Appanoose County, Iowa
The most common soil here is Clarinda, on about 9% of the land: a silty clay loam, smooth and slightly sticky. Armstrong and Edina come next.
About 18% of the land drains well, and 71% stays wet for long stretches; groundwater comes within two feet of the surface under 74% of it.
USDA rates 95% of the land very limited for a standard septic drain field, and 91% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 8% 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 Appanoose County, Iowa, 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 Somewhat poorly drained and the dominant hydrologic group is D (very slow infiltration, high runoff). The most common soil order is Alfisols — moderately leached forest soils with a clay-enriched subsoil. 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 Appanoose County, Iowa. 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 |
|---|---|---|---|---|---|
| Clarinda silty clay loam, 5 to 9 percent slopes, moderately eroded | 27K | Poorly drained | D | Very limited | Very limited |
| Edina silt loam, 0 to 1 percent slopes | 26K | Poorly drained | D | Very limited | Very limited |
| Seymour silt loam, 2 to 5 percent slopes | 25K | Somewhat poorly drained | D | Very limited | Very limited |
| Olmitz-Vesser-Colo complex, 2 to 5 percent slopes | 25K | Poorly drained | C/D | Very limited | Very limited |
| Armstrong loam, 5 to 9 percent slopes, moderately eroded | 16K | Somewhat poorly drained | D | Very limited | Very limited |
| Lindley loam, 18 to 25 percent slopes, moderately eroded | 15K | Well drained | C | Very limited | Very limited |
| Water | 14K | Not rated | Not rated | ||
| Gara loam, 14 to 18 percent slopes, moderately eroded | 13K | Well drained | C | Very limited | Very limited |
| Kniffin silt loam, 2 to 5 percent slopes | 12K | Somewhat poorly drained | D | Very limited | Very limited |
| Armstrong-Gara loams, 9 to 14 percent slopes, moderately eroded complex | 7K | Somewhat poorly drained | D | Very limited | Very limited |
| Keswick loam, 5 to 9 percent slopes, moderately eroded | 6K | Somewhat poorly drained | D | Very limited | Very limited |
| Lamoni silty clay loam, 9 to 14 percent slopes, moderately eroded | 6K | Somewhat poorly drained | D | Very limited | Very limited |
| Kennebec-Amana silt loams complex | 6K | Moderately well drained | B | Very limited | Very limited |
| Lindley loam, 14 to 18 percent slopes, moderately eroded | 5K | Well drained | C | Very limited | Very limited |
| Grundy silty clay loam, 2 to 5 percent slopes | 5K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Adair clay loam, heavy till, 5 to 9 percent slopes, moderately eroded | 4K | Somewhat poorly drained | D | Very limited | Very limited |
| Mystic silt loam, 9 to 14 percent slopes, moderately eroded | 4K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Chequest silty clay loam, 0 to 2 percent slopes, occasionally flooded | 4K | Poorly drained | C/D | Very limited | Very limited |
| Shelby loam, 9 to 14 percent slopes, moderately eroded | 4K | Well drained | C | Somewhat limited | Very limited |
| Shelby-Adair clay loams, heavy till plain, 9 to 14 percent slopes, moderately eroded | 4K | Well drained | C | Somewhat 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 91% 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 95% of soils are rated "very limited" for septic absorption fields. Poorly drained soils can't absorb septic effluent effectively. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Many soils hold water for extended periods. Raised beds are highly recommended to improve drainage for vegetables. Well-adapted native plants and water-loving species will do best in natural conditions.