United States
The dominant drainage class is Very poorly drained and the dominant hydrologic group is D (very slow infiltration, high 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 United States.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Alexander Archipelago-Gulf of Alaska Coast-Maritime Water, Saline | 26.9M | ||||
| Aleutian Islands-Western Alaska Peninsula-Maritime Water, Saline | 25.1M | ||||
| Water (s8369) | 24.1M | ||||
| Southern Alaska Peninsula Mountains-Maritime Water, Saline | 20.9M | ||||
| Arctic Foothills-Arctic Upland-Hills and Plains | 18.9M | Moderately well drained | C | ||
| Interior Alaska Highlands-Boreal Alpine and Upland-Rounded Mountains, Acid | 13.6M | Well drained | B | ||
| Southern Alaska Coastal Mountains-Maritime Alpine-Barren Mountains | 10.7M | ||||
| Arctic Coastal Plain-Arctic Lowland-Coastal Plains, High | 9.9M | Very poorly drained | D | ||
| Interior Alaska Mountains-Boreal Alpine-Barren Mountains | 9.7M | ||||
| Alexander Archipelago-Gulf of Alaska Coast-Maritime Upland and Subalpine-Rounded Mountains | 9.2M | Very poorly drained | C | ||
| Northern Bering Sea Islands-Maritime Water, Saline | 7.8M | ||||
| Yukon-Kuskokwim Coastal Plain-Maritime Lowland-Coastal Plains, Mid-Level | 7.4M | Very poorly drained | D | ||
| Arctic Coastal Plain-Water, Saline | 7.1M | ||||
| Interior Alaska Highlands-Boreal Upland-Hills and Plains | 7.0M | Poorly drained | D | ||
| Yukon-Kuskokwim Coastal Plain-Maritime Water, Saline | 6.3M | ||||
| Yukon Flats-Boreal Upland-Plains and Hills | 5.9M | Poorly drained | D | ||
| Yukon-Kuskokwim Highlands-Boreal Upland-Loess Hills | 5.9M | Poorly drained | D | ||
| Arctic Foothills-Arctic Upland-Loess Plains and Hills | 5.9M | Very poorly drained | C/D | ||
| Yukon-Kuskokwim Highlands-Boreal Upland and Alpine-Rounded Mountains | 5.8M | Well drained | B | ||
| Webster-Nicollet-Clarion-Canisteo (s1750) | 5.4M | Poorly drained | B/D |
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
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.