This page summarizes USDA SSURGO mapped soil information for Maricopa County, Arizona.
Coverage measures mapped SSURGO intersection with Census land geometry. It does not mean that every parcel or point has complete soil information.
County summaries provide regional context across mapped soil units. Address lookup combines available public datasets for the Census-matched location.
| Symbol | Map Unit Name | Mapped Acres | % of Mapped Area |
|---|---|---|---|
| 203 | Ustic Haplargids and Typic Torriorthents; cool thermic aridic fan piedmonts | 392,342.83 | 9.21% |
| 207 | Lithic Argiustolls, Typic Haplustolls, and Aridic Calciustolls; warm mesic ustic mountains | 312,900.81 | 7.34% |
| 206 | Lithic Argiustolls, Cumulic Haplustolls, rarely flooded, and Typic Ustorthents; warm mesic ustic mountains | 120,330.69 | 2.82% |
| 201 | Typic Haplargids, Ustic Haplocambids, and Ustic Calciargids; warm thermic basins and fan remnants | 110,705.06 | 2.6% |
| 7 | Dateland, Wellton, Rillito, Denure, and Rositas, dry, 0 to 5 percent slopes | 90,756.84 | 2.13% |
| 6 | Bucklebar-Hayhook-Tubac complex, 0 to 3 percent slopes | 76,783.46 | 1.8% |
| 10 | Growler, Mohall, Tucson, and Valencia, occasionally flooded, dry, 1 to 3 percent slopes | 66,138.31 | 1.55% |
| 25 | Tremant, Casa Grande, and Rositas, rarely flooded, occasionally ponded, dry, 0 to 10 percent slopes | 62,103.88 | 1.46% |
| 21 | Denure-Rillito-Why complex, 1 to 5 percent slopes | 55,295.53 | 1.3% |
| 6 | Coolidge, Denure, and Rillito, dry, 0 to 5 percent slopes | 53,379.35 | 1.25% |
| 45 | Nahda-Stagecoach complex, 1 to 15 percent slopes | 46,548.13 | 1.09% |
| 44 | Mohall-Trix complex, 0 to 1 percent slopes | 44,599.52 | 1.05% |
| 21 | Lomitas, Rock outcrop, Quilotosa, and Rizzo, dry, 15 to 65 percent slopes | 42,654.67 | 1% |
| 24 | Superstition, Rositas, and Tucson, dry, 0 to 10 percent slopes | 42,117.43 | 0.99% |
| 13 | Gunsight, Chuckawalla, and Carrizo, occasionally flooded, dry, 1 to 10 percent slopes | 41,591.79 | 0.98% |
| Component | Drainage Class | Hydrologic Group | Estimated Acres | % of Mapped Area |
|---|---|---|---|---|
| Unnamed soils | Unspecified | Unspecified | 368,240.48 | 8.64% |
| Ustic Haplargids | Well drained | C | 327,456.33 | 7.68% |
| Lithic Argiustolls | Well drained | D | 220,227.72 | 5.17% |
| Rock outcrop | Unspecified | D | 161,448.3 | 3.79% |
| Gunsight | Somewhat excessively drained | A, B | 129,849.88 | 3.05% |
| Denure | Somewhat excessively drained, Well drained | A, B | 127,513.16 | 2.99% |
| Mohall | Well drained | C | 124,445.6 | 2.92% |
| Rillito | Somewhat excessively drained, Well drained | B, A | 113,067.57 | 2.65% |
| Gilman | Well drained | A, C, B | 96,938.69 | 2.27% |
| Typic Haplustolls | Well drained | C | 93,870.24 | 2.2% |
| Carrizo | Excessively drained | A | 87,408.85 | 2.05% |
| Typic Torriorthents | Excessively drained | A | 78,468.57 | 1.84% |
| Momoli | Somewhat excessively drained, Well drained | A, B | 73,502.77 | 1.72% |
| Casa Grande | Well drained | C | 71,996.24 | 1.69% |
| Quilotosa | Somewhat excessively drained | D | 68,236.74 | 1.6% |
Hydrologic soil groups are USDA/NRCS classifications related to runoff potential under specified soil conditions. They are not a property-level flood-risk rating.