Hualapai-Havasupai Area, Arizona, Parts of Coconino, Mohave, and Yavapai Counties
The most common soil here is Torriorthents, on about 6% of the land. Curhollow and Wodomont come next.
About 78% of the land drains well.
USDA rates 74% of the land very limited for a standard septic drain field, and 66% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: bedrock lies within 40 inches under 84% of it.
Soils change over short distances, so look up an address below for the soil at that exact spot and the reasons behind each rating.
The soils you're most likely standing on
The biggest named soils in Hualapai-Havasupai Area, Arizona, Parts of Coconino, Mohave, and Yavapai Counties, each drawn five feet deep from its official USDA description, in its recorded colors.
Dots mark gravel; white flecks mark lime. Shares are by acres across the survey area, and each mapped patch usually mixes several of these soils.
The biggest mapped areas
The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high runoff). The most common soil order is Aridisols — dry-climate soils with limited organic matter and often calcium carbonate accumulation. 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 Hualapai-Havasupai Area, Arizona, Parts of Coconino, Mohave, and Yavapai Counties. Search your address to find the exact soil composition, drainage, and series details at your specific location.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Rock outcrop-Torriorthents complex, 35 to 120 percent slopes | 229K | D | Not rated | Not rated | |
| Natank-Disterheff-Yumtheska complex, 2 to 35 percent slopes | 88K | Well drained | D | Very limited | Very limited |
| Hindu-Rock outcrop complex, 5 to 45 percent slopes | 74K | Well drained | D | Very limited | Very limited |
| Curhollow-Rolie-Meriwhitica association, 1 to 35 percent slopes | 70K | Well drained | D | Very limited | Very limited |
| Winona-Rock outcrop-Tusayan complex, 15 to 55 percent slopes | 51K | Well drained | D | Very limited | Very limited |
| Toqui-Yumtheska complex, 2 to 30 percent slopes | 46K | Well drained | D | Very limited | Very limited |
| Wodomont-Rock outcrop complex, 5 to 40 percent slopes | 46K | Well drained | D | Very limited | Very limited |
| Curhollow-Puertecito complex, 1 to 12 percent slopes | 41K | Well drained | D | Very limited | Very limited |
| Deama-Rock outcrop complex, 25 to 55 percent slopes | 36K | Well drained | D | Very limited | Very limited |
| Topocoba-Wodomont complex, 2 to 15 percent slopes | 34K | Well drained | D | Very limited | Very limited |
| Splanod-Rock outcrop complex, 2 to 15 percent slopes | 32K | D | Not rated | Not rated | |
| Winona-Curhollow complex, 1 to 12 percent slopes | 30K | Well drained | D | Very limited | Very limited |
| Ustorthents-Rock outcrop complex, 35 to 90 percent slopes | 29K | Well drained | D | Not rated | Not rated |
| Rizno-Rock outcrop complex, 2 to 15 percent slopes | 28K | Well drained | D | Very limited | Very limited |
| Pinntank-Pocomate-Retsover complex, 1 to 30 percent slopes | 27K | Well drained | D | Very limited | Very limited |
| Poley-Rolie complex, 1 to 8 percent slopes | 26K | Well drained | C | Somewhat limited | Very limited |
| Rolie-Dean complex, 2 to 20 percent slopes | 25K | Well drained | D | Somewhat limited | Very limited |
| Metuck-Rock outcrop complex, 15 to 60 percent slopes | 20K | Well drained | D | Very limited | Very limited |
| Wodomont-Coconino complex, 2 to 15 percent slopes | 18K | Well drained | D | Very limited | Very limited |
| Luzena-Thunderbird complex, 3 to 20 percent slopes | 17K | Well drained | D | Very limited | Very limited |
Soil Orders in This Area
The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.
What This Means
Building & Foundations
About 66% 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 74% 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.