Chugach St. Elias and Boundary Ranges - Coastal Rainforest 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 Chugach St. Elias and Boundary Ranges - Coastal Rainforest Area, Alaska.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Southern Alaska Coastal Mountains-Maritime Alpine-Barren Mountains | 107K | Not rated | Not rated | ||
| Southern Alaska Coastal Mountains-Maritime Subalpine and Alpine-Mountains | 92K | Very limited | Very limited | ||
| Southern Alaska Coastal Mountains-Maritime Lowland-Flood Plains and Terraces | 8K | Very poorly drained | A/D | Very limited | Very limited |
| Southern Alaska Coastal Mountains-Maritime Upland-Mountains | 4K | Moderately well drained | B/D | Very limited | Very limited |
What This Means
Building & Foundations
About 49% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 49% 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.