Soil Data Explorer - CROATAN

Official Series Description

Lab Data Summary

Aggregate lab data for the CROATAN soil series. This aggregation is based on all pedons with a current taxon name of CROATAN, 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 CROATAN 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
152A	S66_012	1978-FL131-S66_012	Croatan	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	30.4117393,-86.0449219
n/a	04N1077	S2004NC155002	Croatan	4	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 CROATAN 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 CROATAN 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 CROATAN 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 CROATAN 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 CROATAN 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 CROATAN 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 CROATAN 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 CROATAN, 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. FL-2011-05-31-02 | Bradford County - 1991

   Pattern of soils in a flatwoods landscape that includes slightly elevated areas, depressions, and flood plains (Soil Survey of Bradford County, Florida; 1991).

2. FL-2012-04-26-17 | Union County - October 1991

   Pattern of soils on a flatwoods landscape that includes slightly elevated areas, depressions, and flood plains (Soil Survey of Union County, Florida; October 1991).

3. NC-2012-02-07-02 | Carteret County - September 1987

   Very poorly drained soils high in organic matter are on narrow flood plains. Well drained soils low in organic matter are near drainageways (Soil Survey of Carteret County, North Carolina; September 1987).

4. NC-2012-02-07-09 | Craven County - March 1989

   On uplands of the Talbot and Wicomico surfaces, soil texture is influenced by the sediment in which the soils formed. Natural drainage and organic matter content are related to position on the landscape (Soil Survey of Craven County, North Carolina; March 1989).

5. NC-2012-02-07-26 | Jones County - November 1981

   The distinctive pattern of the Rains-Goldsboro-Lynchburg, Pantego-Tohunta, and Croatan general soil map units. Croatan muck is slightly higher in elevation than the surrounding mineral soils (Soil Survey of Jones County, North Carolina; November 1981).

6. NC-2012-02-07-36 | Pamlico County - August 1987

   The soils on the uplands of the Talbot Surface formed in loamy or clayey sediment or in muck (Soil Survey of Pamlico County, North Carolina; August 1987).

Map Units

Map units containing CROATAN 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
Pamlico and Croatan mucks	14	5126	631626	p681	fl007	1988	1:15840
Pamlico and Croatan mucks, frequently flooded	37	2550	631644	p68m	fl007	1988	1:15840
Croatan, Surrency, and Pantego soils, depressional	54	33661	1481039	1lq4g	fl013	1997	1:20000
Croatan, Kinston, and Surrency soils, frequently flooded	68	16031	1481053	1lq4x	fl013	1997	1:20000
Croatan, Rutlege, and Surrency soils, depressional	60	6962	1481045	1lq4n	fl013	1997	1:20000
Croatan and Pickney soils, depressional	5	8420	1425313	1jv4v	fl033	1998	1:24000
Croatan muck, depressional	12	1140	1425320	1jv52	fl033	1998	1:24000
Croatan-Surrency complex, frequently flooded	45	15440	1472765	1lfjk	fl045	1997	1:24000
Dorovan-Croatan complex, depressional	13	3076	1472734	1lfhk	fl045	1997	1:24000
Surrency, Pantego, and Croatan soils, depressional	57	25605	322747	btv6	fl077	2004	1:24000
Torhunta-Lynn Haven-Croatan complex, frequently flooded	47	23965	322736	bttv	fl077	2004	1:24000
Croatan muck, frequently flooded	34	2450	132922	4g9t	fl089	1989	1:15840
Surrency, Starke, and Croatan soils, depressional	28	16670	1425222	1jv1x	fl123	1998	1:24000
Pamlico and Croatan mucks	14	8470	1414578	1jgzk	fl125	1989	1:15840
Pamlico and Croatan mucks, frequently flooded	37	2860	1414602	1jh0b	fl125	1989	1:15840
Croatan-Dorovan mucks	16	60090	1399042	1hytd	fl129	1988	1:24000
Meggett and Croatan soils, frequently flooded	52	6660	1399079	1hyvl	fl129	1988	1:24000
Grady and Croatan soils, 0 to 2 percent slopes, ponded	GCA	12855	2580370	2qdy0	ga251	2011	1:24000
Dasher-Dorovan-Croatan association, ponded, 0 to 1 percent slopes	DDA	139330	2408352	2sxqy	ga299	2008	1:24000
Croatan, Pamlico, and Surrency soils, ponded, 0 to 1 percent slopes, rarely flooded	CPA	24670	2408351	2lv2r	ga299	2008	1:24000
Dasher-Dorovan-Croatan association, ponded, 0 to 1 percent slopes	DDA	156705	2686761	2sxqy	ga611	2012	1:24000
Croatan, Pamlico and Surrency soils, ponded, 0 to 1 percent slopes, rarely flooded	CPA	10775	2686754	2rz85	ga611	2012	1:24000
Dasher-Dorovan-Croatan association, ponded, 0 to 1 percent slopes	DDA	24003	2686803	2sxqy	ga626	2013	1:24000
Croatan, Pamlico and Surrency soils, ponded, 0 to 1 percent slopes, rarely flooded	CPA	11339	2686802	2rz85	ga626	2013	1:24000
Croatan and Johnston soils, 0 to 2 percent slopes, frequently flooded	88	39918	332606	c537	ms059	1997	1:24000
Dorovan and Pamlico mucks (dorovan and croatan)	Dp	5401	332850	c5c3	ms073	1969	1:20000
Dorovan-Croatan association, frequently flooded	DC	2639	333117	c5mq	ms091	1983	1:20000
Johnston-Croatan complex, frequently flooded	Jt	2421	333125	c5mz	ms091	1983	1:20000
Dorovan-Croatan association	DC	17531	333537	c628	ms109	1980	1:20000
Dorovan and Croatan soils, ponded	DO	4144	333602	c64c	ms111	1997	1:20000
Johnston and Croatan soils, frequently flooded	13	5502	334085	c6my	ms131	1997	1:24000
Croatan muck	Ct	11344	111561	3r2r	nc013	1986	1:24000
Croatan muck, ponded, 0 to 2 percent slopes	Cr	10697	115477	2tn9n	nc017	1983	1:24000
Croatan muck, frequently flooded	CT	8047	115470	3w4v	nc017	1983	1:24000
Croatan muck, ponded, 0 to 2 percent slopes	CT	28479	115534	2tn9n	nc019	1983	1:24000
Croatan muck	CT	20084	115578	3w8b	nc031	1984	1:24000
Croatan muck, ponded, 0 to 2 percent slopes	Ct	20664	115639	2tn9n	nc047	1986	1:24000
Croatan muck, ponded, 0 to 2 percent slopes	CT	24740	115735	2tn9n	nc049	1984	1:24000
Croatan muck, ponded, 0 to 2 percent slopes	CT	12263	811075	2tn9n	nc051	1981	1:24000
Croatan muck, ponded, 0 to 2 percent slopes	CtA	5886	1865954	2tn9n	nc061	1955	1:24000
Croatan muck, ponded, 0 to 2 percent slopes	Ct	42056	115964	2tn9n	nc103	1979	1:24000
Croatan muck, rarely flooded	Ct	197	111127	3qmr	nc117	1985	1:24000
Croatan muck, ponded, 0 to 2 percent slopes	Ct	33207	116075	2tn9n	nc133	1984	1:24000
Croatan muck	CT	6696	116120	3wtt	nc137	1984	1:24000
Croatan muck, ponded, 0 to 2 percent slopes	Ct	57837	116162	2tn9n	nc141	1986	1:24000
Ponzer muck, siliceous subsoil variant (Croatan)	Pr	1566	114787	3vft	nc155	1972	1:20000

Map of Series Extent

Approximate geographic distribution of the CROATAN 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).