Sedgwick County, Colorado
The most common soil here is Rago, on about 15% of the land: a silt loam, smooth, like flour. Richfield and Kuma come next.
About 93% of the land drains well, and 6% stays wet for long stretches; groundwater comes within two feet of the surface under 2% of it.
USDA rates 65% of the land very limited for a standard septic drain field, and 24% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 4% of the land floods occasionally or more, and bedrock lies within 40 inches under 4% 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 Sedgwick County, Colorado, 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 C (slow infiltration, moderate 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 Sedgwick County, Colorado. 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 |
|---|---|---|---|---|---|
| Rago and kuma silt loams, 0 to 3 percent slopes | 78K | Well drained | C | Not limited | Very limited |
| Richfield loam, 0 to 3 percent slopes | 47K | Well drained | C | Not limited | Not limited |
| Eckley-Chappell complex, 9 to 20 percent slopes | 33K | Excessively drained | B | Very limited | Very limited |
| Valent fine sand, rolling | 19K | Excessively drained | A | Very limited | Very limited |
| Haxtun loamy sand, 0 to 3 percent slopes | 17K | Well drained | C | Not limited | Very limited |
| Keith-Kuma silt loams, 0 to 3 percent slopes | 14K | Well drained | B | Not limited | Somewhat limited |
| Keith and tripp loams, 0 to 1 percent slopes | 11K | Well drained | B | Not limited | Somewhat limited |
| Richfield loam, 3 to 5 percent slopes | 9K | Well drained | C | Not limited | Not limited |
| Bayard-Ascalon-Manter sandy loams, 5 to 12 percent slopes | 9K | Well drained | A | Somewhat limited | Very limited |
| Wages gravelly loam, 3 to 5 percent slopes | 9K | Well drained | B | Not limited | Not limited |
| Marksbutte fine sandy loam, 0 to 3 percent slopes | 8K | Somewhat poorly drained | Very limited | Very limited | |
| Wages gravelly loam, 5 to 9 percent slopes | 8K | Well drained | B | Not limited | Not limited |
| Bayard-Canyon complex, 5 to 12 percent slopes | 7K | Well drained | A | Somewhat limited | Very limited |
| Keith, goshen, and kuma silt loams, 0 to 3 percent slopes | 7K | Well drained | B | Not limited | Very limited |
| Sandy alluvial land | 6K | Somewhat excessively drained | Very limited | Very limited | |
| Wet alluvial land | 6K | Poorly drained | Very limited | Very limited | |
| Campus-Richfield loams, 3 to 5 percent slopes | 4K | Well drained | C | Somewhat limited | Very limited |
| Chappell sandy loam, 1 to 3 percent slopes | 4K | Well drained | A | Not limited | Not limited |
| Chappell loamy sand, 1 to 3 percent slopes | 4K | Well drained | A | Not limited | Not limited |
| Valent fine sand, hilly | 4K | Excessively 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 24% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 65% 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.