Aleutian Islands - Sanak Islands Area, Alaska
The dominant drainage class is Well drained and the dominant hydrologic group is A (high infiltration, low runoff). The most common soil order is Andisols — soils formed in volcanic ash, very light and porous. 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 Aleutian Islands - Sanak Islands Area, Alaska. 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 |
|---|---|---|---|---|---|
| Southern Alaska Peninsula Mountains-Maritime Water, Saline | 30K | Not rated | Not rated | ||
| Aleutian Islands-Western Alaska Peninsula-Maritime Upland-Glaciated Plains | 8K | Well drained | A | Very limited | Very limited |
| Aleutian Islands-Western Alaska Peninsula-Maritime Upland-Rounded Mountains and Hills | 324 | Well drained | A | 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
Most soils are generally favorable for residential construction. Standard foundations are usually viable, though site-specific evaluation is always recommended.
Septic Systems
Most soils are reasonably suitable for conventional septic systems, though site-specific conditions always matter. Get a perc test to confirm.
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.