Seminole County, Florida
The dominant drainage class is Very poorly drained and the dominant hydrologic group is A/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 Seminole County, Florida.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Myakka and EauGallie fine sands | 30K | Poorly drained | A/D | Very limited | Very limited |
| Urban land, 0 to 2 percent slopes | 24K | Not rated | Not rated | ||
| Water | 23K | Not rated | Not rated | ||
| Basinger, Samsula, and Hontoon soils, depressional | 23K | Very poorly drained | A/D | Very limited | Very limited |
| Tavares-Millhopper fine sands, 0 to 5 percent slopes | 15K | Moderately well drained | A | Somewhat limited | Very limited |
| Astatula-Apopka fine sands, 0 to 5 percent slopes | 13K | Excessively drained | A | Not limited | Very limited |
| Manatee, Floridana, and Holopaw soils, frequently flooded | 8K | Very poorly drained | B/D | Very limited | Very limited |
| Basinger and Smyrna fine sands, depressional | 8K | Very poorly drained | A/D | Very limited | Very limited |
| Nittaw, Okeelanta, and Basinger soils, frequently flooded | 8K | Very poorly drained | A/D | Very limited | Very limited |
| Pomello fine sand, 0 to 5 percent slopes | 6K | Moderately well drained | A | Somewhat limited | Very limited |
| Basinger and Delray fine sands | 5K | Poorly drained | A/D | Very limited | Very limited |
| EauGallie and Immokalee fine sands | 5K | Poorly drained | A/D | Very limited | Very limited |
| Felda and Manatee mucky fine sands, depressional | 5K | Very poorly drained | A/D | Very limited | Very limited |
| Immokalee sand, 0 to 2 percent slopes | 5K | Poorly drained | B/D | Very limited | Very limited |
| Paola-St. Lucie sands, 0 to 5 percent slopes | 5K | Excessively drained | A | Not limited | Very limited |
| Nittaw muck, occasionally flooded | 5K | Very poorly drained | C/D | Very limited | Very limited |
| Pompano fine sand, occasionally flooded | 5K | Poorly drained | A/D | Very limited | Very limited |
| St. Johns and EauGallie fine sands | 4K | Poorly drained | B/D | Very limited | Very limited |
| Adamsville-Sparr fine sands | 3K | Somewhat poorly drained | A | Somewhat limited | Very limited |
| Brighton, Samsula, and Sanibel mucks | 3K | Very poorly drained | A/D | Very limited | Very limited |
What This Means
Building & Foundations
About 56% 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 76% 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.