Johnson County Area, Wyoming, Northern Part
The most common soil here is Shingle, on about 14% of the land: a clay loam, firm and a little sticky. Theedle and Kishona come next.
About 98% of the land drains well.
USDA rates 78% of the land very limited for a standard septic drain field, and 68% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 3% of the land floods occasionally or more, and bedrock lies within 40 inches under 77% 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 Johnson County Area, Wyoming, Northern Part, 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 Aridisols — dry-climate soils with limited organic matter and often calcium carbonate accumulation. 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 Johnson County Area, Wyoming, Northern Part. 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 |
|---|---|---|---|---|---|
| Samday-Shingle-Badland complex, 10 to 45 percent slopes | 165K | Well drained | D | Very limited | Very limited |
| Theedle-Kishona-Shingle loams, 3 to 30 percent slopes | 130K | Well drained | C | Very limited | Very limited |
| Theedle-Shingle loams, 3 to 30 percent slopes | 125K | Well drained | C | Very limited | Very limited |
| Shingle-Wibaux complex, 0 to 60 percent slopes | 41K | Well drained | D | Very limited | Very limited |
| Forkwood-Cushman loams, 6 to 15 percent slopes | 38K | Well drained | B | Somewhat limited | Somewhat limited |
| Theedle-Kishona loams, 6 to 20 percent slopes | 32K | Well drained | C | Somewhat limited | Very limited |
| Cambria-Kishona loams, 0 to 6 percent slopes | 29K | Well drained | B | Somewhat limited | Somewhat limited |
| Cambria-Kishona loams, 6 to 15 percent slopes | 29K | Well drained | B | Somewhat limited | Somewhat limited |
| Savageton-Samday clay loams, 3 to 15 percent slopes | 23K | Well drained | D | Very limited | Very limited |
| Skelridge, very stony-Delridge-Yamacall complex, 10 to 50 percent slopes | 21K | Well drained | B | Very limited | Very limited |
| Vonalee-Terro-Taluce fine sandy loams, 3 to 30 percent slopes | 18K | Well drained | A | Somewhat limited | Very limited |
| Cloud Peak-Dullknife complex, 10 to 70 percent slopes | 17K | Well drained | C | Very limited | Very limited |
| Clarkelen-Haverdad complex, 0 to 3 percent slopes, rarely flooded | 13K | Well drained | B | Very limited | Somewhat limited |
| Rock outcrop-Cloud Peak association, 10 to 70 percent slopes | 12K | D | Not rated | Not rated | |
| Leavitt-Passcreek loams, 2 to 30 percent slopes | 12K | Well drained | C | Very limited | Very limited |
| Renohill-Savageton clay loams, 3 to 15 percent slopes | 12K | Well drained | D | Somewhat limited | Very limited |
| Lucky-Burgess-Hazton association, 2 to 30 percent slopes | 11K | Well drained | C | Very limited | Very limited |
| Forkwood-Ulm loams, 0 to 6 percent slopes | 11K | Well drained | B | Somewhat limited | Somewhat limited |
| Fairburn-Ironbutte-Rock outcrop complex, 0 to 60 percent slopes | 11K | Well drained | D | Very limited | Very limited |
| Wibaux-Shingle-Taluce complex, 6 to 40 percent slopes | 11K | Well 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 68% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 78% 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.