Holt County, Missouri
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 Holt County, Missouri.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Luton clay, 0 to 2 percent slopes, rarely flooded | 25K | Poorly drained | D | Very limited | Very limited |
| Contrary silt loam, 9 to 14 percent slopes, eroded | 17K | Well drained | B | Somewhat limited | Somewhat limited |
| Exira silty clay loam, 9 to 14 percent slopes, eroded | 16K | Well drained | C | Somewhat limited | Very limited |
| Marshall silty clay loam, 5 to 9 percent slopes, eroded | 16K | Well drained | C | Somewhat limited | Very limited |
| Colo, frequently flooded-Judson silty clay loams, 0 to 5 percent slopes | 15K | Poorly drained | C/D | Very limited | Very limited |
| Shelby clay loam, deep loess, 9 to 14 percent slopes, eroded | 13K | Well drained | C | Somewhat limited | Very limited |
| Leta silty clay, 0 to 2 percent slopes, rarely flooded | 12K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Wabash silty clay, 0 to 2 percent slopes, rarely flooded | 11K | Poorly drained | D | Very limited | Very limited |
| Marshall silty clay loam, 9 to 14 percent slopes, eroded | 10K | Well drained | C | Somewhat limited | Very limited |
| Blencoe silty clay, 0 to 2 percent slopes, rarely flooded | 10K | Somewhat poorly drained | D | Very limited | Very limited |
| Napier-Gullied land complex, 5 to 14 percent slopes | 8K | Well drained | B | Somewhat limited | Somewhat limited |
| Grable-Leta complex, 0 to 2 percent slopes, rarely flooded | 7K | Well drained | B | Very limited | Very limited |
| Kenridge-Judson complex, 1 to 7 percent slopes | 7K | Moderately well drained | C | Very limited | Very limited |
| Leta silty clay, sandy substratum, 0 to 2 percent slopes, rarely flooded | 7K | Somewhat poorly drained | D | Very limited | Very limited |
| Timula-Knox silt loams, 14 to 35 percent slopes | 7K | Well drained | B | Very limited | Very limited |
| Monona silt loam, 5 to 9 percent slopes, eroded | 6K | Well drained | B | Not limited | Somewhat limited |
| Marshall silty clay loam, 2 to 5 percent slopes | 6K | Well drained | C | Somewhat limited | Very limited |
| Knox silt loam, 14 to 20 percent slopes, eroded | 6K | Well drained | C | Very limited | Very limited |
| Motark silt loam, 0 to 2 percent slopes, rarely flooded | 6K | Moderately well drained | C | Very limited | Very limited |
| Dupo silt loam, 0 to 2 percent slopes, rarely flooded | 6K | Somewhat poorly drained | C | Very limited | Very limited |
What This Means
Building & Foundations
About 56% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 85% 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.