Pecos County, Texas
The dominant drainage class is 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 Pecos County, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Ector-Rock outcrop complex, 10 to 60 percent slopes | 546K | Well drained | D | Very limited | Very limited |
| Reagan-Hodgins association, nearly level | 452K | Well drained | B | Somewhat limited | Somewhat limited |
| Reakor association, nearly level | 346K | Well drained | C | Somewhat limited | Very limited |
| Lozier association, hilly | 276K | Well drained | D | Very limited | Very limited |
| Sanderson-Upton complex, 1 to 8 percent slopes | 239K | Well drained | B | Not limited | Somewhat limited |
| Ector-Rock outcrop association, 1 to 15 percent slopes | 205K | Well drained | D | Very limited | Very limited |
| Upton association, gently sloping | 159K | Well drained | D | Very limited | Very limited |
| Dalby clay, 0 to 1 percent slopes | 135K | Well drained | D | Very limited | Very limited |
| Ector-Upton association, 0 to 5 percent slopes | 126K | Well drained | D | Very limited | Very limited |
| Delnorte association, gently undulating | 82K | Well drained | D | Very limited | Very limited |
| Lozier-Rock outcrop association, steep | 73K | D | Very limited | Very limited | |
| Iraan silty clay loam, 0 to 2 percent slopes, occasionally flooded | 69K | Well drained | C | Very limited | Very limited |
| Reakor silty clay loam, 0 to 1 percent slopes | 45K | Well drained | C | Somewhat limited | Very limited |
| Orla association, nearly level | 36K | Well drained | B | Very limited | Not limited |
| Monahans-Pajarito association, nearly level | 35K | Well drained | B | Very limited | Somewhat limited |
| Pecos-Patrole-Arno association | 31K | Moderately well drained | D | Very limited | Very limited |
| Reeves-Hoban association, nearly level | 28K | Well drained | B | Very limited | Somewhat limited |
| Balmorhea association | 28K | Somewhat poorly drained | C | Very limited | Very limited |
| Hoban silty clay loam, 0 to 1 percent slopes | 24K | Well drained | B | Very limited | Not limited |
| Reagan silty clay loam, saline | 23K | Well drained | B | Somewhat limited | Somewhat limited |
What This Means
Building & Foundations
About 62% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 71% 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
Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.