Moody County, South Dakota
The most common soil here is Moody, on about 14% of the land: a silty clay loam, smooth and slightly sticky. Egan and Houdek come next.
About 76% of the land drains well, and 17% stays wet for long stretches; groundwater comes within two feet of the surface under 17% of it.
USDA rates 91% of the land very limited for a standard septic drain field, and 21% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 11% of the land floods occasionally or more.
Soils change over short distances, so look up an address below for the soil at that exact spot and the reasons behind each rating.
The soils you're most likely standing on
The biggest named soils in Moody County, South Dakota, each drawn five feet deep from its official USDA description, in its recorded colors.
Dots mark gravel; white flecks mark lime. Shares are by acres across the survey area, and each mapped patch usually mixes several of these soils.
The biggest mapped areas
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). The most common soil order is Mollisols — grassland soils with a thick, dark, fertile topsoil rich in organic matter. This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Moody County, South Dakota. Search your address to find the exact soil composition, drainage, and series details at your specific location.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Egan-Wentworth complex, 2 to 6 percent slopes | 29K | Well drained | C | Somewhat limited | Very limited |
| Moody silty clay loam, cool, 2 to 6 percent slopes | 28K | Well drained | C | Somewhat limited | Very limited |
| Moody-Trent complex, 0 to 2 percent slopes | 24K | Well drained | C | Somewhat limited | Very limited |
| Moody-Nora complex, 2 to 6 percent slopes | 19K | Well drained | C | Somewhat limited | Very limited |
| Kranzburg-Brookings silty clay loams, 1 to 6 percent slopes | 18K | Well drained | C | Somewhat limited | Very limited |
| Egan-Ethan complex, 2 to 6 percent slopes | 18K | Well drained | C | Somewhat limited | Very limited |
| Houdek clay loam, 2 to 6 percent slopes | 16K | Well drained | B | Somewhat limited | Very limited |
| Wentworth-Chancellor-Wakonda silty clay loams, 0 to 2 percent slopes | 12K | Moderately well drained | B | Somewhat limited | Somewhat limited |
| Wakonda-Chancellor complex, 0 to 2 percent slopes | 12K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Lamo silty clay loam, frequently flooded | 12K | Somewhat poorly drained | C | Very limited | Very limited |
| Doland loam, 2 to 6 percent slopes | 9K | Well drained | C | Somewhat limited | Very limited |
| Grovena loam, 2 to 6 percent slopes | 8K | Well drained | B | Not limited | Very limited |
| Ethan-Egan complex, 5 to 9 percent slopes | 6K | Well drained | C | Somewhat limited | Very limited |
| Davis loam, 0 to 2 percent slopes | 6K | Moderately well drained | B | Somewhat limited | Somewhat limited |
| Grovena-Bonilla loams, 0 to 2 percent slopes | 6K | Well drained | B | Not limited | Somewhat limited |
| Flandreau loam, 2 to 6 percent slopes | 6K | Well drained | B | Not limited | Very limited |
| Houdek-Shindler clay loams, 6 to 25 percent slopes | 5K | Well drained | B | Somewhat limited | Very limited |
| Lamo silty clay loam, cool, 0 to 2 percent slopes, occasionally flooded | 4K | Poorly drained | C | Very limited | Very limited |
| Houdek-Shindler clay loams, 5 to 9 percent slopes | 4K | Well drained | B | Somewhat limited | Very limited |
| Baltic silty clay loam, 0 to 2 percent slopes, occasionally ponded | 4K | Poorly drained | C/D | Very limited | Very limited |
Soil Orders in This Area
The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.
What This Means
Building & Foundations
About 21% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 91% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.