Soil Data Explorer - DARWIN

Official Series Description

Lab Data Summary

Aggregate lab data for the DARWIN soil series. This aggregation is based on all pedons with a current taxon name of DARWIN, 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 DARWIN 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
107B	M0708713	2007MO087013	DARWIN	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.9091667,-95.0006944
107B	M0916508	2009MO165008	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.4882222,-95.0601667
107B	M0916510	2009MO165010	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.49525,-95.0568889
107B	M0916511	2009MO165011	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.4893889,-95.0558056
107B	M0919509	2009MO195009	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.2543611,-93.42475
109	M8804127	1988MO041027	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.5222056,-92.7948611
115A	66IL059001	1966IL059001	Darwin	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	37.803899,-88.2269874
115A	82P0126	81IL165001	Darwin	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	37.7472229,-88.3863907
115A	40A2752	S1950IL101007	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.6180573,-87.6444473
115A	40A1978	S1963IL101001	Darwin	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.8213882,-87.5749969
115B	78IL119057	1978IL119057	Darwin	1	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.7804029,-90.0623413
115B	78IL119058	1978IL119058	Darwin	1	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.7339619,-90.0563077
115B	M8712112	1987MO121012	Darwin	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.9672203,-92.3450012
115B	M8712121	1987MO121021	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.9672203,-92.3450012
115B	M8712135	1987MO121035	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.9672203,-92.3450012
115B	M8812108	1988MO121008	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.9672203,-92.3450012
115B	M8905314	1989MO053014	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.9362778,-92.544525
115B	M8905316	1989MO053016	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.9672203,-92.3450012
115B	M8905341	1989MO053041	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.9444167,-92.5473333
115B	M9001908	1990MO019008	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.9028206,-92.4679493
115B	M9001911	1990MO019011	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.8313115,-92.4147284
115B	M9001925	1990MO019025	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.9078206,-92.433226
115B	M9001944	1990MO019044	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.1341495,-92.4085272
115B	M9001964	1990MO019064	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.6812366,-92.3098366
115B	M9101903	1991MO019003	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.781382,-92.3787558
115B	M9104101	1991MO041001	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.9672203,-92.3450012
115B	M0418305	2004MO183005	DARWIN	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.8359722,-90.1230833
115B	M0618352	2006MO183052	DARWIN	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.8251389,-90.1219444
115B	M0618355	2006MO183055	DARWIN	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.8341389,-90.1233056
115B	M0621904	2006MO219004	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.6097222,-91.1170833
115B	M0715104	2007MO151004	DARWIN	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.6822778,-91.7346111
115B	M0718321	2007MO183021	DARWIN	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.5861667,-90.7973611
115B	M0808963	2008MO089063	DARWIN	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.0126944,-92.8391111
115C	78IL013002	1978IL013002	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.8704095,-90.5896278
115C	78IL083003	1978IL083003	Darwin	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.0082576,-90.5540741
115C	81IL009007	1981IL009007	Darwin	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.9590344,-90.5296665

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the DARWIN 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 DARWIN 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 DARWIN 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 DARWIN 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 hills figure.

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

Competing Series

Soil series competing with DARWIN 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 DARWIN 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 DARWIN 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 hills figure.

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

Soil series sharing subgroup-level classification with DARWIN, 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. IL-2010-09-01-70 | Schuyler County - 2003

   Typical pattern of soils and underlying material in the Beaucoup-Darwin-Tice association (Soil Survey of Schuyler County, Illinois; 2003).

2. IL-2011-06-01-06 | Brown County - 1988

   Typical cross section showing the relationship of parent material to soils in Brown County (Soil Survey of Brown County, Illinois; 1988).

3. IL-2011-08-04-95 | Randolph County - 1988

   Pattern of soils and parent material in the Darwin-Fults association (Soil Survey of Randolph County, Illinois; 1988).

Map Units

Map units containing DARWIN 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
Darwin silty clay, bedrock substratum, 0 to 2 percent slopes	1954	269	404383	fksm	ia045	1978	1:15840
Darwin variant silty clay, 0 to 2 percent slopes	953	117	404476	fkwm	ia045	1978	1:15840
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	6415	601834	n680	il003	2002	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded, long duration	3071L	4035	601835	2tbrp	il003	2002	1:12000
Darwin and Jacob silty clays, undrained, 0 to 2 percent slopes, frequently flooded	1845A	2604	602613	n724	il003	2002	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	42	601833	n67z	il003	2002	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	1168	172996	5t0j	il009	1984	1:12000
Darwin silty clay, undrained, 0 to 2 percent slopes, commonly flooded	1071A	696	172977	5szx	il009	1984	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded, long duration	3071L	73	175523	2tbrp	il013	1986	1:15840
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	2529	729485	sh2s	il017	2003	1:12000
Darwin silty clay, 0 to 2 percent slopes, rarely flooded	7071A	721	1444919	1khk9	il017	2003	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	1254	1596011	2yp4c	il023	2006	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	6119	849141	2yp4c	il033	2004	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	598	175485	2yp4c	il047	1967	1:15840
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	2590	211694	2yp4c	il059	1966	1:20000
Darwin silt loam, 0 to 2 percent slopes, occasionally flooded, overwash	8071A+	208	211695	2yp4d	il059	1966	1:20000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	1144	211775	73cg	il061	1968	1:15840
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	51	714033	rz0b	il069	2003	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	11154	1538809	1nn80	il077	2006	1:12000
Darwin and Jacob silty clays, undrained, 0 to 2 percent slopes, frequently flooded	1845A	5310	1538810	1nn81	il077	2006	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded, long duration	3071L	1184	1538808	2tbrp	il077	2006	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	854	1540871	2yp4c	il077	2006	1:12000
Darwin silty clay, 0 to 2 percent slopes, rarely flooded	7071A	1331	1586459	1q7v3	il079	2005	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	1049	1585922	2yp4c	il079	2005	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded, long duration	3071L	2041	728466	2tbrp	il083	2002	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	537	728467	sg0y	il083	2002	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	558	817755	wfy6	il087	2005	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	80	1603843	1qtxw	il087	2005	1:12000
Darwin silty clay, occasionally flooded	8071	9727	176758	5xxw	il101	1952	1:42240
Darwin silt loam, 0 to 2 percent slopes, occasionally flooded, overwash	8071A+	1176	176759	2yp4d	il101	1952	1:42240
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded, long duration	8071L	11214	198881	6nyj	il119	2001	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded, long duration	3071L	1087	198927	2tbrp	il119	2001	1:12000
Darwin-Aquents-Urban land complex, 0 to 2 percent slopes, occasionally flooded, long duration	2071L	814	200826	6qz8	il119	2001	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	713	1428090	1jy1f	il127	2004	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded, long duration	3071L	118	808073	2tbrp	il127	2004	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	14	808072	w3vv	il127	2004	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded, long duration	8071L	29	184127	65ll	il133	1998	1:12000
Darwin silty clay, undrained, 0 to 2 percent slopes, occasionally flooded	1071A	21	184061	65jg	il133	1998	1:12000
Darwin silty clay, 0 to 2 percent slopes, rarely flooded	7071A	168	1672174	1t413	il137	1984	1:15840
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	147	2542196	2qxpx	il137	1984	1:15840
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	6017	201955	6s4p	il149	2001	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded, long duration	3071L	20	201318	2tbrp	il149	2001	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	8	606807	ncff	il151	2003	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	898	749007	t4dj	il153	2004	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	814	748942	t4bf	il153	2004	1:12000
Darwin and Jacob silty clays, undrained, 0 to 2 percent slopes, frequently flooded	1845A	361	748937	t4b8	il153	2004	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded, long duration	8071L	4528	200563	6qps	il157	2001	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded, long duration	3071L	4333	200545	2tbrp	il157	2001	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	484	2026822	2yp4c	il159	1967	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded, long duration	8071L	5659	183127	64kb	il163	1997	1:12000
Darwin-Aquents-Urban land complex, 0 to 2 percent slopes, occasionally flooded, long duration	2071L	2317	182901	6qz8	il163	1997	1:12000
Darwin silty clay loam, undrained, 0 to 2 percent slopes, frequently flooded	1071A	1632	182843	6485	il163	1997	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	2997	178895	2yp4c	il165	1974	1:15840
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	2150	202240	6sfw	il169	2000	1:12000
Darwin silty clay, undrained, 0 to 2 percent slopes, commonly flooded	1071A	788	202234	6sfp	il169	2000	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	8534	2542107	2qvgl	il171	1984	1:12000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	8071A	2820	199534	6pml	il181	2001	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded	3071A	491	199584	6pp6	il181	2001	1:12000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded, long duration	3071L	413	207354	2tbrp	il181	2001	1:12000
Darwin silty clay, frequently flooded	3071	184	179656	60yc	il185	1962	1:20000
Darwin silty clay, wet	1071	86	179592	60w9	il185	1962	1:20000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded, long duration	66122	478	2533813	2tbrp	mo031	1978	1:24000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	66079	821	2533746	2qp9j	mo053	1993	1:24000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	66079	3609	2533744	2qp9j	mo111	1986	1:24000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	66079	11280	2533745	2qp9j	mo121	1991	1:24000
Darwin silty clay, 0 to 2 percent slopes, occasionally flooded	66079	5236	2533743	2qp9j	mo157	1983	1:24000
Darwin silty clay, 0 to 2 percent slopes, frequently flooded, long duration	66122	809	2533814	2tbrp	mo157	1983	1:24000
Darwin silty clay, 0 to 2 percent slopes, rarely flooded	66080	1713	888250	yt97	mo195	1989	1:24000

Map of Series Extent

Approximate geographic distribution of the DARWIN 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).