Carbon County Area, Wyoming
The most common soil here is Seminoe, on about 2% of the land: a sandy loam, gritty and crumbly. Rock River and McFadden come next.
About 64% of the land drains well, and 3% stays wet for long stretches; groundwater comes within two feet of the surface under 3% of it.
USDA rates 45% of the land very limited for a standard septic drain field, and 32% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 2% of the land floods occasionally or more, and bedrock lies within 40 inches under 33% 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 Carbon County Area, Wyoming, 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 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 Carbon County Area, Wyoming. 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 |
|---|---|---|---|---|---|
| No Digital Data Available | 1.4M | Not rated | Not rated | ||
| Rabbitears-Inchau complex, 8 to 30 percent slopes | 63K | Well drained | C | Very limited | Very limited |
| Rogert-Lucky complex, 5 to 35 percent slopes, very stony | 50K | Well drained | D | Very limited | Very limited |
| Millerlake-Lymanson complex, 1 to 12 percent slopes | 49K | Well drained | C | Not limited | Very limited |
| Blazon-Cushool association, 2 to 20 percent slopes -- draft | 49K | Well drained | D | Very limited | Very limited |
| McFadden-Blackhall-Edlin sandy loams, 5 to 50 percent slopes -- draft | 45K | Well drained | A | Very limited | Very limited |
| Ouray taxadjunct-Zeona-Dune land complex, 2 to 25 percent slopes | 42K | Well drained | A | Very limited | Very limited |
| Sagecreek alkali-Sagecreek loams, 0 to 10 percent slopes -- draft | 41K | Well drained | B | Not limited | Somewhat limited |
| Foreright-Hawksell complex, 0 to 25 percent slopes | 38K | Well drained | B | Not limited | Somewhat limited |
| Cundick-Lymanson-Starman complex, 3 to 25 percent slopes | 37K | Well drained | C | Very limited | Very limited |
| Abston-Seaverson complex, 0 to 6 percent slopes -- draft | 36K | Well drained | D | Very limited | Very limited |
| Cushool-Worfman-Blackhall sandy loams, 6 to 30 percent slopes -- draft | 35K | Well drained | D | Very limited | Very limited |
| Sandbranch fine sandy loam, 0 to 6 percent slopes -- draft | 34K | Well drained | C | Somewhat limited | Not limited |
| McFadden-Brownsto-Rawlins complex 6 to 20 percent slopes -- draft | 34K | Well drained | A | Somewhat limited | Somewhat limited |
| Tresano-Red Desert complex, 0 to 15 percent slopes -- draft | 34K | Well drained | B | Somewhat limited | Somewhat limited |
| Rentsac-Rock outcrop complex, 15 to 50 percent slopes -- draft | 33K | Well drained | D | Very limited | Very limited |
| Cushool-Rock River association, 3 to 10 percent slopes -- draft | 32K | Well drained | B | Not limited | Not limited |
| Littlesage-Kindt complex, 1 to 10 percent slopes | 30K | Well drained | D | Very limited | Very limited |
| Debone loams, 0 to 10 percent slopes -- draft | 29K | Well drained | D | Very limited | Not limited |
| McFadden-Blackhall sandy loams, 2 to 15 percent slopes -- draft | 29K | Well drained | A | Not limited | Not 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 32% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 45% of soils have significant septic limitations, while others are more suitable. A perc test is essential — conditions vary across the area.
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.