Henry County, Iowa
The dominant drainage class is Moderately well drained and the dominant hydrologic group is D (very slow infiltration, high 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 Henry County, Iowa.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Taintor silty clay loam, 0 to 2 percent slopes | 23K | Poorly drained | D | Very limited | Very limited |
| Mahaska silty clay loam, 0 to 2 percent slopes | 16K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Weller silty clay loam, 5 to 9 percent slopes, moderately eroded | 12K | Moderately well drained | D | Very limited | Very limited |
| Otley silty clay loam, 2 to 5 percent slopes | 11K | Moderately well drained | C | Very limited | Very limited |
| Pershing silt loam, 2 to 5 percent slopes | 9K | Somewhat poorly drained | D | Very limited | Very limited |
| Kalona silty clay loam, 0 to 1 percent slopes | 8K | Poorly drained | C/D | Very limited | Very limited |
| Pershing silty clay loam, 5 to 9 percent slopes, moderately eroded | 8K | Somewhat poorly drained | D | Very limited | Very limited |
| Mahaska silty clay loam, 2 to 5 percent slopes | 8K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Lindley loam, 18 to 25 percent slopes | 8K | Well drained | C | Very limited | Very limited |
| Nodaway-Cantril complex, 2 to 5 percent slopes | 7K | Moderately well drained | B | Very limited | Very limited |
| Ladoga silt loam, 5 to 9 percent slopes, eroded | 7K | Moderately well drained | C | Somewhat limited | Very limited |
| Lindley-Keswick loams, 14 to 18 percent slopes | 7K | Well drained | C | Very limited | Very limited |
| Otley silty clay loam, 5 to 9 percent slopes, eroded | 6K | Moderately well drained | C | Very limited | Very limited |
| Clinton silt loam, 5 to 9 percent slopes, eroded | 6K | Moderately well drained | C | Somewhat limited | Very limited |
| Lindley-Keswick loams, 14 to 18 percent slopes, moderately eroded | 6K | Well drained | C | Very limited | Very limited |
| Haig silt loam, 0 to 2 percent slopes | 6K | Poorly drained | D | Very limited | Very limited |
| Weller silt loam, 2 to 5 percent slopes | 5K | Moderately well drained | D | Very limited | Very limited |
| Ladoga silt loam, 2 to 5 percent slopes | 5K | Moderately well drained | C | Somewhat limited | Very limited |
| Colo silty clay loam, 2 to 5 percent slopes, occasionally flooded | 5K | Poorly drained | C/D | Very limited | Very limited |
| Grundy silt loam, 2 to 5 percent slopes | 4K | Somewhat poorly drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 88% 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 100% 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.