Soil Data Explorer - COHAGEN

Official Series Description

Lab Data Summary

Aggregate lab data for the COHAGEN soil series. This aggregation is based on all pedons with a current taxon name of COHAGEN, 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 COHAGEN were used in the calculation. Source: KSSL snapshot (updated 2020-03-13). 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 COHAGEN 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 COHAGEN 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 COHAGEN 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 COHAGEN 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).

Competing Series

Soil series competing with COHAGEN 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 COHAGEN 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 COHAGEN 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 terrace figure.

There are insufficient data to create the 3D flats position figure.

Soil series sharing subgroup-level classification with COHAGEN, 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. ND-2012-02-07-30 | Dunn County - April 1982

   Typical pattern of soils and underlying material in the Cabba-Cohagen-Rhoades association (Soil Survey of Dunn County, North Dakota; April 1982).

2. ND-2012-02-07-31 | Dunn County - April 1982

   Typical pattern of soils and underlying material in the Morton-Rhoades-Savage association (Soil Survey of Dunn County, North Dakota; April 1982).

3. ND-2012-02-07-32 | Dunn County - April 1982

   Typical pattern of soils and underlying material in the Vebar-Parshall association (Soil Survey of Dunn County, North Dakota; April 1982).

4. SD-2012-03-15-08 | Corson County - July 1995

   Pattern of soils and parent material in the Vebar association (Soil Survey of Corson County, SD; 1995).

5. SD-2012-03-15-09 | Corson County - July 1995

   Pattern of soils and parent material in the Flasher-Vebar association (Soil Survey of Corson County, SD; 1995).

6. SD-2012-03-15-10 | Corson County - July 1995

   Pattern of soils and parent material in the Bullock-Parchin association (Soil Survey of Corson County, SD; 1995).

7. SD-2012-03-16-07 | Ziebach County - March 1990

   Pattern of soils and parent material in the Bullock-Vebar-Parchin association (Soil Survey of Ziebach County, SD; 1990).

Map Units

Map units containing COHAGEN 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
Parshall-Cohagen fine sandy loams, 4 to 15 percent slopes	136D	2317	342878	chsl	mt011	1992	1:24000
Macar-Lisk-Cohagen complex, 8 to 25 percent slopes	983E	6829	343825	cjs4	mt017	1995	1:24000
Lisk-Cohagen-Dast fine sandy loams, 8 to 25 percent slopes	971E	3967	343822	cjs1	mt017	1995	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	1277	342086	2r6td	mt025	1991	1:24000
Cohagen-Lisk-Rock outcrop, soft complex, 8 to 45 percent slopes	154	235	2451198	2n8nx	mt079	1986	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	2803	345663	2r6td	mt109	1956	1:31680
Cohagen-Dast fine sandy loams, 4 to 25 percent slopes	483E	1408	1899180	21r7w	mt111	1966	1:20000
Tally-Cohagen fine sandy loams, 25 to 60 percent slopes	943F	3598	346990	cn27	mt615	1992	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	25238	2525733	2r6td	nd001	1983	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	68	2699050	2r6td	nd007	1998	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	7613	2563626	2r6td	nd011	1969	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	4231	2661726	2r6td	nd015	1967	1:20000
Cohagen-Vebar-Parshall fine sandy loams, 9 to 35 percent slopes	E1301F	49	2661745	2rdb3	nd015	1967	1:20000
Vebar-Cohagen fine sandy loams, 9 to 15 percent slopes	E1333D	39680	2707198	2r6tf	nd025	1981	1:20000
Vebar-Cohagen fine sandy loams, 6 to 15 percent slopes, very stony	E1656D	3199	2707199	2rdb7	nd025	1981	1:20000
Cohagen-Vebar-Parshall fine sandy loams, 9 to 35 percent slopes	E1301F	607	2758470	2rdb3	nd025	1981	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	276	2707197	2r6td	nd025	1981	1:20000
Vebar-Cohagen fine sandy loams, 3 to 6 percent slopes	E1333B	22	2758471	cdtm	nd025	1981	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	16925	2661814	2r6td	nd029	1979	1:20000
Cohagen-Vebar-Parshall fine sandy loams, 9 to 35 percent slopes	E1301F	15056	2661843	2rdb3	nd029	1979	1:20000
Vebar-Cohagen fine sandy loams, 9 to 15 percent slopes	E1333D	8429	2661815	2r6tf	nd029	1979	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	C977C	25	2595461	2q832	nd029	1979	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	46	2759732	2r6td	nd033	1985	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	58560	2525843	2r6td	nd037	1985	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	22384	2525792	2r6td	nd041	1986	1:20000
Vebar-Cohagen fine sandy loams, 9 to 15 percent slopes	E1333D	6855	2661883	2r6tf	nd047	1992	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	5505	2661882	2r6td	nd047	1992	1:20000
Cohagen-Vebar-Parshall fine sandy loams, 9 to 35 percent slopes	E1301F	1107	2661894	2rdb3	nd047	1992	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	C977C	440	2566541	2q832	nd047	1992	1:20000
Vebar-Cohagen fine sandy loams, 9 to 15 percent slopes	E1333D	2104	2662015	2r6tf	nd051	1992	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	1859	2662014	2r6td	nd051	1992	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	C977C	1311	2566627	2q832	nd051	1992	1:24000
Cohagen-Vebar-Parshall fine sandy loams, 9 to 35 percent slopes	E1301F	754	2662029	2rdb3	nd051	1992	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	13134	2715053	2r6td	nd053	2003	1:24000
Vebar-Cohagen fine sandy loams, 3 to 6 percent slopes	E1333B	7383	2715052	cdtm	nd053	2003	1:24000
Vebar-Cohagen fine sandy loams, 6 to 15 percent slopes, very stony	E1656D	282	2715060	2rdb7	nd053	2003	1:24000
Vebar-Cohagen fine sandy loams, 9 to 15 percent slopes	E1333D	73	2759713	2r6tf	nd053	2003	1:24000
Vebar-Cohagen fine sandy loams, 9 to 15 percent slopes	E1333D	4831	2662487	2r6tf	nd055	1974	1:20000
Cohagen-Vebar-Parshall fine sandy loams, 9 to 35 percent slopes	E1301F	3794	2662497	2rdb3	nd055	1974	1:20000
Cohagen-Vebar-Parshall fine sandy loams, 9 to 35 percent slopes	E1301F	13593	2699251	2rdb3	nd057	1976	1:20000
Vebar-Cohagen fine sandy loams, 9 to 15 percent slopes	E1333D	10014	2699404	2r6tf	nd057	1976	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	3909	2699382	2r6td	nd057	1976	1:20000
Lefor-Cohagen fine sandy loam, 9 to 15 percent slopes	E6153D	833	2699281	2r6tk	nd057	1976	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	39954	2699222	2r6td	nd059	1998	1:20000
Cohagen-Vebar-Parshall fine sandy loams, 9 to 35 percent slopes	E1301F	74	2759668	2rdb3	nd059	1998	1:20000
Vebar-Cohagen fine sandy loams, 9 to 15 percent slopes	E1333D	69	2759670	2r6tf	nd059	1998	1:20000
Vebar-Cohagen-Zahl complex, 9 to 25 percent slopes	E3615E	972	2662537	2r4hr	nd061	1988	1:24000
Vebar-Cohagen fine sandy loams, 9 to 15 percent slopes	E1333D	13612	2525921	2r6tf	nd065	1971	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	11299	2525920	2r6td	nd065	1971	1:20000
Cohagen-Vebar-Parshall fine sandy loams, 9 to 35 percent slopes	E1301F	3713	2525919	2rdb3	nd065	1971	1:20000
Vebar-Cohagen fine sandy loams, 6 to 15 percent slopes, very stony	E1656D	503	2525927	2rdb7	nd065	1971	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	11130	2699132	2r6td	nd085	1992	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	3773	2707396	2r6td	nd087	1974	1:20000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	21447	2715991	2r6td	nd089	1965	1:20000
Lefor-Cohagen fine sandy loam, 9 to 15 percent slopes	E6153D	482	2716035	2r6tk	nd089	1965	1:20000
Vebar-Cohagen-Zahl complex, 9 to 25 percent slopes	E3615E	8066	2662601	2r4hr	nd105	1993	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	C977C	358	2595615	2q832	nd105	1993	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	E1333C	139	2662594	2r6td	nd105	1993	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	VhB	49952	356225	2r6td	sd031	1986	1:24000
Cohagen-Cabba-Rock outcrop complex, 6 to 70 percent slopes	CgF	9805	356150	cylq	sd031	1986	1:24000
Cohagen fine sandy loam, 15 to 50 percent slopes	CoE	43080	2942849	cy57	sd063	1984	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	VcC	15983	355809	2r6td	sd063	1984	1:24000
Vebar-Cohagen fine sandy loams, 9 to 25 percent slopes	VcD	15340	2837872	cy7r	sd063	1984	1:24000
Cohagen-Rock outcrop-Cabba variant complex, 3 to 100 percent slopes	CrF	11336	355733	cy58	sd063	1984	1:24000
Vebar-Cohagen fine sandy loams, 6 to 9 percent slopes	VaC	136065	2837868	2r6td	sd105	1977	1:24000
Cohagen-Vebar complex, 15 to 40 percent slopes	CdE	6761	2942850	cx0f	sd105	1977	1:24000
Vebar-Cohagen fine sandy loam, 6 to 15 percent slopes	VcC	29862	355904	cybs	sd137	1985	1:24000
Cohagen-Vebar-Bullock fine sandy loams, 6 to 25 percent slopes	CrD	22745	355834	cy8j	sd137	1985	1:24000
Cohagen-Vebar fine sandy loams, 15 to 40 percent slopes	CoE	18513	355833	cy8h	sd137	1985	1:24000
Cohagen-Rock outcrop complex, 9 to 50 percent slopes	CkF	5687	355832	cy8g	sd137	1985	1:24000
Cohagen-Skelridge-like complex, 10 to 30 percent slopes	5460		3136861	2ypny	wy629		1:24000
Cohagen-Wilspring-like-Macar-like complex, 20 to 65 percent slopes	5520		2969070	2wxlr	wy629		1:24000
Weed-Cohagen-Crackerville, very stony complex, 20 to 50 percent slopes	5539		3136868	2ypp4	wy629		1:24000

Map of Series Extent

Approximate geographic distribution of the COHAGEN 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).