Izard County, Arkansas
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 Izard County, Arkansas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Estate-Portia-Moko association, 20 to 40 percent slopes, stony | 67K | Well drained | C | Very limited | Very limited |
| Brockwell gravelly sandy loam, 8 to 20 percent slopes | 42K | Well drained | B | Somewhat limited | Somewhat limited |
| Boden gravelly sandy loam, 8 to 20 percent slopes | 35K | Well drained | C | Somewhat limited | Very limited |
| Estate-Portia-Moko association, 8 to 20 percent slopes, stony | 29K | Well drained | C | Somewhat limited | Very limited |
| Noark very gravelly silt loam, 20 to 40 percent slopes | 21K | Well drained | C | Very limited | Very limited |
| Brockwell gravelly sandy loam, 3 to 8 percent slopes | 20K | Well drained | B | Not limited | Somewhat limited |
| Brockwell fine sandy loam, 3 to 8 percent slopes | 17K | Well drained | B | Not limited | Somewhat limited |
| Boden gravelly sandy loam, 3 to 8 percent slopes | 16K | Well drained | C | Somewhat limited | Very limited |
| Noark very gravelly silt loam, 8 to 20 percent slopes | 13K | Well drained | C | Very limited | Very limited |
| Brockwell fine sandy loam, 8 to 12 percent slopes, eroded | 11K | Well drained | B | Somewhat limited | Somewhat limited |
| Portia sandy loam, 3 to 8 percent slopes, eroded | 11K | Well drained | B | Not limited | Very limited |
| Portia sandy loam, 8 to 12 percent slopes, eroded | 10K | Well drained | B | Somewhat limited | Somewhat limited |
| Wideman fine sand, 0 to 5 percent slopes, frequently flooded | 10K | Excessively drained | A | Very limited | Very limited |
| Agnos very gravelly silt loam, 8 to 20 percent slopes | 10K | Well drained | D | Very limited | Very limited |
| Gassville very gravelly silt loam, 8 to 20 percent slopes | 7K | Well drained | D | Somewhat limited | Very limited |
| Gassville-Doniphan complex, 3 to 8 percent slopes | 6K | Well drained | D | Very limited | Very limited |
| Agnos very gravelly silt loam, 3 to 8 percent slopes | 6K | Well drained | D | Very limited | Very limited |
| Arkana-Moko complex, 20 to 40 percent slopes, very rocky | 6K | Well drained | D | Very limited | Very limited |
| Ramsey-Rock outcrop complex, 3 to 15 percent slopes | 6K | Somewhat excessively drained | D | Very limited | Very limited |
| Arkana-Moko complex, 8 to 20 percent slopes, very rocky | 5K | Well drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 43% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 71% 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.