Barren Islands Area, Alaska
The dominant drainage class is Very poorly drained and the dominant hydrologic group is A/D (varies with drainage). 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 Barren Islands Area, Alaska.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Alexander Archipelago-Gulf of Alaska Coast-Maritime Upland and Subalpine-Rounded Mountains | 7K | Very poorly drained | A/D | Very limited | Very limited |
| Alexander Archipelago-Gulf of Alaska Coast-Maritime Upland-Glaciated Plains and Peatlands | 864 | Very poorly drained | A/D | Very limited | Very limited |
| Alexander Archipelago-Gulf of Alaska Coast-Maritime Water, Saline | 309 | Very limited | Very limited |
What This Means
Building & Foundations
About 100% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 100% of soils are rated "very limited" for septic absorption fields. Poorly drained soils can't absorb septic effluent effectively. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Many soils hold water for extended periods. Raised beds are highly recommended to improve drainage for vegetables. Well-adapted native plants and water-loving species will do best in natural conditions.