Carter County, Oklahoma
The most common soil here is Windthorst, on about 17% of the land: a very fine sandy loam, gritty and crumbly. Weatherford and Konsil come next.
About 71% of the land drains well; groundwater comes within two feet of the surface under 3% of it.
USDA rates 71% of the land very limited for a standard septic drain field, and 43% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 13% of the land floods occasionally or more, and bedrock lies within 40 inches under 14% 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 Carter 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 Alfisols — moderately leached forest soils with a clay-enriched subsoil. 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 Carter 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 |
|---|---|---|---|---|---|
| Windthorst-Weatherford complex, 5 to 12 percent slopes | 77K | Well drained | C | Somewhat limited | Very limited |
| Konsil and Weatherford soils, 1 to 8 percent slopes, gullied | 37K | Well drained | B | Somewhat limited | Somewhat limited |
| Pulaski and Bunyan soils, 0 to 1 percent slopes, frequently flooded | 32K | Well drained | B | Very limited | Very limited |
| Normangee loam, 3 to 5 percent slopes, eroded | 25K | Moderately well drained | D | Very limited | Very limited |
| Konsil loamy fine sand, 3 to 8 percent slopes | 24K | Well drained | B | Somewhat limited | Somewhat limited |
| Windthorst fine sandy loam, 3 to 8 percent slopes, eroded | 24K | Moderately well drained | C | Somewhat limited | Very limited |
| Kiti-Rock outcrop complex, 5 to 30 percent slopes | 22K | Well drained | D | Very limited | Very limited |
| Weatherford fine sandy loam, 1 to 3 percent slopes | 18K | Well drained | B | Not limited | Somewhat limited |
| Weatherford-Duffau complex, 3 to 8 percent slopes | 18K | Well drained | B | Not limited | Somewhat limited |
| Konsil loamy fine sand, 0 to 3 percent slopes | 16K | Well drained | B | Somewhat limited | Somewhat limited |
| Windthorst fine sandy loam, 3 to 5 percent slopes | 14K | Moderately well drained | C | Somewhat limited | Very limited |
| Steedman clay loam, 5 to 20 percent slopes | 12K | Moderately well drained | D | Very limited | Very limited |
| Tamford-Grainola complex, 5 to 12 percent slopes | 12K | Well drained | D | Very limited | Very limited |
| Weatherford fine sandy loam, 3 to 5 percent slopes | 10K | Well drained | B | Not limited | Somewhat limited |
| Durant loam, 1 to 3 percent slopes | 10K | Moderately well drained | D | Very limited | Very limited |
| Heiden clay, 5 to 12 percent slopes | 10K | Well drained | D | Very limited | Very limited |
| Windthorst very fine sandy loam, 1 to 3 percent slopes | 10K | Moderately well drained | C | Somewhat limited | Very limited |
| Windthorst-Darnell-Rock outcrop complex, 5 to 25 percent slopes | 9K | Moderately well drained | C | Somewhat limited | Very limited |
| Kiti-Grainola complex, 5 to 20 percent slopes | 9K | Well drained | D | Very limited | Very limited |
| Weatherford fine sandy loam, 1 to 5 percent slopes, eroded | 9K | Well drained | B | Not limited | Somewhat 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 43% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
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.