Oak Creek-San Francisco Peaks Area, Arizona, Part of Coconino County
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate 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 Oak Creek-San Francisco Peaks Area, Arizona, Part of Coconino County.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Vertic Haplustalfs, Vertic Paleustalfs, and Typic Argiustolls; cool mesic ustic plateaus | 296K | Well drained | C | Very limited | Very limited |
| Vertic Haplustalfs, Aridic Haplustalfs, and Lithic Argiustolls; warm mesic aridic fan remnants and hills | 197K | Well drained | C | Somewhat limited | Very limited |
| Pachic Argiustolls, Typic Haplustalfs, and Lithic Haplustepts; cool mesic ustic mountains | 149K | Well drained | C | Very limited | Very limited |
| Lithic Argiustolls, Typic Haplustolls, and Vitrandic Haplustolls; cool mesic ustic mountains | 64K | Well drained | D | Very limited | Very limited |
| Aridic Argiustolls, Cumulic Haplustolls, rarely flooded, and Aridic Ustifluvents, rarely flooded; cool mesic ustic hills and fans | 53K | Well drained | C | Very limited | Very limited |
| Lithic Argiustolls, Cumulic Haplustolls, rarely flooded, and Typic Ustorthents; warm mesic ustic mountains | 51K | Well drained | C | Very limited | Very limited |
| Ustic Haplocalcids, Ustic Haplocambids, rarely flooded, and Typic Torripsamments, rarely flooded; cool thermic aridic alluvial fans | 7K | Well drained | B | Very limited | Very limited |
| Tortugas-Daze complex, 0 to 15 percent slopes | 6K | Well drained | D | Very limited | Very limited |
| Daze fine sandy loam, 0 to 8 percent slopes | 6K | Well drained | D | Very limited | Very limited |
| Lithic Argiustolls, Typic Haplustolls, and Aridic Calciustolls; warm mesic ustic mountains | 4K | Well drained | D | Very limited | Very limited |
| Brolliar cobbly clay loam, deep variant, 0 to 5 percent slopes | 3K | Well drained | C | Very limited | Very limited |
| Telephone-Daze complex, 0 to 8 percent slopes | 3K | Well drained | D | Very limited | Very limited |
| Boysag gravelly loam, 0 to 8 percent slopes | 3K | Well drained | D | Very limited | Very limited |
| Tortugas cobbly loam, 2 to 15 percent slopes | 2K | Well drained | D | Very limited | Very limited |
| Brolliar stony clay loam, 2 to 8 percent slopes | 2K | Well drained | D | Very limited | Very limited |
| Brolliar stony clay loam, 0 to 2 percent slopes | 2K | Well drained | D | Very limited | Very limited |
| Lynx loam, 0 to 2 percent slopes | 2K | Well drained | B | Very limited | Very limited |
| Brolliar stony clay loam, 8 to 30 percent slopes | 2K | Well drained | D | Very limited | Very limited |
| Telephone gravelly sandy loam, 0 to 15 percent slopes | 2K | Well drained | D | Very limited | Very limited |
| Baldy stony loam, 2 to 8 percent slopes | 2K | Well drained | B | Not limited | Very limited |
What This Means
Building & Foundations
About 76% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 100% 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.