Soil Data Explorer - COHASSET

Official Series Description

Lab Data Summary

Aggregate lab data for the COHASSET soil series. This aggregation is based on all pedons with a current taxon name of COHASSET, 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 COHASSET 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
15	UCD5852026	58-CA-52-026	COHASSET	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.9241982,-122.6721802
15	UCD6449016	64-CA-49-016x	Cohasset	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.6884613,-122.6547165
15	72C0147	S1972CA055005	COHASSET	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.5675011,-122.4250031
22A	83P0260	82CA061314	Cohasset	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.1040573,-120.7388
22A	91P0726	90CA109108	Cohasset	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	37.9000015,-120.026947
22A	01N0611	99CA057001	Cohasset	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.2661095,-120.7844467
22A	01N0612	99CA057002	Cohasset	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.2661095,-120.7844467
22A	01N0613	99CA057003	Cohasset	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.2661095,-120.7844467
22A	01N0598	S2000CA017003	Cohasset	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	38.8876648,-120.6415024
22A	01N0617	S2000CA091001	Cohasset	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.538887,-121.0458298
22A	01N0618	S2000CA091002	Cohasset	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.5395012,-121.0431671
22A	01N0619	S2000CA091003	Cohasset	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.5436668,-121.0429993
22B	UCD5452002	54-CA-52-002	COHASSET	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.4443626,-121.6781693
22B	UCD5452004	54-CA-52-004	COHASSET	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.1222916,-121.5667725
22B	UCD5452005	54-CA-52-005	COHASSET	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.3232155,-121.7528534
22B	UCD5552002	55-CA-52-002	COHASSET	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.3377724,-121.7341156
22B	UCD5552007	55-CA-52-007	COHASSET	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.4209023,-121.8122635
22B	UCD6045106	60-CA-45-106	COHASSET	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.6621017,-121.7216797
22B	UCD6045107	60-CA-45-107	COHASSET	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.5863838,-121.747551
22B	UCD7747134	77-CA-47-134x	COHASSET	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	41.2738266,-121.8362274
5	UCD7447103	74-CA-47-103x	COHASSET	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	41.2750473,-122.328392
n/a	98P0325	97CA089003	COHASSET	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	n/a
n/a	98P0326	97CA089004	COHASSET	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	n/a
n/a	98P0327	97CA089005	COHASSET	5	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 COHASSET 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 COHASSET 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 COHASSET 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 COHASSET 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 flats position figure.

Competing Series

Soil series competing with COHASSET 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 COHASSET 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 COHASSET 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 flats position figure.

Soil series sharing subgroup-level classification with COHASSET, 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 COHASSET 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
Cohasset gravelly clay loam, 10 to 50 percent slopes, MLRA 15	CmFsn	9	816490	2w8bw	ca055	1974	1:24000
Cohasset gravelly loam, 15 to 30 percent slopes	CmEsn	3	816489	wdmc	ca055	1974	1:24000
Cohasset gravelly loam, 50 to 75 percent slopes	CmGsn	1	816491	wdmf	ca055	1974	1:24000
Cohasset gravelly clay loam, 10 to 50 percent slopes, MLRA 15	CmF	1924	459693	2w8bw	ca097	1968	1:20000
Cohasset gravelly loam, 50 to 75 percent slopes	CmG	649	459694	hfbv	ca097	1968	1:20000
Cohasset gravelly loam, 15 to 30 percent slopes	CmE	598	459692	hfbs	ca097	1968	1:20000
Cohasset stony loam, 0 to 30 percent slopes	CmD	52088	459967	hfmn	ca607	1967	1:20000
Cohasset stony loam, 10 to 50 percent slopes, MLRA 22B	CmE	24822	459968	2w8bv	ca607	1967	1:20000
Cohasset loam, 0 to 30 percent slopes	ClD	19864	459966	hfmm	ca607	1967	1:20000
Cohasset very stony loam, moderaterately deep, 8 to 50 percent slopes	CoE	4052	459970	hfmr	ca607	1967	1:20000
Cohasset-Aiken stony loams, 0 to 30 percent slopes	CpD	3166	459971	hfms	ca607	1967	1:20000
Cohasset-McCarthy complex, 30 to 50 percent slopes	CrE	2228	459973	hfmv	ca607	1967	1:20000
Cohasset-McCarthy complex, 0 to 30 percent slopes	CrD	2004	459972	hfmt	ca607	1967	1:20000
Cohasset very stony loam, 50 to 70 percent slopes	CnF	1485	459969	hfmq	ca607	1967	1:20000
Cohasset-McCarthy complex, 50 to 70 percent slopes	CrG	953	459974	hfmw	ca607	1967	1:20000
Cohasset gravelly sandy loam, 15 to 50 percent slopes, MLRA 22B	CfEte	53	2766066	2w8bx	ca607	1967	1:20000
Cohasset loam, 50 to 65 percent slopes	CdFte	17	2766067	hgdb	ca607	1967	1:20000
Cohasset gravelly loam, 10 to 30 percent slopes	CfDte	12	2766065	hgdd	ca607	1967	1:20000
Cohasset cobbly loam, 5 to 30 percent slopes	CoD	7821	460204	hfw9	ca619	1970	1:24000
Cohasset cobbly loam, 15 to 50 percent slopes	CoE	4856	460205	2w8bz	ca619	1970	1:24000
Cohasset loam, summits, 2 to 15 percent slopes	CmB	3590	460201	2w8by	ca619	1970	1:24000
Cohasset loam, backslopes, 5 to 30 percent slopes	CmD	1844	460203	2w8c3	ca619	1970	1:24000
Cohasset-McCarthy cobbly loams, 15 to 50 percent slopes	CsE	1483	460206	hfwc	ca619	1970	1:24000
Cohasset loam, shoulders, 3 to 20 percent slopes	CmC	1086	460202	2w8c0	ca619	1970	1:24000
Cohasset-McCarthy cobbly loams, 50 to 75 percent slopes	CsF	1036	460207	hfwd	ca619	1970	1:24000
Cohasset cobbly loam, 15 to 50 percent slopes	139	3500	460303	2w8bz	ca620	1975	1:24000
Cohasset cobbly loam, 15 to 30 percent slopes	138	3310	460302	hfzg	ca620	1975	1:24000
Cohasset cobbly loam, 5 to 15 percent slopes	137	3150	460301	hfzf	ca620	1975	1:24000
Cohasset loam, shoulders, 3 to 20 percent slopes	135	800	460299	2w8c0	ca620	1975	1:24000
Cohasset loam, backslopes, 5 to 30 percent slopes	136	625	460300	2w8c3	ca620	1975	1:24000
Cohasset loam, summits, 2 to 15 percent slopes	134	575	460298	2w8by	ca620	1975	1:24000
Cohasset cobbly loam, 15 to 50 percent slopes	CoE	8160	462223	hhzf	ca624	1968	1:20000
Cohasset loam, backslopes, 10 to 30 percent slopes, dry	CmD	4983	462221	2w8c4	ca624	1968	1:20000
Cohasset loam, shoulders, 3 to 20 percent slopes, dry	CmC	2882	462220	2w8c1	ca624	1968	1:20000
Cohasset cobbly loam, 3 to 15 percent slopes	CoC	2414	462222	hhzd	ca624	1968	1:20000
Cohasset cobbly sandy loam, 9 to 50 percent slopes	ClE	1875	462218	hhz8	ca624	1968	1:20000
Cohasset sandy loam, 9 to 30 percent slopes	CkD	1055	462217	hhz7	ca624	1968	1:20000
Cohasset loam, summits, 2 to 20 percent slopes, dry	CmB	752	462219	2w8c2	ca624	1968	1:20000
Cohasset very cobbly loam, 16 to 51 percent slopes	CbE	4958	462340	hj36	ca628	1963	1:20000
Cohasset very cobbly loam, moderately deep, 16 to 51 percent slopes	CcE	3016	462343	hj39	ca628	1963	1:20000
Cohasset very cobbly sandy loam, 16 to 51 percent slopes	CoE	2553	462345	hj3c	ca628	1963	1:20000
Cohasset very cobbly loam, 3 to 16 percent slopes	CbC	794	462339	hj35	ca628	1963	1:20000
Cohasset very cobbly loam, 51 to 71 percent slopes	CbF	509	462341	hj37	ca628	1963	1:20000
Cohasset very cobbly sandy loam, 3 to 16 percent slopes	CoC	484	462344	hj3b	ca628	1963	1:20000
Cohasset very cobbly loam, moderately deep, 3 to 16 percent slopes	CcC	480	462342	hj38	ca628	1963	1:20000
Cohasset loam, shoulders, 3 to 20 percent slopes, dry	CaC	133	462337	2w8c1	ca628	1963	1:20000
Cohasset loam, backslopes, 10 to 30 percent slopes, dry	CaD	110	462338	2w8c4	ca628	1963	1:20000
Cohasset stony loam, 10 to 30 percent slopes	CgD	18543	460705	hgdg	ca645	1961	1:20000
Cohasset loam, 10 to 30 percent slopes	CdD	16609	460699	hgd8	ca645	1961	1:20000
Cohasset loam, very deep, 10 to 30 percent slopes	CeD	16477	460702	hgdc	ca645	1961	1:20000
Cohasset gravelly loam, 10 to 30 percent slopes	CfD	16372	460703	hgdd	ca645	1961	1:20000
Cohasset stony loam, 10 to 50 percent slopes, MLRA 22B	CgE	5386	460706	2w8bv	ca645	1961	1:20000
Cohasset gravelly sandy loam, 15 to 50 percent slopes, MLRA 22B	CfE	4657	460704	2w8bx	ca645	1961	1:20000
Cohasset loam, 30 to 50 percent slopes	CdE	2436	460700	hgd9	ca645	1961	1:20000
Lyonsville and Cohasset stony soils, 10 to 30 percent slopes	LtD	1897	460814	hghz	ca645	1961	1:20000
Lyonsville and Cohasset soils, 10 to 30 percent slopes	LsD	1409	460813	hghy	ca645	1961	1:20000
Cohasset loam, 50 to 65 percent slopes	CdF	185	460701	hgdb	ca645	1961	1:20000
Cohasset stony loam, moderately deep, 10 to 30 percent slopes, eroded	ChD2	160	460707	hgdj	ca645	1961	1:20000
Cohasset very stony loam, moderaterately deep, 8 to 50 percent slopes	CoEsh	144	2766069	hfmr	ca645	1961	1:20000
Cohasset stony loam, 0 to 30 percent slopes	CmDsh	109	2766068	hfmn	ca645	1961	1:20000
Cohasset stony loam, 0 to 30 percent slopes	CmDsh	199	1868336	20q4x	ca707	1983	1:24000
Cohasset stony loam, 10 to 50 percent slopes, MLRA 22B	CmEsh	101	1868379	2w8bv	ca707	1983	1:24000
Cohasset very stony loam, moderaterately deep, 8 to 50 percent slopes	CoEsh	50	1868381	20q6c	ca707	1983	1:24000
Cohasset loam, 30 to 50 percent slopes	CdEtc	7	1882998	216dw	ca707	1983	1:24000
Cohasset stony loam, 10 to 50 percent slopes, MLRA 22B	CmEsc	71	1528645	2w8bv	ca708	1984	1:24000
Cohasset stony loam, 0 to 30 percent slopes	CmDsc	17	1528583	1n9m4	ca708	1984	1:24000
Crozier-McCarthy-Cohasset complex, 2 to 30 percent slopes	CTE	7779	464634	hlh6	ca719	1982	1:24000
Crozier-Cohasset complex, 2 to 30 percent slopes	CSE	6351	464630	hlh2	ca719	1982	1:24000
Crozier-McCarthy-Cohasset complex, 30 to 75 percent slopes	CTG	5592	464636	hlh8	ca719	1982	1:24000
Cohasset-Aiken-Crozier complex, 2 to 30 percent slopes	COE	4778	464624	hlgw	ca719	1982	1:24000
Crozier-Cohasset complex, 30 to 50 percent slopes	CSF	2805	464632	hlh4	ca719	1982	1:24000
Crozier-Cohasset complex, 2 to 30 percent slopes, altered	CSE5	2137	464631	hlh3	ca719	1982	1:24000
Crozier-McCarthy-Cohasset complex, 2 to 30 percent slopes, altered	CTE5	1995	464635	hlh7	ca719	1982	1:24000
Cohasset-Aiken-Crozier complex, 2 to 30 percent slopes, altered	COE5	1623	464625	hlgx	ca719	1982	1:24000
Cohasset cobbly loam, 30 to 50 percent slopes	CoEnc	1017	1587857	1q996	ca719	1982	1:24000
Kinkel variant-Cohasset complex, 2 to 30 percent slopes	KIE	750	464715	hlkt	ca719	1982	1:24000
Aiken-Cohasset complex, 2 to 30 percent slopes, altered	AIE5	643	464607	hlgb	ca719	1982	1:24000
Crozier-Cohasset complex, 30 to 50 percent slopes, terraced	CSF6	628	464633	hlh5	ca719	1982	1:24000
Kinkel variant-Cohasset complex, 2 to 30 percent slopes, altered	KIE5	379	464716	hlkv	ca719	1982	1:24000
Kinkel variant-Cohasset complex, 30 to 50 percent slopes	KIF	330	464717	hlkw	ca719	1982	1:24000
Cohasset-Aiken-Crozier complex, 30 to 50 percent slopes	COF	200	464626	hlgy	ca719	1982	1:24000
Aiken-Cohasset complex, 2 to 30 percent slopes	AIE	112	464606	hlg9	ca719	1982	1:24000
Cohasset cobbly loam, 5 to 30 percent slopes	CoDnc	71	1587854	1q993	ca719	1982	1:24000
Cohasset cobbly loam, 15 to 50 percent slopes	139pc	9	1585908	2w8bz	ca719	1982	1:24000
Cohasset cobbly loam, 5 to 15 percent slopes	137pc	4	1585906	1q788	ca719	1982	1:24000
Cohasset-McCarthy cobbly loams, 50 to 75 percent slopes	CsFnc	0	1587863	1q99d	ca719	1982	1:24000
Cohasset-McCarthy association, 2 to 30 percent slopes	112	11862	464862	hlqk	ca724	1985	1:24000
Cohasset loam, 2 to 30 percent slopes	110	9439	464860	hlqh	ca724	1985	1:24000
Cohasset-McCarthy association, 30 to 50 percent slopes	113	8272	464863	hlql	ca724	1985	1:24000
McCarthy-Cohasset association rhyolitic substratum, 30 to 75 percent slopes	115	7721	464865	hlqn	ca724	1985	1:24000
Cohasset-McCarthy association, rhyolitic substratum, 5 to 30 percent slopes	114	3140	464864	hlqm	ca724	1985	1:24000
Crozier-Cohasset loams, 5 to 30 percent slopes complex	116	3120	464866	hlqp	ca724	1985	1:24000
Aiken-Cohasset loams, 2 to 30 percent slopes complex	101	1060	464851	hlq6	ca724	1985	1:24000
Cohasset-Hartless variant complex, 2 to 30 percent slopes	111	580	464861	hlqj	ca724	1985	1:24000
Crozier-Cohasset loams, 30 to 50 percent slopes complex	117	289	464867	hlqq	ca724	1985	1:24000

Map of Series Extent

Approximate geographic distribution of the COHASSET 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).