Lawrence County, Arkansas
The dominant drainage class is Poorly 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 Lawrence County, Arkansas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Foley-Calhoun complex, 0 to 1 percent slopes | 40K | Poorly drained | D | Very limited | Very limited |
| Jackport silty clay, 0 to 1 percent slopes | 36K | Poorly drained | D | Very limited | Very limited |
| Crowley silt loam, 0 to 1 percent slopes | 29K | Poorly drained | D | Very limited | Very limited |
| Amagon silt loam | 22K | Poorly drained | C/D | Very limited | Very limited |
| Captina silt loam, 3 to 8 percent slopes | 20K | Moderately well drained | C/D | Very limited | Very limited |
| Boden gravelly sandy loam, 8 to 12 percent slopes | 14K | Well drained | C | Somewhat limited | Very limited |
| Hontas soils, frequently flooded | 13K | Moderately well drained | C | Very limited | Very limited |
| Healing silt loam, 0 to 1 percent slopes, frequently flooded | 12K | Well drained | B | Very limited | Very limited |
| Dubbs silt loam, 1 to 3 percent slopes | 11K | Well drained | B | Not limited | Very limited |
| McCrory fine sandy loam, 0 to 1 percent slopes | 10K | Poorly drained | C/D | Very limited | Very limited |
| Bosket fine sandy loam, 0 to 3 percent slopes | 10K | Well drained | B | Not limited | Very limited |
| Sharkey silty clay (kobel) | 10K | Poorly drained | D | Very limited | Very limited |
| Dundee silt loam, 0 to 1 percent slopes | 10K | Somewhat poorly drained | C | Very limited | Very limited |
| Dundee silt loam, gently undulating | 9K | Somewhat poorly drained | C | Somewhat limited | Very limited |
| Ventris-Rock outcrop complex, 3 to 12 percent slopes | 9K | Moderately well drained | D | Very limited | Very limited |
| Beulah sandy loam, undulating | 9K | Somewhat excessively drained | A | Not limited | Very limited |
| Agnos gravelly silt loam, 8 to 12 percent slopes | 8K | Well drained | D | Very limited | Very limited |
| Portia fine sandy loam, 3 to 8 percent slopes | 8K | Well drained | B | Not limited | Somewhat limited |
| Agnos soils, 12 to 25 percent slopes | 8K | Well drained | D | Very limited | Very limited |
| Boden gravelly sandy loam, 3 to 8 percent slopes | 7K | Well drained | C | Somewhat limited | Very limited |
What This Means
Building & Foundations
About 76% 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 97% 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.