Robinson Mountains and Gulf of Alaska Coast Area, Alaska
The dominant drainage class is Very poorly drained and the dominant hydrologic group is B/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 Robinson Mountains and Gulf of Alaska Coast Area, Alaska.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Southern Alaska Coastal Mountains-Maritime Alpine-Barren Mountains | 779K | Not rated | Not rated | ||
| Alexander Archipelago-Gulf of Alaska Coast-Maritime Water, Saline | 200K | Very limited | Very limited | ||
| Southern Alaska Coastal Mountains-Maritime Subalpine and Alpine-Mountains | 123K | Very limited | Very limited | ||
| Alexander Archipelago-Gulf of Alaska Coast-Maritime Upland-Glaciofluvial Plains and Beaches | 117K | Poorly drained | B/D | Very limited | Very limited |
| Alexander Archipelago-Gulf of Alaska Coast-Maritime Upland and Subalpine-Rounded Mountains | 98K | Very poorly drained | A/D | Very limited | Very limited |
| Alexander Archipelago-Gulf of Alaska Coast-Maritime Upland-Hills, Recently Glaciated | 97K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Alexander Archipelago-Gulf of Alaska Coast-Maritime Lowland-Coastal Plains, Deltas and Mud Flats | 79K | Very poorly drained | B/D | Very limited | Very limited |
| Alexander Archipelago-Gulf of Alaska Coast-Maritime Subalpine and Alpine-Rounded Mountains | 14K | Very limited | Very limited | ||
| Southern Alaska Coastal Mountains-Maritime Water, Fresh | 4K | Very limited | Very limited | ||
| Southern Alaska Coastal Mountains-Maritime Upland-Mountains, Recently Glaciated | 2K | Somewhat poorly drained | B | Very limited | Very limited |
What This Means
Building & Foundations
About 48% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 48% of soils have significant septic limitations, while others are more suitable. A perc test is essential — conditions vary across the area.
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.