Lincoln County, Oklahoma
The most common soil here is Stephenville, on about 16% of the land: a fine sand, loose sand that holds almost no water. Darnell and Grainola come next.
About 91% of the land drains well, and 3% stays wet for long stretches; groundwater comes within two feet of the surface under 14% of it.
USDA rates 96% of the land very limited for a standard septic drain field, and 68% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 14% of the land floods occasionally or more, and bedrock lies within 40 inches under 66% 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 Lincoln 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 D (very slow infiltration, high runoff). 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 Lincoln 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 |
|---|---|---|---|---|---|
| Darnell-Stephenville complex, 3 to 12 percent slopes | 118K | Excessively drained | D | Very limited | Very limited |
| Darnell-Stephenville complex, 3 to 12 percent slopes, severely eroded | 65K | Excessively drained | D | Very limited | Very limited |
| Coyle and Seminole soils, 3 to 5 percent slopes, severely eroded | 49K | Well drained | C | Somewhat limited | Very limited |
| Renthin-Grainola complex, 3 to 5 percent slopes, severely eroded | 45K | Well drained | D | Very limited | Very limited |
| Grainola-Ironmound complex, 5 to 15 percent slopes | 35K | Well drained | D | Very limited | Very limited |
| Pulaski fine sandy loam, 0 to 1 percent slopes, occasionally flooded | 26K | Well drained | A | Very limited | Very limited |
| Stephenville fine sandy loam, 3 to 5 percent slopes | 22K | Well drained | C | Somewhat limited | Very limited |
| Grainola-Ashport, frequently flooded, complex, 0 to 12 percent slopes | 20K | Well drained | D | Somewhat limited | Very limited |
| Easpur loam, 0 to 1 percent slopes, occasionally flooded | 19K | Well drained | A | Very limited | Very limited |
| Renthin silty clay loam, 3 to 5 percent slopes, eroded | 17K | Well drained | D | Very limited | Very limited |
| Seminole loam, 3 to 5 percent slopes, eroded | 14K | Moderately well drained | C/D | Very limited | Very limited |
| Coyle loam, 3 to 5 percent slopes, eroded | 13K | Well drained | C | Somewhat limited | Very limited |
| Ashport clay loam, 0 to 1 percent slopes, occasionally flooded | 10K | Well drained | B | Very limited | Very limited |
| Stephenville fine sandy loam, 3 to 5 percent slopes, moderately eroded | 10K | Well drained | C | Somewhat limited | Very limited |
| Masham-Lucien complex, 5 to 20 percent slopes | 9K | Well drained | D | Very limited | Very limited |
| Dougherty loamy fine sand, 3 to 8 percent slopes | 9K | Well drained | B | Not limited | Very limited |
| Ashport, Port and Pulaski soils, 0 to 1 percent slopes, frequently flooded | 8K | Well drained | B | Very limited | Very limited |
| Stephenville fine sandy loam, 1 to 3 percent slopes | 8K | Well drained | C | Somewhat limited | Very limited |
| Harrah fine sandy loam, 5 to 8 percent slopes | 7K | Well drained | B | Not limited | Very limited |
| Tribbey fine sandy loam, 0 to 1 percent slopes, frequently flooded | 7K | Somewhat poorly drained | B | Very 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 68% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 96% 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
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.