Trinity County, 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 Trinity County, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Fuller fine sandy loam, 1 to 3 percent slopes | 104K | Somewhat poorly drained | D | Very limited | Very limited |
| Keltys fine sandy loam, 1 to 3 percent slopes | 41K | Moderately well drained | D | Somewhat limited | Very limited |
| Kurth fine sandy loam, 1 to 3 percent slopes | 41K | Moderately well drained | C | Somewhat limited | Very limited |
| Moten-Multey complex, 0 to 2 percent slopes | 40K | Moderately well drained | C/D | Very limited | Very limited |
| Koury silt loam, 0 to 1 percent slopes, frequently flooded | 38K | Moderately well drained | C | Very limited | Very limited |
| Penning very fine sandy loam, 0 to 2 percent slopes | 20K | Moderately well drained | C | Somewhat limited | Very limited |
| Pophers silty clay loam, 0 to 1 percent slopes, frequently flooded | 14K | Somewhat poorly drained | C | Very limited | Very limited |
| Water greater than 40 acres in size | 13K | D | Not rated | Not rated | |
| Moswell loam, 1 to 5 percent slopes | 12K | Well drained | D | Very limited | Very limited |
| Herty loam, 1 to 3 percent slopes | 12K | Moderately well drained | D | Very limited | Very limited |
| Lovelady loamy fine sand, 1 to 5 percent slopes | 11K | Well drained | A | Somewhat limited | Very limited |
| Colita fine sandy loam, 1 to 3 percent slopes | 11K | Somewhat poorly drained | B | Somewhat limited | Very limited |
| Ozias-Pophers complex, 0 to 1 percent slopes, frequently flooded | 9K | Somewhat poorly drained | D | Very limited | Very limited |
| Rosenwall fine sandy loam, 5 to 15 percent slopes | 8K | Moderately well drained | D | Very limited | Very limited |
| Fuller fine sandy loam, 0 to 1 percent slopes | 8K | Somewhat poorly drained | D | Very limited | Very limited |
| Kurth fine sandy loam, 5 to 8 percent slopes | 7K | Moderately well drained | C | Very limited | Very limited |
| Rosenwall fine sandy loam, 1 to 5 percent slopes | 7K | Moderately well drained | D | Very limited | Very limited |
| Colita-Laska complex, 0 to 2 percent slopes | 7K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Alazan very fine sandy loam, 0 to 2 percent slopes | 5K | Moderately well drained | C | Very limited | Very limited |
| Keltys fine sandy loam, 5 to 8 percent slopes | 4K | Moderately well drained | C/D | Very limited | Very limited |
What This Means
Building & Foundations
About 66% 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 96% 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.