American Samoa Soil Drainage Rankings
How well does the soil drain across American Samoa? We ranked every USDA survey area by the percentage of land classified as "well drained." Areas at the top of the list have soils where water moves through at a healthy rate — favorable for building, septic, and gardening. Areas at the bottom have more waterlogged or slowly-draining soils that may require engineered solutions.
| # | Survey Area | Well Drained | Poorly Drained | Dominant Class |
|---|---|---|---|---|
| 1 | American Samoa, Islands of Aunuu, Ofu, Olosega, Tau, and Tutuila | 96% | 2% | Well drained |