Navajo Mountain Area, Arizona, Parts of Apache, Coconino and Navajo Counties
The dominant drainage class is Excessively 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 Navajo Mountain Area, Arizona, Parts of Apache, Coconino and Navajo Counties.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Rock outcrop-Mathis-Nalcase complex, 10 to 50 percent slopes | 206K | D | Not rated | Not rated | |
| Santrick-Nalcase-Rock outcrop complex, 1 to 15 percent slopes | 193K | Somewhat excessively drained | B | Very limited | Very limited |
| Rock outcrop-Needle-Lithic Torriorthents complex, 1 to 25 percent slopes | 160K | D | Not rated | Not rated | |
| Arabrab-Vessilla-Lindrith complex, 1 to 45 percent slopes | 152K | Somewhat excessively drained | C | Very limited | Very limited |
| Denazar-Sheppard-Lithic Torriorthents complex, 1 to 20 percent slopes | 149K | Excessively drained | A | Somewhat limited | Somewhat limited |
| Pinepoint-Parkwash-Rock outcrop complex, 1 to 10 percent slopes | 145K | D | Not rated | Very limited | |
| Ustic Torriorthents-Rock outcrop complex, 2 to 65 percent slopes | 139K | Well drained | C | Very limited | Very limited |
| Sheppard-Needle-Rock outcrop complex, 2 to 20 percent slopes | 126K | Excessively drained | A | Somewhat limited | Somewhat limited |
| Mespun-Nalcase-Bispen complex, 0 to 10 percent slopes | 126K | Somewhat excessively drained | A | Not limited | Not limited |
| Mespun-Councelor-Mespun, limy substratum complex, 0 to 10 percent slopes | 126K | Excessively drained | A | Not limited | Not limited |
| Mespun-Bispen-Rock outcrop complex, moist, 1 to 15 percent slopes | 116K | Excessively drained | A | Not limited | Not limited |
| Gotho-Aneth family complex, 1 to 10 percent slopes | 91K | Well drained | C | Very limited | Very limited |
| Mespun-Rock outcrop-Nalcase complex, 1 to 25 percent slopes | 88K | D | Not rated | Not rated | |
| Sheppard-Massadona-Monue complex, 0 to 10 percent slopes | 78K | Excessively drained | A | Not limited | Very limited |
| Rock outcrop-Mido-Mido, loamy substratum complex, 2 to 15 percent slopes | 58K | D | Not rated | Not rated | |
| Councelor-Moclom-Hawaikuh complex, 1 to 60 percent slopes | 51K | Excessively drained | C | Not limited | Very limited |
| Mespun-Santrick-Rock outcrop complex, mormon ridges, 2 to 40 percent slopes | 46K | Excessively drained | A | Not limited | Not limited |
| Typic Torriorthents-Needle-Moenkopie family complex, 2 to 12 percent slopes | 43K | Well drained | D | Very limited | Very limited |
| Reef-Mido-Zukan complex, 2 to 35 percent slopes | 34K | Well drained | D | Very limited | Very limited |
| Aridic Ustorthents-Royosa-Plumasano complex, 0 to 15 percent slopes | 27K | Excessively drained | C | Very limited | Very limited |
What This Means
Building & Foundations
About 31% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 44% of soils have significant septic limitations, while others are more suitable. A perc test is essential — conditions vary across the area.
Gardening & Agriculture
Soils tend to drain very quickly, meaning nutrients and water don't stick around long. Raised beds with amended soil, drip irrigation, and heavy mulching will give the best results. Compost is your best friend here — it improves water retention dramatically.