Fremont County, Idaho, Western Part
The dominant drainage class is Well drained and the dominant hydrologic group is A (high infiltration, low runoff). 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 Fremont County, Idaho, Western Part.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Katseanes-Rock outcrop-Vadnais complex, 1 to 12 percent slopes | 44K | Well drained | D | Very limited | Very limited |
| Jipper-Nayrib-Stipe complex, 1 to 8 percent slopes | 28K | Well drained | A | Somewhat limited | Very limited |
| St. Anthony gravelly sandy loam, 0 to 4 percent slopes | 27K | Well drained | A | Not limited | Very limited |
| Vadnais-Rock outcrop-Hagenbarth complex, 1 to 12 percent slopes | 23K | Well drained | C | Very limited | Very limited |
| Rock outcrop-Vadnais complex, 1 to 12 percent slopes | 23K | D | Very limited | Very limited | |
| Dune land | 21K | Very limited | Very limited | ||
| Water | 15K | Not rated | Not rated | ||
| Juniperbute fine sand, 2 to 30 percent slopes | 14K | Excessively drained | A | Very limited | Very limited |
| Eginbench loamy fine sand, 0 to 2 percent slopes | 13K | Somewhat poorly drained | A | Very limited | Very limited |
| Rexburg-Ririe silt loams, 4 to 12 percent slopes | 12K | Well drained | B | Not limited | Somewhat limited |
| Nayrib-Stipe complex, 1 to 6 percent slopes | 12K | Well drained | D | Very limited | Very limited |
| Rexburg-Ririe silt loams, 1 to 4 percent slopes | 11K | Well drained | B | Not limited | Somewhat limited |
| Juniperbute-Rock outcrop complex, 1 to 30 percent slopes | 11K | Excessively drained | A | Very limited | Very limited |
| Engett, bedrock substratum-Engett-Blacksan complex, 1 to 6 percent slopes | 10K | Somewhat excessively drained | A | Somewhat limited | Very limited |
| Wolverine fine sand, 4 to 15 percent slopes | 10K | Excessively drained | A | Somewhat limited | Very limited |
| Snowshoe loamy fine sand, 1 to 6 percent slopes | 10K | Well drained | A | Not limited | Somewhat limited |
| Fourme loam, 0 to 4 percent slopes | 9K | Well drained | C | Not limited | Very limited |
| Grassyridge sand, 2 to 20 percent slopes | 9K | Somewhat excessively drained | A | Somewhat limited | Very limited |
| Vadnais-Chickenridge-Rock outcrop complex, 1 to 12 percent slopes | 9K | Well drained | B | Very limited | Very limited |
| Rexburg-Ririe silt loams, bedrock substratums, 1 to 4 percent slopes | 7K | Well drained | B | Somewhat limited | Somewhat limited |
What This Means
Building & Foundations
About 53% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas. A geotechnical assessment is recommended before building.
Septic Systems
About 82% 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.