Soil Data Explorer - TAWAS

Official Series Description

Lab Data Summary

Aggregate lab data for the TAWAS soil series. This aggregation is based on all pedons with a current taxon name of TAWAS, 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 TAWAS 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
93B	04N1130	S2004MI103001	TAWAS	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	46.2591629,-87.3019485
95A	40A1668	74WI075001	Tawas	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	45.0808334,-88.0694427
99	HN-079	1964-OH069-079	Tawas	4	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	41.4677505,-83.9795303

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the TAWAS 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 TAWAS 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 TAWAS 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 TAWAS 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 TAWAS 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 TAWAS 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 TAWAS 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).

Soil series sharing subgroup-level classification with TAWAS, 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. IN-2012-01-19-14 | Elkhart County - April 1974

   Relationship of soils to topography and underlying materials in the Oshtemo-Fox association (Soil Survey of Elkhart County, Indiana; 1974).

2. IN-2012-01-19-35 | Lake County - July 1972

   Oakville-Tawas, Plainfield-Watseka, Maumee-Bono-Warners, and Alida-Del Rey-Whitaker soil associations. The Oakville-Tawas association is on the left (Soil Survey of Lake County, Indiana; 1972).

3. IN-2012-01-19-43 | Pulaski County - January 1968

   Topographical relationships between the soils on sand ridges, in depressional outwash areas, and in organic deposits (Soil Survey of Pulaski County, Indiana; 1968).

4. MI-2010-09-07-16 | Marquette County - 2007

   Typical pattern of soils and parent material in the Goodman-Sundog-Greenwood association (Soil Survey of Marquette County, Michigan; 2007).

5. MI-2010-09-07-19 | Marquette County - 2007

   Typical pattern of soils and parent material in the Skanee-Munising-Gay association (Soil Survey of Marquette County, Michigan; 2007).

6. MI-2010-09-07-20 | Marquette County - 2007

   Typical pattern of soils and parent material in the Sundog-Minocqua-Channing association (Soil Survey of Marquette County, Michigan; 2007).

7. MI-2010-09-07-23 | Montmorency County - 2003

   Typical pattern of soils and underlying material in the Rubicon-Grayling-Tawas and Millersburg-Klacking-Horsehead associations (Soil Survey of Montmorency County, Michigan; 2003).

8. MI-2010-09-07-24 | Montmorency County - 2003

   Typical pattern of soils and underlying material in the Deford-Au Gres-Croswell association (Soil Survey of Montmorency County, Michigan; 2003).

9. MI-2010-09-07-25 | Montmorency County - 2003

   Typical pattern of soils and underlying material in the Lupton-Tawas and Mancelona-Millersburg-Blue Lake associations (Soil Survey of Montmorency County, Michigan; 2003).

10. MI-2010-09-10-06 | Keweenaw County Area - 2006

    Typical pattern of soils and parent material in the Deer Park-Rubicon-Croswell association (Soil Survey of Keweenaw County Area, Michigan; 2006).

11. MI-2010-09-10-07 | Keweenaw County Area - 2006

    Typical pattern of soils and parent material in the Garlic-Waiska-Alcona association (Soil Survey of Keweenaw County Area, Michigan; 2006).

12. MI-2010-09-10-08 | Keweenaw County Area - 2006

    Typical pattern of soils and parent material in the Lupton-Tawas-Deford association (Soil Survey of Keweenaw County Area, Michigan; 2006).

13. MI-2010-09-10-11 | Keweenaw County Area - 2006

    Typical pattern of soils and parent material in the Skanee-Munising-Gay association (Soil Survey of Keweenaw County Area, Michigan; 2006).

14. MI-2010-09-10-12 | Keweenaw County Area - 2006

    Typical pattern of soils and parent material in the Arcadian-Nipissing-Rock outcrop association (Soil Survey of Keweenaw County Area, Michigan; 2006).

15. MI-2012-02-06-02 | Alcona County - 1998

    Typical pattern of soils and parent material in the Algonquin-Negwegon-Springport association (adjacent to the Au Gres-Wakeley-Tawas association) (Soil Survey of Alcona County, Michigan; 1998).

16. MI-2012-02-06-04 | Alcona County - 1998

    Typical pattern of soils and parent material in the Klacking-McGinn association (adjacent to the Lupton-Tawas-Leafriver association) (Soil Survey of Alcona County, Michigan; 1998).

17. MI-2012-02-06-08 | Cheboygan County - September 1991

    Typical pattern of soils and parent material in the Cheboygan-Blue Lake and Tawas-Lupton associations (Soil Survey of Cheboygan County, Michigan; September 1991).

18. MI-2012-02-06-38 | Menominee County - September 1989

    Typical pattern of soils and parent material in the Deford-Wainola-Rousseau map unit (Soil Survey of Menominee County, Michigan; September 1989).

19. MI-2012-02-06-40 | Menominee County - September 1989

    Typical pattern of soils and parent material in the Pemene-Grayling-Lupton map unit (Soil Survey of Menominee County, Michigan; September 1989).

20. MI-2012-03-22-02 | Cheboygan County - September 1991

    Typical pattern of soils and parent material in the Cheboygan-Blue Lake and Tawas-Lupton associations (Soil Survey of Cheboygan County, MI; 1991).

Map Units

Map units containing TAWAS 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
Tawas muck	71	9043	190360	6d2n	mi001	1993	1:20000
Tawas-Au Gres complex, 0 to 4 percent slopes	12B	6031	190243	6cyw	mi001	1993	1:20000
Carbondale, Lupton, and Tawas mucks, 0 to 1 percent slopes	CbdaaA	49830	1455281	3110k	mi003	2007	1:24000
Tawas-Deford mucks	93	11829	1455305	1kvcb	mi003	2007	1:24000
Tawas muck	71	14030	191302	6f21	mi007	1998	1:12000
Tawas-Au Gres complex, 0 to 4 percent slopes	12B	6868	191251	6f0d	mi007	1998	1:12000
Tawas and Lupton mucks, 0 to 1 percent slopes	13	81	191330	2v14x	mi007	1998	1:12000
Tawas and Lupton mucks, 0 to 1 percent slopes	TawluA	13852	3155944	2v14x	mi009	1976	1:15840
Tawas-Ensley complex	Te	3711	241514	839s	mi009	1976	1:15840
Tawas-Leafriver mucks, 0 to 1 percent slopes	TawleA	3276	3155943	2ythr	mi009	1976	1:15840
Tawas muck	Ta	890	241513	839r	mi009	1976	1:15840
Tawas peat and muck	Ta	3459	189282	6byw	mi011	1964	1:20000
Tawas-Carbondale association	Td	1089	189285	6byz	mi011	1964	1:20000
Tawas association	Tc	1058	189284	6byy	mi011	1964	1:20000
Tawas peat, burned	Tb	744	189283	6byx	mi011	1964	1:20000
Tawas-Roscommon association	Te	714	189286	6bz0	mi011	1964	1:20000
Tawas muck, 0 to 1 percent slopes	TawaaA	19	3332456	2zdl9	mi011	1964	1:20000
Lupton and Tawas mucks, 0 to 1 percent slopes	8051	652	2441872	2myz2	mi013	1984	1:20000
Rousseau-Tawas-Sporley complex, 1 - 70 percent slopes, dissected	8195E	209	2450713	2n858	mi013	1984	1:20000
Tawas-Kinross complex, 0 to 2 percent slopes	8061	172	2441881	2myzc	mi013	1984	1:20000
Tawas-Carbondale association	TC	10014	190512	6d7k	mi029	1970	1:15840
Tawas muck	Ta	2756	190513	6d7l	mi029	1970	1:15840
Tawas and Lupton mucks, 0 to 1 percent slopes	TawluA	214	3187036	2v14x	mi029	1970	1:15840
Tawas-Leafriver mucks, 0 to 1 percent slopes	TawleA	41	3187035	2ythr	mi029	1970	1:15840
Tawas peat	8	28174	190616	6dbx	mi031	1988	1:15840
Carbondale, Lupton, and Tawas mucks, 0 to 1 percent slopes	CbdaaA	107907	415143	3110k	mi033	1989	1:15840
Tawas and Lupton mucks, 0 to 1 percent slopes	13	10903	189655	2v14x	mi039	1993	1:15840
Tawas-Leafriver mucks	51	8071	189723	6cf3	mi039	1993	1:15840
Carbondale, Lupton, and Tawas mucks, 0 to 1 percent slopes	CbdaaA	115724	1588028	3110k	mi041	1969	1:24000
Tawas muck	Ta	611	1588119	1q9kn	mi041	1969	1:24000
Tawas muck	Ta	13826	189374	6c1v	mi047	1968	1:20000
Epoufette-Tawas association	ET	3085	189776	6cgt	mi051	1966	1:15840
Roscommon-Brevort-Tawas association	RB	2327	189845	6ck1	mi051	1966	1:15840
Roscommon-Tawas association	RT	913	189852	6ck8	mi051	1966	1:15840
Tawas muck	Ta	561	189861	6ckk	mi051	1966	1:15840
Ausable, frequently flooded-Tawas complex, 0 to 1 percent slopes	42	3499	1455944	1kw0y	mi053	2007	1:24000
Lupton and Tawas mucks, 0 to 1 percent slopes	27	1632	1456366	1kwgk	mi053	2007	1:24000
Tawas-Kinross complex, 0 to 2 percent slopes	61	267	1456240	1kwbh	mi053	2007	1:24000
Evart-Tawas complex, 0 to 1 percent slopes, frequently flooded	31	111	1456369	1kwgn	mi053	2007	1:24000
Tawas-Roscommon complex	Ta	768	189579	6c8g	mi055	1963	1:15840
Tawas muck, snowy, 0 to 1 percent slopes	TawabA	2	3332530	2zdl8	mi055	1963	1:15840
Deford-Tawas complex, 0 to 1 percent slopes	77	10564	416160	fz1j	mi061	1989	1:20000
Kellogg-Vilas-Tawas complex, 0 to 12 percent slopes	8210B	1495	2484936	2pds7	mi061	1989	1:20000
Lupton and Tawas mucks, 0 to 1 percent slopes	8051	751	2483389	2pc5b	mi061	1989	1:20000
Tawas-Kinross complex, 0 to 2 percent slopes	8061	540	2483440	2pc6z	mi061	1989	1:20000
Ausable, frequently flooded-Tawas complex, 0 to 1 percent slopes	8042	303	2483387	2pc58	mi061	1989	1:20000
Rousseau-Tawas-Sporley complex, 1 - 70 percent slopes, dissected	8195E	242	2484884	2pdqk	mi061	1989	1:20000
Tonkey-Tawas complex, 0 to 1 percent slopes	8075	68	2483549	2pcbh	mi061	1989	1:20000
Tawas muck	Ta	2573	188200	69tz	mi067	1965	1:15840
Tawas and Lupton mucks, 0 to 1 percent slopes	13	17146	191712	2v14x	mi069	1995	1:15840
Meehan-Tawas-Wurtsmith complex, 0 to 12 percent slopes	438C	3736	191877	6fnl	mi069	1995	1:15840
Meehan-Tawas complex, 0 to 3 percent slopes	448A	989	191889	6fnz	mi069	1995	1:15840
Tawas-Au Gres complex, 0 to 4 percent slopes	12B	203	191711	6fh7	mi069	1995	1:15840
Tawas muck	71	44	191921	6fq0	mi069	1995	1:15840
Lupton and Tawas mucks, 0 to 1 percent slopes	27	8977	2452511	2nb18	mi071	1992	1:20000
Evart-Tawas complex, 0 to 1 percent slopes, frequently flooded	31	3349	2452516	2nb1f	mi071	1992	1:20000
Ausable, frequently flooded-Tawas complex, 0 to 1 percent slopes	42	1189	2452534	2nb20	mi071	1992	1:20000
Tawas-Kinross complex, 0 to 2 percent slopes	8061	165	2475140	2p2l7	mi071	1992	1:20000
Tonkey-Tawas complex, 0 to 1 percent slopes	8075	16	2478321	2p5wv	mi071	1992	1:20000
Tawas muck, snowy, 0 to 1 percent slopes	TawabA	790	3332550	2zdl8	mi073	1983	1:15840
Tawas muck, 0 to 1 percent slopes	TawaaA	347	3332551	2zdl9	mi073	1983	1:15840
Tawas and Lupton mucks, 0 to 1 percent slopes	13	15469	190626	2v14x	mi079	1998	1:12000
Tawas-Leafriver mucks	51	10331	190663	6ddf	mi079	1998	1:12000
Tawas muck, 0 to 3 percent slopes	TaA	90	188575	6b72	mi091	1957	1:20000
Tawas muck	Tm	3438	187607	696v	mi093	1968	1:20000
Carbondale, Lupton, and Tawas mucks, 0 to 1 percent slopes	CbdaaA	92121	3385778	3110k	mi095	2004	1:24000
Tawas-Spot-Finch complex, 0 to 3 percent slopes	94A	8915	631296	p5xd	mi095	2004	1:24000
Carbondale, Lupton, and Tawas mucks, 0 to 1 percent slopes	CbdaaA	79264	3385779	3110k	mi097	1994	1:20000
Carbondale and Tawas soils	57	82293	3385783	f88j	mi103	1999	1:24000
Carbondale, Lupton, and Tawas mucks, 0 to 1 percent slopes	CbdaaA	51407	395235	3110k	mi103	1999	1:24000
Tawas-Deford mucks	93	13492	395304	f8br	mi103	1999	1:24000
Tawas muck, snowy, 0 to 1 percent slopes	TawabA	4219	3332591	2zdl8	mi107	1982	1:15840
Carbondale, Lupton, and Tawas mucks, 0 to 1 percent slopes	CbdaaA	55038	415473	3110k	mi109	1985	1:20000
Tawas-Deford complex	44	21162	415480	fybl	mi109	1985	1:20000
Minocqua-Tawas complex	14	7060	415452	fy9p	mi109	1985	1:20000
Tawas-Banat-Nadeau complex, 0 to 15 percent slopes	54C	4488	415489	fybw	mi109	1985	1:20000
Lupton-Tawas association	35	3456	3385789	fybc	mi109	1985	1:20000
Tawas mucky peat	20	15752	192423	6g76	mi113	1983	1:15840
Rifle and Tawas peats, 0 to 2 percent slopes	Ra	23621	187324	68xq	mi117	1956	1:20000
Tawas and Lupton mucks, 0 to 1 percent slopes	13	37922	192185	2v14x	mi119	1997	1:12000
Tawas and Carlisle mucks	Tc	5809	187383	68zm	mi121	1966	1:15840
Tawas muck, snowy, 0 to 1 percent slopes	TawabA	973	3332617	2zdl8	mi123	1990	1:15840
Tawas mucky peat	77	9198	189946	6cn9	mi129	1987	1:15840
Croswell-Au Gres-Tawas complex, 0 to 18 percent slopes	120D	2251	1456543	1kwn8	mi131	2007	1:24000
Deford-Tawas complex, 0 to 1 percent slopes	90A	1611	1456501	1kwlx	mi131	2007	1:24000
Lupton and Tawas mucks, 0 to 1 percent slopes	59A	1181	1456460	1kwkl	mi131	2007	1:24000
Ausable, frequently flooded-Tawas complex, 0 to 1 percent slopes	8042	656	1674503	1t6g7	mi131	2007	1:24000
Tonkey-Tawas complex, 0 to 1 percent slopes	8075	235	1674806	1t6s0	mi131	2007	1:24000
Kellogg-Vilas-Tawas complex, 0 to 12 percent slopes	8210B	140	1674862	1t6tt	mi131	2007	1:24000
Tawas muck	Tc	3672	190218	6cy2	mi133	1966	1:15840
Tawas peat	Tp	264	190219	6cy3	mi133	1966	1:15840
Tawas loam, overwash	Ta	127	190217	6cy1	mi133	1966	1:15840
Tawas and Lupton mucks, 0 to 1 percent slopes	13	6061	241376	2v14x	mi135	2003	1:12000
Tawas-Leafriver mucks	51	3004	241391	835t	mi135	2003	1:12000
Tawas muck	71	56	241369	8353	mi135	2003	1:12000
Tawas and Lupton mucks, 0 to 1 percent slopes	13	22753	191442	2v14x	mi137	1998	1:12000
Tawas-Leafriver mucks	51	2888	191505	6f8l	mi137	1998	1:12000
Tawas muck	3	14950	190878	6dmc	mi141	1989	1:15840
Roscommon-Tawas complex	71	4028	190936	6dp7	mi141	1989	1:15840
Tawas and Lupton mucks, 0 to 1 percent slopes	13	41622	190978	2v14x	mi143	1999	1:12000
Tawas-Leafriver mucks	51	10202	191030	6ds8	mi143	1999	1:12000
Carbondale, Lupton, and Tawas mucks, 0 to 1 percent slopes	CbdaaA	78642	3385790	3110k	mi153	2007	1:24000
Ausable, Deford, and Tawas mucks, frequently flooded	65	17200	1457023	1kx4r	mi153	2007	1:24000
Deer Park-Deford-Tawas complex, 0 to 60 percent slopes	70F	6206	1456952	1kx2g	mi153	2007	1:24000
Wurtsmith-Tawas-Deford complex, 0 to 6 percent slopes	86B	5847	1457029	1kx4y	mi153	2007	1:24000
Tawas-Roscommon association	22	56971	190755	6dhd	mi600	1983	1:15840
Lupton and Tawas soils, 0 to 1 percent slopes	2	9938	435344	gm0c	mi605	2004	1:24000
Tawas-Deford complex, 0 to 4 percent slopes	13	7172	800734	vw74	mi605	2004	1:24000
Bete Grise-Tawas complex, 0 to 4 percent slopes, stony	196B	701	801602	vx44	mi605	2004	1:24000
Tawas-Leafriver complex, 0 to 4 percent slopes	42	403	2378185	2ktpn	mi606		1:12000
Tawas and Lupton mucks, 0 to 1 percent slopes	TawluA	44	3332676	2v14x	mi614	2005	1:12000
Tawas muck	627	31	432951	gjj5	mn001	1996	1:20000
Tawas muck	627	37207	397673	fbt5	mn007	1991	1:24000
Tawas muck	627	5449	430558	gg0z	mn029	1993	1:20000
Tawas muck	627	19689	398459	fcmj	mn061	1982	1:24000
Tawas muck	627	36952	398906	fd2y	mn077	1989	1:24000
Tawas muck, map 22-30, 0 to 1 percent slopes	627	8595	394897	f7xm	mn135	1999	1:24000
Lupton, Cathro, and Tawas soils, 0 to 1 percent slopes	405A	10264	1444414	1kh10	wi003	2006	1:12000
Lupton, Cathro, and Tawas soils, 0 to 1 percent slopes	405A	22493	433515	gk3c	wi007	2005	1:12000
Lupton and Tawas soils, seeped, 2 to 15 percent slopes	485C	99	1147408	17hz5	wi007	2005	1:12000
Lupton and Tawas soils, seeped, 2 to 15 percent slopes	485C	472	448560	h1rp	wi013	2004	1:12000
Lupton, Cathro, and Tawas soils, 0 to 1 percent slopes	405A	1219	781219	v6xm	wi031	2005	1:12000
Lupton and Tawas soils, seeped, 2 to 15 percent slopes	485C	169	781288	v6zv	wi031	2005	1:12000
Lupton, Cathro, and Tawas soils, 0 to 1 percent slopes	405A	3693	782087	v7tm	wi051	2006	1:12000
Lupton, Cathro, and Tawas soils, 0 to 1 percent slopes	405A	306	2427695	2mh6r	wi095	1978	1:15840
Lupton and Tawas soils, seeped, 2 to 15 percent slopes	485C	80	2427698	2mh6v	wi095	1978	1:15840
Lupton, Cathro, and Tawas soils, 0 to 1 percent slopes	405A	22578	627370	p1tr	wi099	2006	1:12000
Pence-Sconsin-Tawas complex, 0 to 25 percent slopes	746D	138	757625	tfcj	wi107	2006	1:12000
Lupton, Cathro, and Tawas soils, 0 to 1 percent slopes	405A	19193	625395	nzs1	wi113	2006	1:12000
Lupton, Cathro, and Tawas soils, 0 to 1 percent slopes	405A	14884	635991	pbsv	wi129	2002	1:12000

Map of Series Extent

Approximate geographic distribution of the TAWAS 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).