Dallam County, Texas
The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 Dallam County, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Dallam loamy fine sand, 0 to 3 percent slopes | 171K | Well drained | B | Somewhat limited | Somewhat limited |
| Dallam fine sandy loam, 0 to 1 percent slopes | 127K | Well drained | B | Not limited | Somewhat limited |
| Gruver loam, 0 to 1 percent slopes | 80K | Well drained | C | Somewhat limited | Very limited |
| Conlen loam, 0 to 3 percent slopes | 77K | Well drained | B | Not limited | Somewhat limited |
| Sunray loam, 0 to 1 percent slopes | 65K | Well drained | B | Somewhat limited | Somewhat limited |
| Vingo and Dallam loamy fine sands, 0 to 8 percent slopes | 53K | Well drained | A | Not limited | Somewhat limited |
| Sherm clay loam, 0 to 1 percent slopes | 44K | Well drained | C | Somewhat limited | Very limited |
| Perico fine sandy loam, 0 to 1 percent slopes | 42K | Well drained | B | Somewhat limited | Somewhat limited |
| Dumas loam, 0 to 1 percent slopes | 36K | Well drained | B | Somewhat limited | Somewhat limited |
| Dallam fine sandy loam, 1 to 3 percent slopes | 34K | Well drained | B | Not limited | Somewhat limited |
| Perico fine sandy loam, 1 to 3 percent slopes | 31K | Well drained | B | Somewhat limited | Somewhat limited |
| Sunray loam, 1 to 3 percent slopes | 31K | Well drained | B | Somewhat limited | Somewhat limited |
| Spurlock fine sandy loam, 0 to 3 percent slopes | 21K | Well drained | B | Not limited | Somewhat limited |
| Texline loam, dry, 0 to 1 percent slopes | 21K | Well drained | B | Somewhat limited | Somewhat limited |
| Rickmore fine sandy loam, 0 to 1 percent slopes | 19K | Well drained | B | Somewhat limited | Somewhat limited |
| Plack loam, dry, 0 to 3 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Kerrick-Plack loams, 0 to 1 percent slopes | 11K | Well drained | C | Somewhat limited | Very limited |
| Spurlock soils, 1 to 8 percent slopes, hummocky | 10K | Well drained | B | Not limited | Somewhat limited |
| Berthoud loam, 3 to 5 percent slopes | 8K | Well drained | B | Somewhat limited | Somewhat limited |
| Dumas loam, 1 to 3 percent slopes | 7K | Well drained | B | Somewhat limited | Somewhat limited |
What This Means
Building & Foundations
Most soils are generally favorable for residential construction. Standard foundations are usually viable, though site-specific evaluation is always recommended.
Septic Systems
Most soils are reasonably suitable for conventional septic systems, though site-specific conditions always matter. Get a perc test to confirm.
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.