Nulato Hills Area, Alaska
The dominant drainage class is 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 Nulato Hills Area, Alaska.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Mountmcdonald-Iiguk-Kanguq association, 0 to 45 percent slopes | 111K | Well drained | D | Very limited | Very limited |
| Cilla-Pokercreek-Shortycove complex 4 to 20 percent slopes | 77K | Moderately well drained | B/D | Very limited | Very limited |
| Sikinik-Nikaat-Asulu complex, 0 to 5 percent slopes | 74K | Poorly drained | D | Very limited | Very limited |
| Nulatohills-Cuyaqsak complex, 20 to 70 percent slopes | 59K | Well drained | A | Very limited | Very limited |
| Sikinik-Runkelscreek association, 0 to 4 percent slopes | 55K | Poorly drained | D | Very limited | Very limited |
| Apun-Willowcreek association, 3 to 20 percent slopes | 54K | Poorly drained | D | Very limited | Very limited |
| Sikinik-Ukpik association, 0 to 4 percent slopes | 53K | Poorly drained | D | Very limited | Very limited |
| Cilla-Bonasila-Cuyaqsak association, 8 to 45 percent slopes | 53K | Moderately well drained | C | Very limited | Very limited |
| Tuma-Tolukowuk-Chiroskey complex, 5 to 35 percent slopes | 51K | Well drained | B | Very limited | Very limited |
| Nikaat mucky peat, 1 to 4 percent slopes | 44K | Poorly drained | B/D | Very limited | Very limited |
| Nulatohills-Cascadecreek complex, 20 to 85 percent slopes | 40K | Well drained | A | Very limited | Very limited |
| Cascadecreek-Cilla-Golsovia association, 25 to 70 percent slopes | 39K | Well drained | B | Very limited | Very limited |
| Imak-Pokercreek complex, 1 to 22 percent slopes | 37K | Poorly drained | C/D | Very limited | Very limited |
| Nunapik-Iiguk association, 0 to 15 percent slopes | 37K | Poorly drained | D | Very limited | Very limited |
| Ottercreek-Peke association, 4 to 20 percent slopes | 36K | Poorly drained | B/D | Very limited | Very limited |
| Cascadecreek-Cuyaqsak-Nuvuk association, 8 to 45 percent slopes | 35K | Moderately well drained | C | Very limited | Very limited |
| Teacreek-Golsovia association, 15 to 70 percent slopes | 33K | Poorly drained | B/D | Very limited | Very limited |
| Paugna-Mountmcdonald complex, 0 to 65 percent slopes | 33K | Well drained | B | Very limited | Very limited |
| Ottercreek-Ukpik-Apun association, 5 to 15 percent slopes | 27K | Poorly drained | B/D | Very limited | Very limited |
| Mountmcdonald-Bonasila association, 2 to 25 percent slopes | 27K | Well 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 shallow bedrock, steep slopes, poor drainage in some 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.