Knox County, Nebraska
The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 Knox County, Nebraska.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Crofton-Nora complex, 6 to 11 percent slopes, eroded | 70K | Well drained | B | Somewhat limited | Somewhat limited |
| Labu-Sansarc silty clays, 9 to 35 percent slopes | 39K | Well drained | D | Very limited | Very limited |
| Alcester silty clay loam, 2 to 6 percent slopes | 33K | Well drained | C | Somewhat limited | Very limited |
| Bazile loam, 2 to 6 percent slopes | 32K | Well drained | C | Not limited | Very limited |
| Thurman fine sandy loam, 2 to 11 percent slopes | 31K | Somewhat excessively drained | A | Not limited | Very limited |
| Crofton silt loam, 17 to 30 percent slopes, eroded | 27K | Well drained | B | Very limited | Very limited |
| Brunswick-Paka complex, 17 to 30 percent slopes | 24K | Well drained | B | Very limited | Very limited |
| Crofton silt loam, coarse, 8 to 17 percent slopes, eroded | 23K | Well drained | B | Somewhat limited | Somewhat limited |
| Moody silty clay loam, 2 to 6 percent slopes | 23K | Well drained | C | Somewhat limited | Very limited |
| Trent silt loam, 0 to 2 percent slopes | 21K | Well drained | C | Somewhat limited | Very limited |
| Moody loam, 2 to 6 percent slopes | 20K | Well drained | C | Somewhat limited | Very limited |
| Water | 20K | Not rated | Not rated | ||
| Labu silty clay, 6 to 11 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Crofton-Nora complex, 2 to 6 percent slopes, eroded | 14K | Well drained | B | Not limited | Somewhat limited |
| Monowi-Bristow silty clays, 9 to 35 percent slopes | 14K | Well drained | D | Very limited | Very limited |
| Crofton-Nora complex, 11 to 17 percent slopes, eroded | 13K | Well drained | B | Somewhat limited | Somewhat limited |
| Thurman loamy fine sand, 2 to 6 percent slopes | 11K | Excessively drained | A | Not limited | Very limited |
| Simeon sand, 6 to 30 percent slopes, eroded | 10K | Excessively drained | A | Very limited | Very limited |
| Fluvaquents, frequently flooded, wet | 10K | Very poorly drained | B/D | Very limited | Very limited |
| Betts clay loam, 15 to 30 percent slopes | 10K | Well drained | C | Very limited | Very limited |
What This Means
Building & Foundations
About 32% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 69% 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.