Stewart River Training Site, Alaska
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate 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 Stewart River Training Site, Alaska.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Sinuktuk-Kiglauik complex, 15 to 25 percent slopes | 6K | Well drained | C | Very limited | Very limited |
| Sinuktuk-Kiglauik-Rock outcrop complex, 25 to 65 percent slopes | 5K | Well drained | C | Very limited | Very limited |
| Sinuktuk-Kiglauik complex, 5 to 15 percent slopes | 5K | Well drained | C | Somewhat limited | Very limited |
| Boldrin-Peluk complex, 0 to 5 percent slopes | 5K | Very poorly drained | D | Very limited | Very limited |
| Nuluk-Belmezok complex | 1K | Somewhat poorly drained | C | Very limited | Very limited |
| Tigaraha-Rock outcrop complex, 0 to 15 percent slopes | 1K | Well drained | C | Somewhat limited | Very limited |
| Tisuk-Dirrant complex, 2 to 15 percent slopes | 728 | Well drained | C | Not limited | Not limited |
| Boldrin-Sinuktuk complex, 0 to 15 percent slopes | 679 | Very poorly drained | D | Very limited | Very limited |
| Imuruk-Tisuk-Dirrant complex, 0 to 30 percent slopes | 599 | Somewhat excessively drained | C | Very limited | Very limited |
| Tuksuk-Kiglauik complex, 5 to 12 percent slopes | 526 | Very poorly drained | D | Very limited | Very limited |
| Boldrin-Peluk complex, 5 to 12 percent slopes | 477 | Very poorly drained | D | Very limited | Very limited |
| Agiapuk-Pinguk complex, 2 to 5 percent slopes | 285 | Well drained | A | Not limited | Very limited |
| Tisuk-Kuzitrin complex, 5 to 20 percent slopes | 246 | Well drained | C | Somewhat limited | Somewhat limited |
| Distin-Cassiterite complex | 212 | Poorly drained | D | Very limited | Very limited |
| Kanauguk-Rock outcrop complex, 5 to 25 percent slopes | 38 | Well drained | C | Very limited | Very limited |
What This Means
Building & Foundations
About 72% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 96% 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.