Hopi Area, Arizona, Parts of Coconino and Navajo Counties
The dominant drainage class is Well drained and the dominant hydrologic group is A (high infiltration, low 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 Hopi Area, Arizona, Parts of Coconino and Navajo Counties.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Sheppard-Monue complex, 1 to 8 percent slopes | 260K | Somewhat excessively drained | A | Not limited | Very limited |
| Kydestea-Zyme-Tonalea complex, 5 to 50 percent slopes | 191K | Well drained | D | Very limited | Very limited |
| Penistaja-Begay complex, 1 to 8 percent slopes | 171K | Well drained | B | Not limited | Not limited |
| Sheppard loamy sand, 1 to 15 percent slopes MLRA 35 | 105K | Excessively drained | A | Not limited | Not limited |
| Nakai-Monue very fine sandy loams, | 78K | Well drained | C | Somewhat limited | Very limited |
| Tewa very fine sandy loam, 1 to 5 percent slopes | 70K | Well drained | C | Not limited | Very limited |
| Rock outcrop-Torriorthents complex, 5 to 60 percent slopes | 69K | D | Not rated | Not rated | |
| Jeddito loamy sand, 0 to 5 percent slopes | 69K | Well drained | A | Not limited | Not limited |
| Jocity fine sandy loam, 0 to 3 percent slopes | 59K | Well drained | C | Very limited | Very limited |
| Typic Torriorthents, 10 to 35 percent slopes | 54K | Well drained | Not rated | Not rated | |
| Travessilla-Rock outcrop complex, 1 to 8 percent slopes | 49K | Well drained | D | Very limited | Very limited |
| Ustic Torriorthents, 10 to 35 percent slopes | 44K | Well drained | Not rated | Not rated | |
| Mido-Begay complex, 1 to 8 percent slopes | 40K | Excessively drained | A | Not limited | Very limited |
| Mido fine sand, 1 to 15 percent slopes | 38K | Excessively drained | A | Not limited | Very limited |
| Badland-Torriorthents complex, 8 to 50 percent slopes | 28K | Not rated | Not rated | ||
| Cannonville clay loam, 15 to 50 percent slopes | 25K | Well drained | D | Very limited | Very limited |
| Polacca clay loam, 0 to 3 percent slopes | 24K | Well drained | C | Not limited | Very limited |
| Monue very fine sandy loam, 1 to 5 percent slopes | 23K | Well drained | A | Not limited | Not limited |
| Wepo clay loam, 0 to 3 percent slopes | 18K | Well drained | C | Somewhat limited | Very limited |
| Strych-Rock outcrop complex, 25 to 60 percent slopes | 17K | Well drained | A | Very limited | Very limited |
What This Means
Building & Foundations
About 23% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 60% 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.