Ascension Parish, Louisiana
The dominant drainage class is Somewhat 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 Ascension Parish, Louisiana.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Barbary muck, 0 to 1 percent slopes, frequently flooded | 31K | Very poorly drained | D | Very limited | Very limited |
| Schriever clay, 0 to 1 percent slopes, rarely flooded | 23K | Poorly drained | D | Very limited | Very limited |
| Commerce silt loam, 0 to 1 percent slopes | 16K | Somewhat poorly drained | C | Somewhat limited | Very limited |
| Schriever clay, 0 to 1 percent slopes, frequently flooded | 10K | Poorly drained | D | Very limited | Very limited |
| Commerce silty clay loam | 10K | Somewhat poorly drained | C | Somewhat limited | Very limited |
| Calhoun silt loam, 0 to 1 percent slopes | 9K | Poorly drained | C/D | Very limited | Very limited |
| Water | 9K | Not rated | Not rated | ||
| Deerford-Verdun complex, 0 to 1 percent slopes | 9K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Fausse association, 0 to 1 percent slopes, frequently flooded | 8K | Very poorly drained | D | Very limited | Very limited |
| Thibaut clay, 0 to 1 percent slopes | 8K | Poorly drained | D | Very limited | Very limited |
| Olivier silt loam | 8K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Acy silt loam | 7K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Galvez silt loam | 7K | Somewhat poorly drained | C | Very limited | Very limited |
| Essen silt loam | 4K | Somewhat poorly drained | C | Very limited | Very limited |
| Fausse-Galvez association | 4K | Very poorly drained | D | Very limited | Very limited |
| Deerford-Patoutville complex | 4K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Schriever silty clay loam, 0 to 1 percent slopes, rarely flooded | 3K | Poorly drained | D | Very limited | Very limited |
| Sharkey clay, 0 to 1 percent slopes, frequently flooded, deltaic plain | 3K | Poorly drained | D | Very limited | Very limited |
| Convent silt loam, 0 to 1 percent slopes, frequently flooded | 3K | Somewhat poorly drained | C | Very limited | Very limited |
| Jeanerette silt loam, 0 to 1 percent slopes | 3K | Somewhat poorly drained | C | Very limited | Very limited |
What This Means
Building & Foundations
About 80% of soils are rated "very limited" for dwellings with basements. Specific challenges include 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.