Canadian County, Oklahoma
The most common soil here is Norge, on about 15% of the land: a silt loam, smooth, like flour. Bethany and Port come next.
About 91% of the land drains well, and 4% stays wet for long stretches; groundwater comes within two feet of the surface under 4% of it.
USDA rates 61% of the land very limited for a standard septic drain field, and 45% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 10% of the land floods occasionally or more, and bedrock lies within 40 inches under 19% 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 Canadian 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 Canadian 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 |
|---|---|---|---|---|---|
| Norge silt loam, 1 to 3 percent slopes | 49K | Well drained | B | Somewhat limited | Somewhat limited |
| Norge silt loam, 3 to 5 percent slopes | 46K | Well drained | B | Somewhat limited | Somewhat limited |
| Bethany silt loam, 0 to 1 percent slopes | 41K | Well drained | C | Very limited | Very limited |
| Dale silt loam, 0 to 1 percent slopes, rarely flooded | 24K | Well drained | B | Very limited | Somewhat limited |
| Grant-Port, frequently flooded, complex, 0 to 12 percent slopes | 24K | Well drained | B | Somewhat limited | Somewhat limited |
| Kingfisher silt loam, 3 to 5 percent slopes | 20K | Well drained | C | Somewhat limited | Very limited |
| Port silt loam, 0 to 1 percent slopes, occasionally flooded | 20K | Well drained | B | Very limited | Very limited |
| Pond Creek silt loam, 0 to 1 percent slopes | 19K | Well drained | B | Somewhat limited | Somewhat limited |
| Renfrow clay loam, 3 to 5 percent slopes, eroded | 17K | Well drained | D | Very limited | Very limited |
| Canadian fine sandy loam, 0 to 1 percent slopes, rarely flooded | 17K | Well drained | A | Very limited | Very limited |
| Kingfisher silt loam, 1 to 3 percent slopes | 16K | Well drained | C | Somewhat limited | Very limited |
| Lovedale fine sandy loam, 1 to 3 percent slopes | 15K | Well drained | B | Not limited | Very limited |
| Kirkland silt loam, 0 to 1 percent slopes | 13K | Well drained | D | Very limited | Very limited |
| Gracemore loamy fine sand, 0 to 1 percent slopes, occasionally flooded | 13K | Somewhat poorly drained | A/D | Very limited | Very limited |
| Nash-Ironmound complex, 3 to 8 percent slopes | 13K | Well drained | C | Somewhat limited | Very limited |
| Kirkland silt loam, 1 to 3 percent slopes | 12K | Well drained | D | Very limited | Very limited |
| Lovedale fine sandy loam, 3 to 5 percent slopes | 11K | Well drained | B | Not limited | Somewhat limited |
| Water | 10K | D | Not rated | Not rated | |
| Darnell-Noble complex, 15 to 30 percent slopes | 10K | Well drained | D | Very limited | Very limited |
| Gracemore soils, 0 to 1 percent slopes, frequently flooded | 10K | Somewhat poorly drained | A | 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 45% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 61% 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.