Sioux County, North Dakota
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). 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 Sioux County, North Dakota.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Flasher-Vebar-Parshall complex, 9 to 35 percent slopes | 41K | Somewhat excessively drained | D | Very limited | Very limited |
| Vebar-Flasher-Tally complex, 9 to 15 percent slopes | 31K | Well drained | B | Somewhat limited | Very limited |
| Daglum-Rhoades complex, 0 to 6 percent slopes | 30K | Moderately well drained | D | Very limited | Somewhat limited |
| Ekalaka-Lakota fine sandy loams, 0 to 6 percent slopes | 28K | Well drained | C | Not limited | Very limited |
| Regent-Janesburg complex, 3 to 6 percent slopes | 26K | Well drained | C | Very limited | Very limited |
| Water | 25K | Not rated | Not rated | ||
| Desart-Ekalaka-Telfer complex, 0 to 6 percent slopes | 22K | Well drained | C | Not limited | Very limited |
| Amor-Cabba loams, 9 to 15 percent slopes | 22K | Well drained | C | Somewhat limited | Very limited |
| Dogtooth-Janesburg-Regent complex, 6 to 15 percent slopes | 22K | Well drained | D | Very limited | Very limited |
| Belfield-Daglum complex, 0 to 2 percent slopes | 21K | Moderately well drained | C | Somewhat limited | Very limited |
| Lakota-Ekalaka-Sham, high precipitation, gullied complex, 0 to 9 percent slopes | 19K | Well drained | C | Not limited | Very limited |
| Janesburg-Regent-Cabba complex, 9 to 35 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Amor-Cabba loams, 6 to 9 percent slopes | 17K | Well drained | C | Somewhat limited | Very limited |
| Cabba-Chama-Shambo loams, 9 to 50 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Telfer-Parshall-Vebar complex, 6 to 15 percent slopes | 17K | Well drained | A | Somewhat limited | Very limited |
| Janesburg-Dogtooth complex, 0 to 6 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Belfield-Wyola-Daglum complex, 2 to 6 percent slopes | 17K | Moderately well drained | C | Somewhat limited | Very limited |
| Amor-Vebar complex, 0 to 6 percent slopes | 17K | Well drained | C | Somewhat limited | Very limited |
| Rhoades-Daglum-Rhoades, severely eroded complex, 0 to 9 percent slopes | 15K | Moderately well drained | D | Very limited | Somewhat limited |
| Belfield-Grail clay loams, 0 to 2 percent slopes | 15K | Moderately well drained | C | Somewhat limited | Very limited |
What This Means
Building & Foundations
About 42% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 83% 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
Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.