west	Aa	11591	564259	2t234	ar111	1973	1:20000
Alligator and Sharkey clays, 0 to 1 percent slopes	AcA	85960	564421	lyb4	ar123	1964	1:20000
Alligator and Sharkey clays, gently undulating	AcB	8480	564422	lyb5	ar123	1964	1:20000
Alligator and Sharkey silty clay loams, overwash	Ad	1550	564424	lyb7	ar123	1964	1:20000
Alligator and Sharkey clays, undulating	AcC	1360	564423	lyb6	ar123	1964	1:20000
Alligator clay, frequently flooded	Ar	12215	1725637	1vxnq	la021	1985	1:24000
Alligator clay, 0 to 1 percent slopes, occasionally flooded	Ag	30810	1722376	2v17z	la025	1983	1:24000
Tensas-Alligator complex, undulating	Tn	25467	1722428	1vtb6	la025	1983	1:24000
Alligator clay, frequently flooded	At	19972	1722377	1vt8k	la025	1983	1:24000
Tensas-Alligator complex, undulating, occasionally flooded	Ts	11413	1722429	1vtb7	la025	1983	1:24000
Dundee-Alligator complex, gently undulating	Ds	10834	1722388	1vt8x	la025	1983	1:24000
Tensas-Alligator complex, undulating	To	64351	1723886	1vvv7	la029	1983	1:24000
Alligator clay, 0 to 1 percent slopes, occasionally flooded	Ab	33283	1723853	2v17z	la029	1983	1:24000
Alligator clay	Aa	17727	1723852	1vvt4	la029	1983	1:24000
Tensas-Alligator complex, undulating, occasionally flooded	Tr	17320	1723887	1vvv8	la029	1983	1:24000
Dundee-Alligator-Tensas complex, gently undulating	Dh	12388	1723869	1vvtp	la029	1983	1:24000
Dundee-Alligator-Tensas complex, undulating	Ds	10959	1723870	1vvtq	la029	1983	1:24000
Alligator clay, gently undulating, occasionally flooded	Ac	8311	1723854	1vvt6	la029	1983	1:24000
Alligator clay	Ag	3293	824173	wnm7	la045	1973	1:24000
Alligator soils, frequently flooded	At	2338	824174	wnm8	la045	1973	1:24000
Alligator-Galvez complex	Ax	786	824175	wnm9	la045	1973	1:24000
Alligator clay, frequently flooded	At	4006	1600153	1qq2v	la059	1986	1:24000
Alligator clay, 0 to 1 percent slopes, occasionally flooded	Ag	1925	1600152	2v17z	la059	1986	1:24000
Alligator clay, frequently flooded	Af	4835	1725275	1vx91	la073	1969	1:24000
Alligator clay	Ac	2369	1725274	1vx90	la073	1969	1:24000
Dundee-Alligator complex, undulating	De	7434	1678427	1tbjt	la077	1980	1:24000
Alligator association, frequently flooded	AL	4104	569941	m426	la079	1973	1:24000
Dundee-Alligator complex, gently undulating	Dr	3052	823526	wmyc	la097	1983	1:24000
Alligator silty clay loam, 0 to 1 percent slopes, rarely flooded	86010	3440	894179	z0gh	mo069	1977	1:24000
Alligator-Steele complex, 0 to 1 percent slopes, occasionally flooded	86125	1867	2571570	2r02k	mo069	1977	1:24000
Alligator silty clay loam, 0 to 1 percent slopes, occasionally flooded	86009	475	2689841	z0hv	mo069	1977	1:24000
Alligator-Steele complex, 0 to 1 percent slopes, rarely flooded	86081	311	894180	z0gj	mo069	1977	1:24000
Alligator silty clay, 0 to 1 percent slopes, rarely flooded	86011	1898	2500802	2pzyk	mo133	1978	1:24000
Alligator silty clay loam, 0 to 1 percent slopes, occasionally flooded	86009	9950	894221	z0hv	mo143	1974	1:24000
Alligator silty clay, 0 to 1 percent slopes, rarely flooded	86011	4896	2500801	2pzyk	mo143	1974	1:24000
Alligator silty clay, 0 to 1 percent slopes, occasionally flooded	86137	3298	2689888	2r02m	mo143	1974	1:24000
Alligator silty clay, 0 to 1 percent slopes, occasionally flooded	86137	824	2571600	2r02m	mo201	1978	1:24000
Alligator silty clay, 0 to 1 percent slopes, rarely flooded	86011	778	2500803	2pzyk	mo201	1978	1:24000
Alligator clay, 0.5 to 3 percent slopes	Ab	20442	567463	m1h8	ms011	1956	1:20000
Alligator silty clay, 0.5 to 3 percent slopes	Ae	7031	567466	m1hc	ms011	1956	1:20000
Alligator silty clay loam, 0.5 to 3 percent slopes	Ah	1268	567468	m1hf	ms011	1956	1:20000
Alligator clay, 3 to 7 percent slopes	Ac	1062	567464	m1h9	ms011	1956	1:20000
Alligator clay, 0 to 0.5 percent slopes	Aa	732	567462	m1h7	ms011	1956	1:20000
Alligator silty clay, 3 to 7 percent slopes	Ag	269	567467	m1hd	ms011	1956	1:20000
Alligator silty clay, 0 to 0.5 percent slopes	Ad	46	567465	m1hb	ms011	1956	1:20000
Alligator silty clay	20	645	567529	m1kd	ms015	1985	1:20000
Alligator clay, 0.5 to 3 percent slopes	Ab	28068	567613	m1n3	ms027	1956	1:24000
Alligator clay, 0 to 0.5 percent slopes	Aa	7605	567612	m1n2	ms027	1956	1:24000
Alligator silty clay, 0.5 to 3 percent slopes	Ae	2063	567616	m1n6	ms027	1956	1:24000
Alligator silty clay, 0 to 0.5 percent slopes	Ad	360	567615	m1n5	ms027	1956	1:24000
Alligator clay, 3 to 7 percent slopes	Ac	333	567614	m1n4	ms027	1956	1:24000
Alligator clay, nearly level phase	Aa	502	567713	m1rb	ms033	1955	1:24000
Alligator association	At	2535	567829	m1w2	ms043	1965	1:15840
Alligator silty clay loam	As	1202	567832	m1w5	ms043	1965	1:15840
Alligator clay	Ac	434	567830	m1w3	ms043	1965	1:15840
Alligator clay, depressional	Ad	281	567831	m1w4	ms043	1965	1:15840
Alligator silty clay loam, occasionally flooded	Ar	17534	567947	m1zw	ms051	1997	1:20000
Alligator silty clay, occasionally flooded	Ao	15733	567946	m1zv	ms051	1997	1:20000
Alligator clay, frequently flooded	Ag	5031	567945	m1zt	ms051	1997	1:20000
Alligator, Tensas, and Dowling soils, frequently flooded	ATF	4342	567943	m1zr	ms051	1997	1:20000
Alligator clay, 0.5 to 2 percent slopes, occasionally flooded	Ac	64484	2693437	2rv60	ms053	1956	1:20000
Alligator, Dowling, and Forestdale soils, frequently flooded (alligator, alligator, forestdale)	An	18804	2693432	2rv64	ms053	1956	1:20000
Alligator clay, 0 to 0.5 percent slopes, occasionally flooded	Aa	15255	2693435	2rv5y	ms053	1956	1:20000
Alligator-Dowling clays, frequently flooded (alligator, alligator)	Am	10628	2693442	2rv63	ms053	1956	1:20000
Alligator silty clay loam, 0 to 2 percent slopes, rarely flooded	Ag	9154	568000	m21l	ms053	1956	1:20000
Alligator clay, 0.5 to 2 percent slopes, frequently flooded	Ad	4856	2693436	2rv61	ms053	1956	1:20000
Alligator clay, 2 to 5 percent slopes, rarely flooded	Ae	1435	567999	m21k	ms053	1956	1:20000
Alligator clay, 0 to 0.5 percent slopes, frequently flooded	Ab	1424	2693434	2rv5z	ms053	1956	1:20000
Alligator silty clay loam, 0 to 2 percent slopes, frequently flooded	Ah	1336	2693433	2rv62	ms053	1956	1:20000
Alligator silty clay loam, 2 to 5 percent slopes, rarely flooded	Ak	216	568002	m21n	ms053	1956	1:20000
Alligator clay, 0 to 1 percent slopes	4	101200	568107	m251	ms083	1997	1:24000
Tensas-Alligator complex, 0 to 3 percent slopes, occasionally flooded	30	23308	568125	m25m	ms083	1997	1:24000
Alligator clay, depressional	6	21847	568109	m253	ms083	1997	1:24000
Alligator, Tensas, and Dowling soils, frequently flooded	7	19494	568120	m25g	ms083	1997	1:24000
Tensas-Alligator-Urban land complex, 0 to 3 percent slopes	31	4385	568126	m25n	ms083	1997	1:24000
Alligator clay, 1 to 3 percent slopes	5	4206	568108	m252	ms083	1997	1:24000
Alligator silty clay loam, 0 to 1 percent slopes, rarely flooded	Ad	8651	568305	2v182	ms107	1961	1:24000
Alligator clay, 0 to 1/2 percent slopes (rarely flooded)	Aa	7447	568302	m2cb	ms107	1961	1:24000
Dowling silty clay and clay (alligator) (frequently flooded)	Do	2570	568312	m2cn	ms107	1961	1:24000
Alligator silty clay loam, 1/2 to 2 percent slopes (rarely flooded)	Ae	2077	568306	m2cg	ms107	1961	1:24000
Alligator clay, 1/2 to 2 percent slopes (rarely flooded)	Ab	670	568303	m2cc	ms107	1961	1:24000
Alligator silt loam, overwash, 1/2 to 2 percent slopes (rarely flooded)	Ac	487	568304	m2cd	ms107	1961	1:24000
Alligator and Dowling clays (sharkey)	Ae	45716	568352	m2dy	ms119	1956	1:24000
Alligator and Sharkey clays, nearly level phases	Ag	28326	568353	m2dz	ms119	1956	1:24000
Alligator silty clay, nearly level phase	Ac	12552	568350	m2dw	ms119	1956	1:24000
Alligator clay, 0 to 1 percent slopes, rarely flooded, east	Aa	3080	568348	2t233	ms119	1956	1:24000
Alligator clay, gently sloping phase	Ab	355	568349	m2dv	ms119	1956	1:24000
Alligator and Sharkey clays, gently sloping phases	Ah	344	568354	m2f0	ms119	1956	1:24000
Alligator silty clay, gently sloping phase	Ad	77	568351	m2dx	ms119	1956	1:24000
Sharkey, Alligator, and Dowling soils, frequently flooded (sharkey, alligator, sharkey)	Sr	103146	2693475	2rp1v	ms125	1960	1:20000
Alligator clay, 0.5 to 2 percent slopes, occasionally flooded	Ab	21492	2693454	2rp1m	ms125	1960	1:20000
Alligator clay, 0 to 0.5 percent slopes, occasionally flooded	Aa	5438	2693452	2rv5y	ms125	1960	1:20000
Alligator silty clay loam, 0 to 2 percent slopes	Ae	1416	568412	m2gw	ms125	1960	1:20000
Alligator clay, 0 to 2 percent slopes, frequently flooded	Ac	281	2693453	2rp1n	ms125	1960	1:20000
Alligator clay, 0.5 to 3 percent slopes	Ab	52775	568443	m2hw	ms133	1956	1:20000
Alligator silty clay, 0.5 to 3 percent slopes	Ag	32491	568447	m2j0	ms133	1956	1:20000
Alligator clay, 0 to 0.5 percent slopes	Aa	21187	568442	m2hv	ms133	1956	1:20000
Alligator silty clay loam, 0.5 to 3 percent slopes	Am	4095	568450	m2j3	ms133	1956	1:20000
Alligator clay, 3 to 7 percent slopes	Ac	2507	568444	m2hx	ms133	1956	1:20000
Alligator silty clay, 0 to 0.5 percent slopes	Ae	2280	568446	m2hz	ms133	1956	1:20000
Alligator silty clay, 3 to 7 percent slopes	Ah	1708	568448	m2j1	ms133	1956	1:20000
Alligator silty clay loam, 0 to 1 percent slopes, rarely flooded	Ak	213	568449	2v182	ms133	1956	1:20000
Alligator clay, 7 to 10 percent slopes	Ad	125	568445	m2hy	ms133	1956	1:20000
Alligator clay, 0 to 2 percent slopes	AcA	65244	568503	m2kt	ms135	1966	1:24000
Alligator clay, depressional	Ad	40731	568504	m2kv	ms135	1966	1:24000
Alligator silty clay loam, 0 to 2 percent slopes	AsA	8341	568505	m2kw	ms135	1966	1:24000
Alligator-Dowling association (alligator, alligator)	As	3377	568558	m2ml	ms137	1964	1:15840
Alligator clay, 0 to 1 percent slopes, rarely flooded, east	Ao	1446	568556	2t233	ms137	1964	1:15840
Alligator silty clay loam	Ar	649	568557	m2mk	ms137	1964	1:15840
Alligator clay, 0 to 1 percent slopes, rarely flooded, east	290	11380	1715976	2t233	ms143	2006	1:24000
Alligator clay, frequently flooded	291	1807	1715977	1vlm3	ms143	2006	1:24000
Alligator clay	Ar	4126	568675	m2rc	ms149	1962	1:15840
Alligator clay, 0.5 to 2 percent slopes	Ab	24864	568721	m2sv	ms151	1959	1:20000
Alligator clay, 0 to 0.5 percent slopes	Aa	10715	568720	m2st	ms151	1959	1:20000
Alligator silty clay loam, 0.5 to 2 percent slopes	Ae	4657	568724	m2sy	ms151	1959	1:20000
Alligator clay, 2 to 5 percent slopes	Ac	498	568722	m2sw	ms151	1959	1:20000
Alligator silty clay loam, 0 to 1 percent slopes, rarely flooded	Ad	205	568723	2v182	ms151	1959	1:20000
Alligator clay	Ag	15246	566765	m0rr	tn045	1963	1:15840
Alligator-Crevasse complex	At	10775	566766	m0rs	tn045	1963	1:15840

Map of Series Extent

Approximate geographic distribution of the ALLIGATOR 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).