Soil Data Explorer - AASTAD

Official Series Description

Lab Data Summary

Aggregate lab data for the AASTAD soil series. This aggregation is based on all pedons with a current taxon name of AASTAD, 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 AASTAD 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
102A	UMN3643	S1983MN1553643	Aastad	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	45.6136932,-96.6377106
102A	UMN3677	S1983MN1553677	Aastad	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	45.6454468,-96.6405182
55B	78P0295	77ND073007	Aastad	3	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	46.3588905,-97.8286133
55B	78P0296	77ND073007A	Aastad	n/a	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	46.3588676452637,-97.8289947509766
55B	90P0188	88ND073007	Aastad	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	46.3544235229492,-97.6928787231445
55B	40A0002	S1956ND081001	Aastad	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	46.0799789428711,-97.6303787231445
55B	40A0003	S1956ND081006	Aastad	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	46.16748046875,-97.653434753418
55B	09N0931	S2009ND039003	Aastad	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	47.6147778,-98.23825

Water Balance

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

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 AASTAD, 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-2012-02-08-47 | Sargent County - January 1964

   Major soils and some minor soils in the undulating Forman-Aastad soil association (Soil Survey of Sargent County, North Dakota; January 1964).

2. ND-2012-02-08-48 | Sargent County - January 1964

   Rolling landscape in the Forman-Buse soil association (Soil Survey of Sargent County, North Dakota; January 1964).

3. SD-2010-11-01-15 | Spink County - 2009

   Pattern of soils and underlying materials in the Forman-Cresbard-Cavour association (Soil Survey of Spink County, South Dakota; 2009).

4. SD-2012-03-14-13 | Clark County - 1999

   Typical pattern of soils and underlying material in the Barnes-Svea-Buse association (Soil Survey of Clark County, SD; 1999).

5. SD-2012-03-15-18 | Day County - August 1997

   Typical pattern of soils and underlying material in the Nutley-Sinai and Poinsett-Waubay-Forman associations (Soil Survey of Day County, SD; 1997).

6. SD-2012-03-15-19 | Day County - August 1997

   Typical pattern of soils and underlying material in the Forman-Buse-Parnell association (Soil Survey of Day County, SD; 1997).

7. SD-2012-03-15-25 | Deuel County - November 1997

   Typical pattern of soils and parent material in the Forman-Aastad-Buse association (Soil Survey of Deuel County, SD; 1997).

Map Units

Map units containing AASTAD 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
Aastad clay loam, 1 to 3 percent slopes	AaA	2227	397244	2w8fj	mn041	1970	1:12000
Forman-Aastad complex, 3 to 6 percent slopes	J240B	11696	1650237	1sd6g	mn081	2007	1:12000
Forman-Aastad complex, 3 to 6 percent slopes	J240B	17218	1650262	1sd78	mn083	2008	1:12000
Forman-Aastad complex, 1 to 4 percent slopes	FmA	98	428335	2w8dv	mn149	1966	1:15840
Aastad clay loam, 1 to 3 percent slopes	AaA	43	428308	2w8fj	mn149	1966	1:15840
Forman-Aastad complex, 3 to 6 percent slopes	J240B	11203	1650276	1sd7q	mn173	1979	1:20000
Aastad-Cresbard loams, 0 to 3 percent slopes	G137A	19	2506012	2pwz9	nd021	1989	1:20000
Forman-Aastad loams, 3 to 6 percent slopes	G193B	10	2575259	2pwzn	nd021	1989	1:20000
Forman-Aastad loams, west, 0 to 3 percent slopes	G658A	18290	2571399	2q5vx	nd049	1987	1:20000
Forman-Aastad loams, west, 3 to 6 percent slopes	G658B	12568	2571400	2q5vy	nd049	1987	1:20000
Forman-Aastad loams, west, 0 to 3 percent slopes	F658A	1018	2585603	2q5fc	nd049	1987	1:20000
Forman-Aastad loams, west, 3 to 6 percent slopes	F658B	536	2585754	2q5fd	nd049	1987	1:20000
Aastad-Tonka complex, west, 0 to 3 percent slopes	F655A	445	2585726	2q5f6	nd049	1987	1:20000
Forman-Aastad loams, west, 3 to 6 percent slopes	G658B	6123	2577223	2q5vy	nd055	1974	1:20000
Forman-Aastad loams, west, 0 to 3 percent slopes	G658A	2613	2577164	2q5vx	nd055	1974	1:20000
Forman-Aastad loams, west, 0 to 3 percent slopes	F658A	4424	2585529	2q5fc	nd061	1988	1:24000
Forman-Aastad-Tonka complex, west, 3 to 6 percent slopes	F659B	612	2585537	2q5fg	nd061	1988	1:24000
Forman-Aastad-Tonka complex, west, 0 to 3 percent slopes	F659A	249	2585552	2q5ff	nd061	1988	1:24000
Aastad-Tonka complex, west, 0 to 3 percent slopes	F655A	172	2585544	2q5f6	nd061	1988	1:24000
Forman-Aastad loams, west, 3 to 6 percent slopes	F658B	102	2585550	2q5fd	nd061	1988	1:24000
Aastad loam, west, 3 to 6 percent slopes, drainageway	F656B	20	2585522	2q5f8	nd061	1988	1:24000
Aastad-Parnell complex, west, 0 to 3 percent slopes	F654A	1	2585543	2q5f5	nd061	1988	1:24000
Forman-Aastad loams, 3 to 6 percent slopes	G193B	7923	2581116	2pwzn	nd073	1992	1:20000
Aastad-Forman loams, 0 to 3 percent slopes	G193A	5901	2581115	2pwzm	nd073	1992	1:20000
Forman-Aastad-Parnell complex, 0 to 6 percent slopes	G198B	555	2581136	2pwzw	nd073	1992	1:20000
Aastad-Wyard-Tonka complex, 0 to 3 percent slopes	G196A	56	2506013	2pwzr	nd073	1992	1:20000
Aastad-Forman-Parnell complex, 0 to 3 percent slopes	G198A	29	2581135	2pwzv	nd073	1992	1:20000
Forman-Aastad loams, west, 0 to 3 percent slopes	F658A	205	2585345	2q5fc	nd075	1972	1:20000
Aastad-Tonka complex, west, 0 to 3 percent slopes	F655A	1	2624634	2q5f6	nd075	1972	1:20000
Forman-Aastad complex, 1 to 4 percent slopes	J225B	8388	2945662	2w8dv	nd077	2005	1:12000
Forman-Aastad loams, 3 to 6 percent slopes	G193B	4117	2577412	2pwzn	nd077	2005	1:12000
Aastad-Forman loams, 0 to 3 percent slopes	G193A	4067	2579430	2pwzm	nd077	2005	1:12000
Aastad-Wyard-Tonka complex, 0 to 3 percent slopes	G196A	3744	2577416	2pwzr	nd077	2005	1:12000
Aastad-Wyard-Tonka complex, 0 to 3 percent slopes	J201A	2299	1544925	1nvm9	nd077	2005	1:12000
Aastad-Forman loams, 0 to 3 percent slopes	I403A	1819	2641073	1nyyz	nd077	2005	1:12000
Forman-Aastad loams, 3 to 6 percent slopes	I403B	1491	2641155	1nyz0	nd077	2005	1:12000
Aastad-Wyard-Tonka complex, 0 to 3 percent slopes	I325A	378	2641171	1nyws	nd077	2005	1:12000
Aastad-Forman-Tonka complex, 0 to 3 percent slopes	G199A	3	2577408	2pwzx	nd077	2005	1:12000
Forman-Aastad-Parnell complex, 0 to 6 percent slopes	G198B	78237	2579555	2pwzw	nd081	1959	1:12000
Aastad-Forman-Parnell complex, 0 to 3 percent slopes	G198A	58453	2579504	2pwzv	nd081	1959	1:12000
Aastad-Forman loams, 0 to 3 percent slopes	G193A	41409	2579567	2pwzm	nd081	1959	1:12000
Forman-Aastad loams, 3 to 6 percent slopes	G193B	29217	2579489	2pwzn	nd081	1959	1:12000
Aastad-Forman-Tonka complex, 0 to 3 percent slopes	G199A	10380	2579478	2pwzx	nd081	1959	1:12000
Forman-Aastad-Tonka complex, 0 to 6 percent slopes	G199B	5040	2579507	2pwzy	nd081	1959	1:12000
Forman-Aastad loams, undulating	FoB	2638	341579	cgfp	nd081	1959	1:12000
Aastad-Forman loams, 0 to 3 percent slopes	I403A	2454	2641230	1nyyz	nd081	1959	1:12000
Forman-Aastad complex, 1 to 4 percent slopes	J225B	2404	2945663	2w8dv	nd081	1959	1:12000
Aastad loam	Ab	1015	341553	cgdv	nd081	1959	1:12000
Aastad-Cresbard loams, 0 to 3 percent slopes	G137A	992	2579540	2pwz9	nd081	1959	1:12000
Forman-Aastad loams, undulating, eroded	FoB2	913	341580	cgfq	nd081	1959	1:12000
Aastad clay loam, 1 to 3 percent slopes	Aa	784	341552	2w8fj	nd081	1959	1:12000
Forman-Aastad loams, 3 to 6 percent slopes	I403B	328	2641231	1nyz0	nd081	1959	1:12000
Aastad-Wyard-Tonka complex, 0 to 3 percent slopes	G196A	125	2579510	2pwzr	nd081	1959	1:12000
Forman-Aastad loams, 3 to 6 percent slopes, very stony	G629B	124	2579472	2q5sn	nd081	1959	1:12000
Aastad-Wyard-Tonka complex, 0 to 3 percent slopes	I325A	54	2641215	1nyws	nd081	1959	1:12000
Forman-Aastad stony loams	Fs	36	341581	cgfr	nd081	1959	1:12000
Forman-Aastad loams, west, 3 to 6 percent slopes	G658B	467	2582003	2q5vy	nd083	1990	1:20000
Forman-Aastad loams, west, 0 to 3 percent slopes	F658A	132011	2585129	2q5fc	nd101	1967	1:20000
Forman-Aastad loams, west, 3 to 6 percent slopes	F658B	49707	2585263	2q5fd	nd101	1967	1:20000
Forman-Aastad-Tonka complex, west, 0 to 3 percent slopes	F659A	47465	2585265	2q5ff	nd101	1967	1:20000
Aastad-Tonka complex, west, 0 to 3 percent slopes	F655A	25390	2585232	2q5f6	nd101	1967	1:20000
Forman-Aastad loams, west, 0 to 3 percent slopes	G658A	6678	2573452	2q5vx	nd101	1967	1:20000
Aastad loam, west, 3 to 6 percent slopes, drainageway	F656B	3560	2585103	2q5f8	nd101	1967	1:20000
Aastad loam, west, 3 to 6 percent slopes	F653B	3090	2585266	2q5f4	nd101	1967	1:20000
Forman-Aastad-Tonka complex, west, 3 to 6 percent slopes	F659B	2760	2585172	2q5fg	nd101	1967	1:20000
Aastad loam, west, 0 to 3 percent slopes, drainageway	F656A	1865	2585278	2q5f7	nd101	1967	1:20000
Forman-Aastad loams, west, 3 to 6 percent slopes	G658B	1546	2573491	2q5vy	nd101	1967	1:20000
Aastad-Parnell complex, west, 0 to 3 percent slopes	F654A	753	2585135	2q5f5	nd101	1967	1:20000
Aastad-Forman loams, 0 to 3 percent slopes	G193A	3510	2765629	2pwzm	sd013	1987	1:20000
Forman-Aastad loams, 0 to 6 percent slopes	G191B	2671	2797738	2sd1l	sd013	1987	1:20000
Forman-Buse-Aastad loams, 3 to 9 percent slopes	G190C	1303	2797737	2sd1k	sd013	1987	1:20000
Forman-Aastad-Buse loams, 3 to 15 percent slopes	G192D	352	2797740	2sd1p	sd013	1987	1:20000
Forman-Buse-Aastad loams, 1 to 6 percent slopes	G190B	209	2797736	2sd1j	sd013	1987	1:20000
Forman-Aastad loams, 3 to 6 percent slopes	G193B	163	2797630	2pwzn	sd013	1987	1:20000
Aastad loam, 0 to 3 percent slopes, drainageway	G189A	56	2797735	2sd1h	sd013	1987	1:20000
Aastad-Forman loams, 0 to 3 percent slopes	G193A	19038	2797960	2pwzm	sd025	1992	1:20000
Forman-Buse-Aastad loams, 1 to 6 percent slopes	FnB	12990	417728	g0p3	sd025	1992	1:20000
Forman-Buse-Aastad loams, 2 to 9 percent slopes	FnC	6055	417729	g0p4	sd025	1992	1:20000
Forman-Buse-Aastad loams, 1 to 6 percent slopes	G190B	5413	2797999	2sd1j	sd025	1992	1:20000
Aastad-Tonka complex	At	5044	417681	g0ml	sd025	1992	1:20000
Forman-Aastad loams, 0 to 6 percent slopes	G191B	2824	2798001	2sd1l	sd025	1992	1:20000
Forman-Aastad loams, 1 to 6 percent slopes	FmB	2759	417727	g0p2	sd025	1992	1:20000
Aastad-Tonka complex, 0 to 3 percent slopes	G195A	1663	2798004	2sd1t	sd025	1992	1:20000
Aastad loam	Aa	1526	417680	g0mk	sd025	1992	1:20000
Aastad loam, 0 to 3 percent slopes, drainageway	G189A	1336	2797998	2sd1h	sd025	1992	1:20000
Forman-Aastad loams, 0 to 3 percent slopes	FmA	693	417726	g0p1	sd025	1992	1:20000
Forman-Buse-Aastad loams, 3 to 9 percent slopes	G190C	313	2798000	2sd1k	sd025	1992	1:20000
Forman-Aastad loams, coteau, 0 to 2 percent slopes	Z131A	408	2765263	2qkmm	sd029	2006	1:12000
Forman-Buse-Aastad loams, coteau, 2 to 9 percent slopes	Z132C	230	2765265	2qkmp	sd029	2006	1:12000
Forman-Aastad loams, coteau, 1 to 6 percent slopes	Z131B	216	2765264	2qkmn	sd029	2006	1:12000
Forman-Buse-Aastad loams, 1 to 6 percent slopes	FoB	105182	417076	g002	sd037	1992	1:20000
Forman-Buse-Aastad loams, 2 to 9 percent slopes	FoC	100833	417077	g003	sd037	1992	1:20000
Forman-Aastad loams, 1 to 6 percent slopes	FmB	10314	417074	g000	sd037	1992	1:20000
Forman-Buse-Aastad loams, 1 to 6 percent slopes	G190B	8809	2798481	2sd1j	sd037	1992	1:20000
Aastad-Forman loams, 0 to 3 percent slopes	G193A	6656	2798438	2pwzm	sd037	1992	1:20000
Forman-Buse-Aastad loams, 3 to 9 percent slopes	G190C	3495	2798482	2sd1k	sd037	1992	1:20000
Forman-Aastad loams, 0 to 6 percent slopes	G191B	1829	2798483	2sd1l	sd037	1992	1:20000
Forman-Aastad loams, 0 to 3 percent slopes	FmA	1121	417073	fzzz	sd037	1992	1:20000
Forman-Aastad-Parnell complex, 0 to 6 percent slopes	FnB	980	417075	g001	sd037	1992	1:20000
Aastad loam	Aa	699	417038	fzyv	sd037	1992	1:20000
Aastad loam, 0 to 3 percent slopes, drainageway	G189A	204	2798480	2sd1h	sd037	1992	1:20000
Aastad-Hamerly loams, 0 to 3 percent slopes	G200A	76	2798487	2sd1w	sd037	1992	1:20000
Forman-Aastad-Buse loams, 3 to 15 percent slopes	G192D	31	2798484	2sd1p	sd037	1992	1:20000
Forman-Aastad loams, 1 to 6 percent slopes	FmB	20969	416858	fzs1	sd039	1992	1:20000
Forman-Buse-Aastad loams, 2 to 9 percent slopes	FtC	7749	416859	fzs2	sd039	1992	1:20000
Forman-Buse-Aastad loams, 2 to 15 percent slopes	FtD	4266	416860	fzs3	sd039	1992	1:20000
Forman-Aastad loams, 0 to 2 percent slopes	FmA	3327	416857	fzs0	sd039	1992	1:20000
Forman-Aastad complex, 1 to 4 percent slopes	J225B	26294	2945664	2w8dv	sd051	1977	1:20000
Forman-Aastad loams, 1 to 6 percent slopes	FdB	15533	418150	g13q	sd051	1977	1:20000
Forman-Buse-Aastad loams, coteau, 2 to 9 percent slopes	Z132C	7684	2712921	2qkmp	sd051	1977	1:20000
Forman-Buse-Aastad loams, coteau 1 to 6 percent slopes	Z132B	6304	2712936	2rjd1	sd051	1977	1:20000
Forman-Aastad loams, 3 to 9 percent slopes	FdC	6184	418151	g13r	sd051	1977	1:20000
Forman-Buse-Aastad loams, coteau, 2 to 15 percent slopes	Z132D	5693	2712937	2rjd2	sd051	1977	1:20000
Buse-Forman-Aastad loams, 4 to 15 percent slopes	BfD	3776	418140	g13d	sd051	1977	1:20000
Forman-Aastad loams, coteau, 1 to 6 percent slopes	Z131B	3211	2712920	2qkmn	sd051	1977	1:20000
Forman-Aastad loams, 4 to 15 percent slopes	FdD	3018	418152	g13s	sd051	1977	1:20000
Forman-Aastad loams, 0 to 2 percent slopes	FdA	2533	418149	g13p	sd051	1977	1:20000
Aastad-Flom complex	Aa	1469	418129	g131	sd051	1977	1:20000
Forman-Aastad extremely stony complex, 0 to 9 percent slopes	FeC	518	418153	g13t	sd051	1977	1:20000
Forman-Aastad loams, coteau, 0 to 2 percent slopes	Z131A	20	2712919	2qkmm	sd051	1977	1:20000
Aastad-Forman loams, 0 to 3 percent slopes	G193A	2485	2798794	2pwzm	sd089	1980	1:20000
Forman-Aastad loams, 0 to 6 percent slopes	G191B	2125	2799234	2sd1l	sd089	1980	1:20000
Forman-Aastad loams, 3 to 9 percent slopes	G192C	97	2799236	2sd1n	sd089	1980	1:20000
Forman-Aastad loams, 3 to 6 percent slopes	G193B	52	2798795	2pwzn	sd089	1980	1:20000
Forman-Aastad-Buse loams, 3 to 15 percent slopes	G192D	14	2799237	2sd1p	sd089	1980	1:20000
Forman-Aastad loams, 3 to 6 percent slopes, very stony	G629B	8	2798820	2q5sn	sd089	1980	1:20000
Forman-Aastad loams, 9 to 15 percent slopes	FrD	46732	416559	fzgd	sd091	1970	1:20000
Forman-Aastad loams, 6 to 9 percent slopes	FrC	37253	416558	fzgc	sd091	1970	1:20000
Forman-Aastad loams, 2 to 6 percent slopes	FrB	26566	416557	fzgb	sd091	1970	1:20000
Forman-Aastad complex, 1 to 4 percent slopes	J225B	4222	2945665	2w8dv	sd091	1970	1:20000
Aastad loam, 0 to 2 percent slopes	AaA	2066	416529	fzff	sd091	1970	1:20000
Forman-Aastad loams, 3 to 6 percent slopes	G193B	1575	2799263	2pwzn	sd091	1970	1:20000
Forman-Aastad loams, 3 to 9 percent slopes	G192C	1106	2799325	2sd1n	sd091	1970	1:20000
Forman-Aastad-Buse loams, 3 to 15 percent slopes	G192D	991	2799326	2sd1p	sd091	1970	1:20000
Aastad loam, 0 to 3 percent slopes, drainageway	G189A	868	2799322	2sd1h	sd091	1970	1:20000
Forman-Aastad loams, 0 to 2 percent slopes	FrA	718	416556	fzg9	sd091	1970	1:20000
Forman-Buse-Aastad loams, 3 to 9 percent slopes	G190C	669	2799323	2sd1k	sd091	1970	1:20000
Aastad-Forman loams, 0 to 3 percent slopes	G193A	389	2799262	2pwzm	sd091	1970	1:20000
Aastad clay loam, 1 to 3 percent slopes	AcA	110	3026396	2w8fj	sd091	1970	1:20000
Forman-Aastad loams, 0 to 6 percent slopes	G191B	28	2799324	2sd1l	sd091	1970	1:20000
Aastad-Hamerly loams, 0 to 3 percent slopes	G200A	16	2799329	2sd1w	sd091	1970	1:20000
Forman-Aastad complex, 1 to 4 percent slopes	J225B	87201	2945666	2w8dv	sd109	1977	1:20000
Forman-Aastad loams, 9 to 15 percent slopes	FoD	19203	417823	g0s5	sd109	1977	1:20000
Forman-Aastad loams, 6 to 9 percent slopes	FoC	16026	417822	g0s4	sd109	1977	1:20000
Forman-Aastad loams, 2 to 6 percent slopes	FoB	7877	417821	g0s3	sd109	1977	1:20000
Forman-Aastad stony complex, 0 to 9 percent slopes	FsB	2883	417824	g0s6	sd109	1977	1:20000
Aastad clay loam, 1 to 3 percent slopes	AcA	2815	3026397	2w8fj	sd109	1977	1:20000
Aastad loam, 0 to 2 percent slopes	AaA	722	417800	g0rf	sd109	1977	1:20000
Aastad-Forman loams, 0 to 3 percent slopes	I403A	270	2800188	1nyyz	sd109	1977	1:20000
Forman-Buse-Aastad loams, coteau, 2 to 15 percent slopes	Z132D	229	2712816	2rjd2	sd109	1977	1:20000
Forman-Aastad loams, 3 to 6 percent slopes	I403B	126	2800189	1nyz0	sd109	1977	1:20000
Forman-Aastad loams, 0 to 2 percent slopes	FoA	104	417820	g0s2	sd109	1977	1:20000
Forman-Buse-Aastad loams, coteau, 2 to 9 percent slopes	Z132C	46	2712804	2qkmp	sd109	1977	1:20000
Forman-Buse-Aastad loams, coteau 1 to 6 percent slopes	Z132B	24	2712815	2rjd1	sd109	1977	1:20000
Forman-Aastad loams, coteau, 1 to 6 percent slopes	Z131B	4	2712803	2qkmn	sd109	1977	1:20000
Forman-Buse-Aastad loams, 1 to 6 percent slopes	G190B	18199	2799579	2sd1j	sd115	1997	1:24000
Aastad-Forman loams, 0 to 3 percent slopes	G193A	8072	2799533	2pwzm	sd115	1997	1:24000
Forman-Buse-Aastad loams, 3 to 9 percent slopes	G190C	3416	2799580	2sd1k	sd115	1997	1:24000
Aastad-Tonka complex, 0 to 3 percent slopes	G195A	2128	2799584	2sd1t	sd115	1997	1:24000
Kranzburg-Zell-Aastad complex, 1 to 6 percent slopes	G793B	2056	2800037	2sd5y	sd115	1997	1:24000
Forman-Aastad loams, 0 to 6 percent slopes	G191B	849	2799581	2sd1l	sd115	1997	1:24000
Aastad-Hamerly loams, 0 to 3 percent slopes	G200A	830	2799585	2sd1w	sd115	1997	1:24000
Kranzburg-Zell-Aastad complex, 3 to 9 percent slopes	G793C	368	2800064	2sl3v	sd115	1997	1:24000
Aastad loam, 0 to 3 percent slopes, drainageway	G189A	325	2799578	2sd1h	sd115	1997	1:24000

Map of Series Extent

Approximate geographic distribution of the AASTAD 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).