Caddo County, Oklahoma
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 Caddo County, Oklahoma.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Noble fine sandy loam, 3 to 8 percent slopes | 74K | Well drained | A | Not limited | Very limited |
| Darnell-Noble association, 3 to 12 percent slopes | 66K | Well drained | D | Very limited | Very limited |
| Pond Creek fine sandy loam, 1 to 3 percent slopes | 50K | Well drained | C | Somewhat limited | Very limited |
| Pond Creek silt loam, 1 to 3 percent slopes | 41K | Well drained | B | Somewhat limited | Somewhat limited |
| Ironmound-Dill complex, 3 to 12 percent slopes | 34K | Well drained | D | Very limited | Very limited |
| Dougherty-Eufaula complex, 3 to 8 percent slopes | 31K | Well drained | B | Not limited | Very limited |
| Minco very fine sandy loam, 3 to 8 percent slopes | 29K | Well drained | B | Not limited | Somewhat limited |
| Port silt loam, 0 to 1 percent slopes, occasionally flooded | 25K | Well drained | B | Very limited | Very limited |
| Tillman silty clay loam, 1 to 3 percent slopes | 24K | Well drained | C | Somewhat limited | Very limited |
| Ironmound-Nash complex, 5 to 12 percent slopes | 24K | Well drained | D | Very limited | Very limited |
| Binger fine sandy loam, 3 to 5 percent slopes | 23K | Well drained | C | Somewhat limited | Very limited |
| Grant loam, 3 to 5 percent slopes | 21K | Well drained | B | Not limited | Somewhat limited |
| Binger fine sandy loam, 5 to 8 percent slopes, eroded | 19K | Well drained | C | Somewhat limited | Very limited |
| Minco silt loam, 1 to 3 percent slopes | 18K | Well drained | B | Not limited | Somewhat limited |
| Darnell-Noble association, 12 to 30 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Pond Creek silt loam, 0 to 1 percent slopes | 17K | Well drained | B | Somewhat limited | Somewhat limited |
| Binger and Grant soils, 3 to 8 percent slopes, severely eroded | 17K | Well drained | C | Somewhat limited | Very limited |
| Grant loam, 1 to 3 percent slopes | 16K | Well drained | B | Not limited | Somewhat limited |
| Gracemont and Ezell soils, 0 to 1 percent slopes, frequently flooded | 15K | Somewhat poorly drained | A | Very limited | Very limited |
| Noble fine sandy loam, 1 to 3 percent slopes | 13K | Well drained | A | Not limited | Very limited |
What This Means
Building & Foundations
About 31% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 75% 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.