Eastern Pinal and Southern Gila Counties, Arizona
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 Eastern Pinal and Southern Gila Counties, Arizona.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Bucklebar-Hayhook complex, 1 to 10 percent slopes | 116K | Well drained | C | Somewhat limited | Very limited |
| Tubac-Rillino complex, 3 to 25 percent slopes | 113K | Well drained | C | Very limited | Very limited |
| Sasabe-Stronghold complex, 1 to 15 percent slopes | 106K | Well drained | C | Very limited | Very limited |
| Romero-Rock outcrop-Oracle complex, 10 to 45 percent slopes | 83K | Well drained | D | Very limited | Very limited |
| Selevin-Tombstone-Saddlebrook complex, 3 to 45 percent slopes | 58K | Well drained | C | Very limited | Very limited |
| Mohall-Contine complex, 0 to 5 percent slopes | 55K | Well drained | C | Very limited | Very limited |
| Cellar-Rock outcrop complex, 5 to 70 percent slopes | 55K | Somewhat excessively drained | D | Very limited | Very limited |
| Oracle-Romero-Combate complex, 1 to 20 percent slopes | 54K | Well drained | D | Very limited | Very limited |
| Stagecoach-Haplogypsids-Delnorte complex, 5 to 80 percent slopes | 49K | Somewhat excessively drained | A | Very limited | Very limited |
| Cellar-Anklam-Rock outcrop complex, 20 to 70 percent slopes | 47K | Somewhat excessively drained | D | Very limited | Very limited |
| Rock outcrop-Lajitas complex, 5 to 60 percent slopes | 42K | D | Not rated | Not rated | |
| Dateland-Denure complex, 0 to 3 percent slopes | 41K | Well drained | A | Not limited | Somewhat limited |
| Nahda-Delnorte complex, 1 to 10 percent slopes | 36K | Well drained | D | Very limited | Very limited |
| Stagecoach-Delnorte complex, 5 to 45 percent slopes | 35K | Somewhat excessively drained | A | Very limited | Very limited |
| Denure-Mohall complex, 1 to 5 percent slopes | 31K | Well drained | A | Not limited | Not limited |
| Queencreek soils and riverwash, 0 to 5 percent slopes | 30K | Excessively drained | A | Very limited | Very limited |
| Rock outcrop-Lampshire complex, 10 to 60 percent slopes | 28K | D | Not rated | Not rated | |
| Ohaco-Cave complex, 1 to 15 percent slopes | 28K | Well drained | D | Very limited | Very limited |
| Pantano-Anklam-Rock outcrop complex, 3 to 20 percent slopes | 28K | Well drained | D | Very limited | Very limited |
| Beardsley-Suncity complex, 1 to 10 percent slopes | 26K | Well drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 75% 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 86% 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.