Yukon Flats Area, Alaska
The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 Yukon Flats Area, Alaska.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Seventeenmile, sandy substratum-Typic Cryaquents, silty-Scaup association, 0 to 3 percent slopes | 556K | Well drained | B | Not limited | Very limited |
| Water | 446K | Not rated | Not rated | ||
| Typic Haplocryepts-Folistic Haplorthels-Typic Histoturbels complex, 3 to 35 percent slopes | 418K | Well drained | C | Very limited | Very limited |
| Kingslough-Jokinaugh association, 0 to 3 percent slopes | 406K | Poorly drained | C | Very limited | Very limited |
| Chissovun-Tajittro-Gushdoiman complex, 0 to 3 percent slopes | 381K | Poorly drained | C/D | Very limited | Very limited |
| Typic Haplocryepts-Typic Histoturbels association, 3 to 35 percent slopes | 313K | Well drained | C | Very limited | Very limited |
| Yanert-Nuntragut-Twin complex, 0 to 3 percent slopes | 294K | Very poorly drained | C/D | Very limited | Very limited |
| Tlozhavun-Yasuda association, 0 to 3 percent slopes | 291K | Well drained | B | Very limited | Very limited |
| Seventeenmile, sandy substratum-Draanjik-Yasuda complex, 0 to 3 percent slopes | 271K | Well drained | B | Not limited | Very limited |
| Sussaymin-Gushdoiman-Hydric Cryofibrists, dysic complex, 0 to 1 percent slopes | 264K | Very poorly drained | B/D | Very limited | Very limited |
| Tlozhavun-Choonjik-Tajittro-Yasuda complex, 0 to 3 percent slopes | 263K | Well drained | B | Very limited | Very limited |
| Tlozhavun-Tajittro-Gwichin-Yasuda complex, 0 to 3 percent slopes | 232K | Moderately well drained | C/D | Very limited | Very limited |
| Seventeenmile-Canvasback complex, 0 to 3 percent slopes | 194K | Well drained | B | Not limited | Very limited |
| Gwichin-Nuntragut-Yasuda complex, 0 to 3 percent slopes | 185K | Moderately well drained | C/D | Very limited | Very limited |
| Tajittro-Chissovun-Gushdoiman complex, 0 to 3 percent slopes | 185K | Very poorly drained | C/D | Very limited | Very limited |
| Tajittro-Yanert complex, 0 to 3 percent slopes | 173K | Moderately well drained | C/D | Very limited | Very limited |
| Typic Cryaquents, gravelly substratum-Typic Cryaquents, silty complex, 0 to 3 percent slopes | 172K | Very poorly drained | B/D | Very limited | Very limited |
| Typic Histoturbels-Typic Haplocryepts association, 3 to 35 percent slopes | 171K | Poorly drained | C/D | Very limited | Very limited |
| Seventeenmile-Yasuda association, 0 to 3 percent slopes | 157K | Well drained | B | Not limited | Very limited |
| Seventeenmile-Kocacho complex, 0 to 3 percent slopes | 157K | Well drained | B | Not limited | Very limited |
What This Means
Building & Foundations
About 67% of soils are rated "very limited" for dwellings with basements. Specific challenges include poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 91% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.