LaSalle Parish, Louisiana
The dominant drainage class is Well drained and the dominant hydrologic group is C/D (varies with drainage). 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 LaSalle Parish, Louisiana.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Smithdale fine sandy loam, 12 to 30 percent slopes | 34K | Well drained | B | Very limited | Very limited |
| Falkner silt loam, 0 to 2 percent slopes | 32K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Tippah silt loam, 1 to 5 percent slopes | 30K | Moderately well drained | C | Very limited | Very limited |
| Ruston fine sandy loam, 3 to 8 percent slopes | 30K | Well drained | B | Not limited | Somewhat limited |
| Guyton and Ouachita soils, frequently flooded | 27K | Well drained | C/D | Very limited | Very limited |
| Water | 22K | Not rated | Not rated | ||
| Ruston fine sandy loam, 1 to 3 percent slopes | 19K | Well drained | C | Not limited | Very limited |
| Providence silt loam, 1 to 3 percent slopes | 18K | Moderately well drained | C/D | Very limited | Very limited |
| Ouachita and Jena soils, frequently flooded | 18K | Well drained | C | Very limited | Very limited |
| Frizzell silt loam, 0 to 2 percent slopes | 12K | Somewhat poorly drained | C | Somewhat limited | Very limited |
| Kisatchie-Oula complex, 8 to 40 percent slopes | 12K | Well drained | D | Very limited | Very limited |
| Bursley silt loam, occasionally flooded | 12K | Poorly drained | C/D | Very limited | Very limited |
| Pheba loam | 11K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Savannah fine sandy loam, 1 to 5 percent slopes | 10K | Moderately well drained | C/D | Very limited | Very limited |
| Una silty clay loam, frequently flooded | 10K | Poorly drained | D | Very limited | Very limited |
| Forestdale silty clay loam, 0 to 1 percent slopes, occasionally flooded | 10K | Poorly drained | C/D | Very limited | Very limited |
| Bayoudan silty clay loam, 5 to 15 percent slopes | 9K | Moderately well drained | D | Very limited | Very limited |
| Foley silt loam, occasionally flooded | 9K | Poorly drained | D | Very limited | Very limited |
| Libuse silt loam, 1 to 5 percent slopes | 9K | Moderately well drained | D | Very limited | Very limited |
| Dowling clay, 0 to 1 percent slopes, frequently flooded, tensas | 7K | Very poorly drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 75% 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 84% 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
Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.