Kaibab National Forests, Arizona, Parts of Coconino, Mohave and Yavapai Counties
The dominant drainage class is Well 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 Kaibab National Forests, Arizona, Parts of Coconino, Mohave and Yavapai Counties.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Pluto-Procky complex, 1 to 14 percent slopes | 188K | Well drained | C | Very limited | Very limited |
| Kanabownits fine sandy loam, 4 to 44 percent slopes | 109K | Moderately well drained | B | Very limited | Very limited |
| Phizphre-Tovar-Toqui complex, coconino plateau, 1 to 12 percent slopes | 104K | Well drained | D | Very limited | Very limited |
| Pocomate-Rock outcrop complex, kaibab plateau, 6 to 66 percent slopes | 95K | Well drained | D | Very limited | Very limited |
| Thunderbird-Ferno complex, 2 to 23 percent slopes | 78K | Well drained | D | Very limited | Very limited |
| Pluto-Grandwash complex, 6 to 33 percent slopes | 69K | Well drained | C | Somewhat limited | Very limited |
| Hosta-Thunderbird complex, 1 to 11 percent slopes | 55K | Well drained | D | Very limited | Very limited |
| Kanabownits-Kippers-Kaiparowits complex, 1 to 20 percent slopes | 55K | Moderately well drained | C | Very limited | Very limited |
| Phizphre-Tovar-Toqui complex, kaibab plateau, 1 to 23 percent slopes | 43K | Well drained | D | Very limited | Very limited |
| Pinntank-Pocomate complex, kaibab plateau, 1 to 23 percent slopes | 43K | Well drained | C | Very limited | Very limited |
| Phizphre-Tovar-Rock outcrop complex, kaibab plateau, 6 to 66 percent slopes | 42K | Well drained | D | Very limited | Very limited |
| Chunkmonk-Wodomont-Rock outcrop complex, 2 to 30 percent slopes | 36K | Well drained | D | Very limited | Very limited |
| Rock outcrop-Meriwhitica complex, 5 to 101 percent slopes | 34K | D | Not rated | Not rated | |
| Atarque-Yumtheska-Rock outcrop, 1 to 18 percent slopes | 32K | Well drained | D | Very limited | Very limited |
| Purpleheart-Pluto complex, 0 to 4 percent slopes | 31K | Well drained | C | Very limited | Very limited |
| Goldust-Thunderbird complex, 4 to 35 percent slopes | 28K | Well drained | D | Very limited | Very limited |
| Atarque-Moquistation complex, 0 to 10 percent slopes | 28K | Well drained | D | Very limited | Very limited |
| Wodomont-Atlatl-Rock outcrop complex, 1 to 10 percent slopes | 27K | Well drained | D | Very limited | Very limited |
| Tovar-Whiskey-Phizphre complex, 1 to 5 percent slopes | 23K | Well drained | D | Very limited | Very limited |
| Toqui-Yumtheska-Rock outcrop complex, 2 to 17 percent slopes | 21K | Well drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 91% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes. A geotechnical assessment is recommended before building.
Septic Systems
About 97% 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
Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.