Alfalfa County, Oklahoma
The most common soil here is Grant, on about 16% of the land: a silt loam, smooth, like flour. Pond Creek and Dale come next.
About 80% of the land drains well, and 9% stays wet for long stretches; groundwater comes within two feet of the surface under 9% of it.
USDA rates 52% of the land very limited for a standard septic drain field, and 38% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 12% of the land floods occasionally or more, and bedrock lies within 40 inches under 10% 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 Alfalfa 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 Alfalfa 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 |
|---|---|---|---|---|---|
| Pond Creek silt loam, 0 to 1 percent slopes | 71K | Well drained | B | Somewhat limited | Somewhat limited |
| Grant silt loam, 1 to 3 percent slopes | 46K | Well drained | B | Somewhat limited | Somewhat limited |
| Dale silt loam, 0 to 1 percent slopes, rarely flooded | 38K | Well drained | B | Very limited | Somewhat limited |
| Pond Creek silt loam, 1 to 3 percent slopes | 20K | Well drained | B | Somewhat limited | Somewhat limited |
| Grant-Nash complex, 3 to 8 percent slopes, eroded | 20K | Well drained | B | Not limited | Somewhat limited |
| Yahola fine sandy loam, 0 to 1 percent slopes, occasionally flooded | 17K | Well drained | A | Very limited | Very limited |
| Salt flats, frequently flooded, occasionally ponded | 17K | Somewhat poorly drained | D | Very limited | Very limited |
| Reinach very fine sandy loam, 0 to 1 percent slopes, rarely flooded | 16K | Well drained | B | Very limited | Somewhat limited |
| Carwile, ponded-Devol complex, 0 to 3 percent slopes | 16K | Poorly drained | C/D | Very limited | Very limited |
| Grant silt loam, 3 to 5 percent slopes | 15K | Well drained | B | Somewhat limited | Somewhat limited |
| Gracemont fine sandy loam, saline, 0 to 1 percent slopes, frequently flooded | 15K | Somewhat poorly drained | A/D | Very limited | Very limited |
| Eda sand, 3 to 8 percent slopes | 14K | Somewhat excessively drained | A | Not limited | Very limited |
| Quinlan-Woodward complex, 5 to 30 percent slopes | 14K | Well drained | D | Very limited | Very limited |
| Lovedale fine sandy loam, 1 to 3 percent slopes | 12K | Well drained | B | Not limited | Very limited |
| Goltry-Tivoli fine sands, 5 to 12 percent slopes | 12K | Moderately well drained | A | Somewhat limited | Very limited |
| Brewer silt loam, 0 to 1 percent slopes, rarely flooded | 11K | Moderately well drained | C | Very limited | Very limited |
| Water | 11K | D | Not rated | Not rated | |
| Devol fine sandy loam, 0 to 3 percent slopes | 10K | Well drained | A | Not limited | Very limited |
| Eda sand, 0 to 3 percent slopes | 10K | Somewhat excessively drained | A | Not limited | Very limited |
| Woodward-Quinlan complex, 1 to 3 percent slopes | 10K | Well drained | C | Somewhat 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 38% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 52% 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.