Crook County, Wyoming
The most common soil here is Louviers, on about 5% of the land: a clay, sticky when wet and rock-hard when dry. Samsil and Lakoa come next.
About 97% of the land drains well.
USDA rates 80% of the land very limited for a standard septic drain field, and 73% 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 58% 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 Crook County, 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 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 Crook County, 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 |
|---|---|---|---|---|---|
| Lakoa-Crownest complex, 10 to 60 percent slopes | 97K | Well drained | D | Very limited | Very limited |
| Tollflat-Hickok-Vanocker complex, 10 to 60 percent slopes | 70K | Well drained | B | Very limited | Very limited |
| Louviers clay, 3 to 30 percent slopes | 65K | Well drained | D | Very limited | Very limited |
| Samsil-Cromack complex, 10 to 30 percent slopes | 53K | Well drained | D | Very limited | Very limited |
| Louviers-Grummit complex, 10 to 30 percent slopes | 53K | Well drained | D | Very limited | Very limited |
| Fairburn-Ucross loams, 10 to 30 percent slopes | 38K | Well drained | D | Very limited | Very limited |
| Winler-Razor clay loams, 2 to 10 percent slopes | 34K | Well drained | D | Very limited | Very limited |
| Citadel-McCooley complex, 10 to 40 percent slopes | 31K | Well drained | C | Very limited | Very limited |
| Boneek loam, 2 to 6 percent slopes | 30K | Well drained | C | Somewhat limited | Very limited |
| Grummit-Querc complex, 3 to 10 percent slopes | 29K | Well drained | D | Very limited | Very limited |
| Butche-Spangler complex, 10 to 30 percent slopes | 28K | Excessively drained | D | Very limited | Very limited |
| Larkson, dry-Lakoa loams, 10 to 60 percent slopes | 25K | Well drained | C | Very limited | Very limited |
| Bidman-Bone loams, 0 to 2 percent slopes | 24K | Well drained | C | Very limited | Somewhat limited |
| Louviers-Rock outcrop complex, 3 to 30 percent slopes | 23K | Well drained | D | Very limited | Very limited |
| Rock outcrop-Vanocker, dry complex, 40 to 75 percent slopes | 23K | Well drained | D | Very limited | Very limited |
| Tollflat-Hickok loams, 3 to 10 percent slopes | 21K | Well drained | C | Somewhat limited | Very limited |
| Tassel-Shingle complex, 10 to 30 percent slopes | 20K | Well drained | D | Very limited | Very limited |
| Samsil-Gaynor complex, 2 to 10 percent slopes | 20K | Well drained | D | Very limited | Very limited |
| Cromack-Echeta-Leiter complex, 6 to 10 percent slopes | 19K | Well drained | D | Very limited | Very limited |
| Butche-Spangler complex, 3 to 10 percent slopes | 19K | Excessively drained | D | 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 73% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes. A geotechnical assessment is recommended before building.
Septic Systems
About 80% 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.