Soil Data Explorer - GRATTAN

Official Series Description

Lab Data Summary

Aggregate lab data for the GRATTAN soil series. This aggregation is based on all pedons with a current taxon name of GRATTAN, 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 GRATTAN 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
89	40A1536	S1957WI097001	Grattan	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	44.5205574,-89.6338882
89	40A1537	S1957WI097002	Grattan	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	44.5522232,-89.5286102
96	97P0141	S1996MI019001	Grattan	n/a	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	44.5844444,-85.9930556
98	07N0558	F2007MI121004	Grattan	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.2518333,-86.3474444
98	07N0559	F2007MI121005	Grattan	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.3390556,-86.4061667
98	S80MI-81-3	S1980MI081003	Grattan	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.2476389,-85.5238611
98	S80MI-81-7	S1980MI081007	Grattan	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.2462778,-85.5348611

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the GRATTAN 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 GRATTAN 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 GRATTAN 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 GRATTAN 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 GRATTAN 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 GRATTAN 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 GRATTAN 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 GRATTAN, 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. MI-2012-02-06-46 | Oceana County - April 1996

   Typical pattern of soils and underlying material in the Benona-Spinks-Grattan association (Soil Survey of Oceana County, Michigan; April 1996).

Map Units

Map units containing GRATTAN 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
Pipestone-Grattan association	Px	1163	2673438	2qz4m	mi011	1964	1:20000
Grattan sand, 0 to 6 percent slopes	GtB	996	2673447	2qz4z	mi011	1964	1:20000
Eastport-Grattan sands, 6 to 12 percent slopes	EgC	873	2673440	2qz4p	mi011	1964	1:20000
Grattan association, undulating	GxB	499	2673454	2qz57	mi011	1964	1:20000
Grattan sand, moderately fine substratum, 0 to 6 percent slopes	GwB	444	2673451	2qz54	mi011	1964	1:20000
Eastport-Grattan sands, 0 to 6 percent slopes	EgB	412	2673439	2qz4n	mi011	1964	1:20000
Grattan sand, 6 to 12 percent slopes	GtC	392	2673448	2qz50	mi011	1964	1:20000
Eastport-Grattan sands, 12 to 18 percent slopes	EgD	114	2673442	2qz4r	mi011	1964	1:20000
Eastport-Grattan association, rolling	EhC	96	2673445	2qz4v	mi011	1964	1:20000
Grattan sand, moderately fine substratum, 6 to 12 percent slopes	GwC	82	2673452	2qz55	mi011	1964	1:20000
Eastport-Grattan sands, 12 to 18 percent slopes, moderately eroded	EgD2	50	2673443	2qz4s	mi011	1964	1:20000
Grattan loamy sand, moderately fine substratum, 0 to 6 percent slopes	GsB	31	2673446	2qz4y	mi011	1964	1:20000
Eastport-Grattan sands, 25 to 45 percent slopes	EgF	30	2673444	2qz4t	mi011	1964	1:20000
Eastport-Grattan sands, 6 to 12 percent slopes, moderately eroded	EgC2	27	2673441	2qz4q	mi011	1964	1:20000
Grattan sand, moderately fine substratum, 12 to 18 percent slopes	GwD	7	2673453	2qz56	mi011	1964	1:20000
Grattan sand, 18 to 25 percent slopes	GtE	4	2673450	2qz52	mi011	1964	1:20000
Grattan sand, 12 to 18 percent slopes	GtD	3	2673449	2qz51	mi011	1964	1:20000
Grattan sand, 6 to 12 percent slopes	120C	57	2673572	2qz5n	mi017	1978	1:20000
Grattan sand, 0 to 6 percent slopes	120B	35	2673570	2qz5m	mi017	1978	1:20000
Eastport-Grattan sands, 0 to 6 percent slopes	123B	23	2673575	2qz4n	mi017	1978	1:20000
Eastport-Grattan sands, 12 to 18 percent slopes	123D	2	2673576	2qz4r	mi017	1978	1:20000
Grattan sand, loamy substratum, 0 to 6 percent slopes	114B	1	2673569	2qz5q	mi017	1978	1:20000
Grattan sand, 0 to 6 percent slopes	GtB	72	2673512	2qz67	mi035	1977	1:15840
Grattan sand, 6 to 18 percent slopes	GtC	3	2673513	2qz68	mi035	1977	1:15840
Grattan-Ocqueoc-Ingalls association, undulating	GQB	3097	2673498	2qz64	mi051	1966	1:15840
Grattan-Covert association, undulating	GNB	2293	2673496	2qz62	mi051	1966	1:15840
Grattan sand, 0 to 6 percent slopes	GtB	1942	2673482	2qz5m	mi051	1966	1:15840
Grattan sand, loamy substratum, 0 to 6 percent slopes	GmB	1582	2673485	2qz5q	mi051	1966	1:15840
Grattan sand, 6 to 12 percent slopes	GtC	1109	2673483	2qz5n	mi051	1966	1:15840
Grattan-Menominee association, undulating	GOB	420	2673497	2qz63	mi051	1966	1:15840
Chelsea-Grattan association, undulating	CKB	266	2673487	2qz5s	mi051	1966	1:15840
Grattan sand, 12 to 25 percent slopes	GtE	207	2673484	2qz5p	mi051	1966	1:15840
Grattan sand, 4 to 12 percent slopes	GaC	134	2673583	6876	mi057	1975	1:12000
Grattan sand, 0 to 6 percent slopes	64B	1545	187184	2w64d	mi081	1984	1:15840
Grattan sand, 6 to 12 percent slopes	64C	384	187185	2w64h	mi081	1984	1:15840
Grattan sand, 0 to 6 percent slopes	57B	15178	192573	2w64d	mi105	1992	1:15840
Grattan sand, 6 to 12 percent slopes	57C	2922	192575	2w64h	mi105	1992	1:15840
Grattan sand, 18 to 35 percent slopes	57E	1302	192577	2w64k	mi105	1992	1:15840
Grattan sand, loamy substratum, 0 to 6 percent slopes	42B	960	192559	6gcl	mi105	1992	1:15840
Grattan sand, 12 to 18 percent slopes	57D	877	192576	2w64j	mi105	1992	1:15840
Grattan sand, 35 to 50 percent slopes	57F	242	192578	6gd6	mi105	1992	1:15840
Grattan sand, 0 to 10 percent slopes, severely eroded	57B3	215	192574	6gd2	mi105	1992	1:15840
Grattan sand, 0 to 6 percent slopes	GtB	95	2673558	2qz5m	mi111	1976	1:15840
Grattan sand, 6 to 12 percent slopes	GtC	9	2673559	2qz5n	mi111	1976	1:15840
Grattan-Covert association, undulating	GNB	8	2673560	2qz62	mi111	1976	1:15840
Grattan sand, 0 to 6 percent slopes	60B	10036	186502	2w64d	mi123	1990	1:15840
Grattan, banded substratum-Metea complex, 6 to 18 percent slopes	135C	7513	186435	6801	mi123	1990	1:15840
Grattan sand, wet substratum, 0 to 6 percent slopes	122B	6368	186424	67zp	mi123	1990	1:15840
Grattan, banded substratum-Metea complex, 0 to 6 percent slopes	135B	5659	186434	6800	mi123	1990	1:15840
Grattan sand, 6 to 18 percent slopes	60C	5479	186503	2w64f	mi123	1990	1:15840
Grattan sand, banded substratum, 0 to 6 percent slopes	121B	2440	186422	67zm	mi123	1990	1:15840
Grattan, banded substratum-Spinks complex, 0 to 6 percent slopes	125B	2286	186425	67zq	mi123	1990	1:15840
Grattan-Coloma complex, 0 to 6 percent slopes	130B	2125	186428	67zt	mi123	1990	1:15840
Grattan, banded substratum-Coloma complex, 6 to 18 percent slopes	131C	1604	186432	67zy	mi123	1990	1:15840
Grattan sand, banded substratum, 6 to 18 percent slopes	121C	1543	186423	67zn	mi123	1990	1:15840
Grattan sand, 18 to 35 percent slopes	60D	1473	186504	2w64k	mi123	1990	1:15840
Grattan, banded substratum-Spinks complex, 6 to 18 percent slopes	125C	1409	186426	67zr	mi123	1990	1:15840
Grattan, banded substratum-Metea complex, 18 to 30 percent slopes	135E	1308	186436	6802	mi123	1990	1:15840
Grattan-Coloma complex, 6 to 18 percent slopes	130C	936	186429	67zv	mi123	1990	1:15840
Grattan, banded substratum-Coloma complex, 0 to 6 percent slopes	131B	607	186431	67zx	mi123	1990	1:15840
Grattan-Coloma complex, 18 to 30 percent slopes	130E	240	186430	67zw	mi123	1990	1:15840
Grattan, banded substratum-Metea complex, 30 to 60 percent slopes	135F	223	186437	6803	mi123	1990	1:15840
Grattan, banded substratum-Coloma complex, 18 to 30 percent slopes	131E	167	186433	67zz	mi123	1990	1:15840
Grattan, banded substratum-Spinks complex, 18 to 30 percent slopes	125E	80	186427	67zs	mi123	1990	1:15840
Grattan sand, 0 to 6 percent slopes	49B	23774	189047	2w64d	mi127	1992	1:15840
Grattan sand, 6 to 18 percent slopes	49C	7991	189049	2w64f	mi127	1992	1:15840
Grattan sand, 18 to 35 percent slopes	49E	1728	189051	2w64k	mi127	1992	1:15840
Grattan sand, loamy substratum, 0 to 6 percent slopes	53B	1279	189056	6bql	mi127	1992	1:15840
Grattan sand, 0 to 6 percent slopes, severely eroded	49B3	1046	189048	6bqb	mi127	1992	1:15840
Grattan sand, 35 to 70 percent slopes	49F	857	189052	6bqg	mi127	1992	1:15840
Grattan sand, 6 to 18 percent slopes, severely eroded	49C3	403	189050	6bqd	mi127	1992	1:15840
Grattan sand, loamy substratum, 6 to 12 percent slopes	53C	379	189057	6bqm	mi127	1992	1:15840
Grattan sand, 0 to 6 percent slopes	RoB	7355	190197	2w64d	mi133	1966	1:15840
Grattan sand, 6 to 12 percent slopes	RoC	4681	190198	2w64h	mi133	1966	1:15840
Grattan sand, 12 to 18 percent slopes	RoD	4479	190199	2w64j	mi133	1966	1:15840
Grattan sand, 18 to 35 percent slopes	RoE	2423	190200	2w64k	mi133	1966	1:15840
Chelsea complex, 0 to 6 percent slopes	ClB	1233	192653	6ggm	mi139	1967	1:15840
Grattan sand, 4 to 12 percent slopes	10C	3084	186657	6876	mi145	1991	1:15840
Grattan sand, 2 to 7 percent slopes, slightly eroded	ReB1	1748	2673647	2qz3v	mi151	1955	1:15840
Grattan sand, 7 to 14 percent slopes, slightly eroded	ReC1	953	2673649	2qz3x	mi151	1955	1:15840
Grattan sand, 0 to 2 percent slopes, slightly eroded	ReA1	433	2673646	2qz3t	mi151	1955	1:15840
Grattan sand, 14+ percent slopes, slightly eroded	ReD1	234	2673651	2qz3z	mi151	1955	1:15840
Grattan sand, 7 to 14 percent slopes, moderately or severely eroded	ReC2	103	2673650	2qz3y	mi151	1955	1:15840
Grattan sand, 14+ percent slopes, moderately or severely eroded	ReD3	103	2673652	2qz40	mi151	1955	1:15840
Grattan sand, 2 to 7 percent slopes, moderately or severely eroded	ReB3	11	2673648	2qz3w	mi151	1955	1:15840
Grattan sand, 4 to 12 percent slopes	Gr	7	2423118	2mbg3	mi155	1967	1:12000
Grattan sand, 0 to 6 percent slopes	49B	1083	186328	2w64d	mi159	1984	1:15840
Grattan sand, 0 to 6 percent slopes	23B	83714	190756	2w64d	mi600	1983	1:15840
Grattan sand, 0 to 6 percent slopes	57B	12005	193265	2w64d	mi614	2005	1:12000
Grattan sand, 6 to 12 percent slopes	57C	2972	193266	2w64h	mi614	2005	1:12000
Grattan sand, 18 to 35 percent slopes	57E	1931	193268	2w64k	mi614	2005	1:12000
Grattan sand, 12 to 18 percent slopes	57D	1270	193267	2w64j	mi614	2005	1:12000
Grattan sand, 35 to 50 percent slopes	57F	995	193269	6h3h	mi614	2005	1:12000
Grattan loamy sand, 0 to 3 percent slopes	GrA	2159	290161	9qy1	ny019	1995	1:24000
Grattan loamy sand, 3 to 8 percent slopes	GrB	1665	290162	9qy2	ny019	1995	1:24000
Plainfield and Grattan soils, very steep	PvF	585	290222	9r00	ny019	1995	1:24000

Map of Series Extent

Approximate geographic distribution of the GRATTAN 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).