Brooks Foothills - Toolik River Area, Alaska
The dominant drainage class is Somewhat 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 Brooks Foothills - Toolik River Area, Alaska.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Arctic Foothills-Arctic Upland-Hills and Plains | 1.4M | Somewhat poorly drained | B/D | Very limited | Very limited |
| Arctic Foothills-Arctic Upland-Glaciated Hills and Plains | 602K | Poorly drained | B/D | Very limited | Very limited |
| Arctic Foothills-Arctic Lowland-Flood Plains and Terraces | 55K | Poorly drained | D | Very limited | Very limited |
| Northern Brooks Range Mountains-Arctic Upland-Rounded Mountains | 24K | Well drained | B | Very limited | Very limited |
| Northern Brooks Range Mountains-Arctic Upland-Rugged Mountains, Calcareous | 14K | Well drained | A | Very limited | Very limited |
| Arctic Foothills-Arctic Upland-Loess Plains and Hills | 11K | Very poorly drained | C/D | Very limited | Very limited |
| Northern Brooks Range Mountains-Arctic Upland and Lowland-Glaciated Valleys | 1K | Poorly drained | D | 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.