Polk and San Jacinto Counties, Texas
The dominant drainage class is Moderately well 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 Polk and San Jacinto Counties, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Pinetucky fine sandy loam, 1 to 5 percent slopes | 140K | Moderately well drained | C | Not limited | Very limited |
| Hatliff-Pluck-Kian complex, 0 to 1 percent slopes, frequently flooded | 138K | Poorly drained | A | Very limited | Very limited |
| Doucette loamy fine sand, 1 to 5 percent slopes | 67K | Well drained | B | Not limited | Somewhat limited |
| Water | 65K | D | Not rated | Not rated | |
| Woodville fine sandy loam, 5 to 12 percent slopes | 61K | Somewhat poorly drained | D | Very limited | Very limited |
| Woodville fine sandy loam, 1 to 5 percent slopes | 49K | Somewhat poorly drained | D | Very limited | Very limited |
| Stringtown-Bonwier association, strongly sloping | 45K | Well drained | B | Somewhat limited | Somewhat limited |
| Colita-Laska complex, 1 to 5 percent slopes | 40K | Moderately well drained | B/D | Very limited | Very limited |
| Leggett fine sandy loam, 0 to 3 percent slopes | 31K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Conroe gravelly loamy fine sand, 0 to 5 percent slopes | 29K | Moderately well drained | B | Somewhat limited | Very limited |
| Choates loamy fine sand, 1 to 5 percent slopes | 22K | Somewhat poorly drained | A | Very limited | Very limited |
| Diboll-Keltys complex, 1 to 5 percent slopes | 21K | Moderately well drained | D | Very limited | Very limited |
| Wiergate clay, 5 to 8 percent slopes | 21K | Somewhat poorly drained | D | Very limited | Very limited |
| Belrose loamy fine sand, 0 to 3 percent slopes | 21K | Moderately well drained | A | Somewhat limited | Very limited |
| Betis loamy fine sand, 1 to 5 percent slopes | 19K | Somewhat excessively drained | A | Not limited | Very limited |
| Boykin loamy fine sand, 1 to 5 percent slopes | 16K | Well drained | B | Not limited | Somewhat limited |
| Laska fine sandy loam, 1 to 5 percent slopes | 15K | Moderately well drained | B | Very limited | Very limited |
| Moswell fine sandy loam, 5 to 12 percent slopes | 14K | Well drained | D | Very limited | Very limited |
| Wiergate clay, 1 to 5 percent slopes | 13K | Somewhat poorly drained | D | Very limited | Very limited |
| Sorter-Dallardsville complex, 0 to 1 percent slopes | 12K | Poorly drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 52% 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. 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.