Tangipahoa 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 Tangipahoa Parish, Louisiana.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Ruston-Smithdale association, 3 to 12 percent slopes | 64K | Well drained | B | Not limited | Somewhat limited |
| Ouachita, Ochlockonee and Guyton soils, 0 to 3 percent slopes, frequently flooded | 62K | Well drained | B | Very limited | Very limited |
| Maurepas muck, 0 to 1 percent slopes, frequently flooded | 57K | Very poorly drained | A/D | Very limited | Very limited |
| Tangi silt loam, 3 to 8 percent slopes | 49K | Moderately well drained | C/D | Very limited | Very limited |
| Toula silt loam, 1 to 3 percent slopes | 43K | Moderately well drained | D | Very limited | Very limited |
| Guyton silt loam, 0 to 1 percent slopes, rarely flooded | 34K | Poorly drained | C/D | Very limited | Very limited |
| Tangi silt loam, 1 to 3 percent slopes | 33K | Moderately well drained | C/D | Very limited | Very limited |
| Abita silt loam, 0 to 2 percent slopes | 32K | Somewhat poorly drained | C | Very limited | Very limited |
| Water | 23K | Not rated | Not rated | ||
| Myatt fine sandy loam | 17K | Poorly drained | B/D | Very limited | Very limited |
| Cahaba fine sandy loam, 1 to 3 percent slopes | 15K | Well drained | B | Not limited | Very limited |
| Guyton silt loam, 0 to 1 percent slopes, occasionally flooded | 14K | Poorly drained | C/D | Very limited | Very limited |
| Myatt fine sandy loam, occasionally flooded | 14K | Poorly drained | B/D | Very limited | Very limited |
| Brimstone-Guyton silt loams, 0 to 1 percent slopes, rarely flooded | 11K | Poorly drained | C/D | Very limited | Very limited |
| Ruston fine sandy loam, 1 to 3 percent slopes | 9K | Well drained | B | Not limited | Somewhat limited |
| Fluker silt loam, 0 to 2 percent slopes | 8K | Somewhat poorly drained | D | Very limited | Very limited |
| Abita silt loam, 2 to 5 percent slopes | 7K | Somewhat poorly drained | C | Very limited | Very limited |
| Malbis fine sandy loam, 3 to 8 percent slopes | 6K | Moderately well drained | C | Somewhat limited | Very limited |
| Stough fine sandy loam, 0 to 1 percent slopes | 5K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Savannah silt loam, 1 to 3 percent slopes | 5K | Moderately well drained | C/D | Very limited | Very limited |
What This Means
Building & Foundations
About 77% 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 81% 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.