Caddo County, Oklahoma
The most common soil here is Noble, on about 13% of the land: a fine sandy loam, gritty and crumbly. Pond Creek and Minco come next.
About 96% of the land drains well.
USDA rates 72% of the land very limited for a standard septic drain field, and 36% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 8% of the land floods occasionally or more, and bedrock lies within 40 inches under 31% of it.
Soils change over short distances, so look up an address below for the soil at that exact spot and the reasons behind each rating.
The soils you're most likely standing on
The biggest named soils in Caddo County, Oklahoma, each drawn five feet deep from its official USDA description, in its recorded colors.
Dots mark gravel; white flecks mark lime. Shares are by acres across the survey area, and each mapped patch usually mixes several of these soils.
The biggest mapped areas
The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). The most common soil order is Mollisols — grassland soils with a thick, dark, fertile topsoil rich in organic matter. 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. Search your address to find the exact soil composition, drainage, and series details at your specific location.
| 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 |
Soil Orders in This Area
The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.
What This Means
Building & Foundations
About 36% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 72% 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.