This page summarizes USDA SSURGO mapped soil information for Pima 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 |
|---|---|---|---|
| 6 | Bucklebar-Hayhook-Tubac complex, 0 to 3 percent slopes | 223,003.42 | 3.79% |
| 45 | Nahda-Stagecoach complex, 1 to 15 percent slopes | 122,599.78 | 2.08% |
| 56 | Soledad-Topawa complex, 1 to 5 percent slopes | 122,506.46 | 2.08% |
| 44 | Mohall-Trix complex, 0 to 1 percent slopes | 119,583.37 | 2.03% |
| 43 | Mohall-Pahaka complex, 1 to 3 percent slopes | 105,293.8 | 1.79% |
| 207 | Lithic Argiustolls, Typic Haplustolls, and Aridic Calciustolls; warm mesic ustic mountains | 100,855.01 | 1.71% |
| 16 | Delnorte-Stagecoach complex, 1 to 20 percent slopes | 88,013.58 | 1.5% |
| 204 | Calcic Petrocalcids, Typic Haplocalcids, and Lithic Ustic Torriorthents; cool thermic aridic fan remnants and hills | 79,493.95 | 1.35% |
| 5 | Coolidge, Denure, and Rillito, dry, 0 to 5 percent slopes | 75,764.38 | 1.29% |
| 18 | Delthorny-Garzona-Rock outcrop complex, 15 to 60 percent slopes | 75,463.02 | 1.28% |
| 58 | Pantano-Granolite complex, 5 to 25 percent slopes | 75,385.3 | 1.28% |
| 36 | Hayhook-Sahuarita complex, 1 to 5 percent slopes | 74,777.84 | 1.27% |
| 40 | Lajitas-Bosa-Rock outcrop complex, 15 to 50 percent slopes | 72,718.82 | 1.24% |
| 15 | Dateland-Denure complex, 0 to 3 percent slopes | 70,502.14 | 1.2% |
| 12 | Lomitas, Rock outcrop, Quilotosa, and Rizzo, dry, 15 to 65 percent slopes | 70,000.05 | 1.19% |
| Component | Drainage Class | Hydrologic Group | Estimated Acres | % of Mapped Area |
|---|---|---|---|---|
| Unnamed soils | Unspecified | Unspecified | 812,881.33 | 13.82% |
| Rock outcrop | Well drained, Excessively drained | D | 222,116.58 | 3.78% |
| Hayhook | Well drained | A | 155,880.62 | 2.65% |
| Gunsight | Well drained, Somewhat excessively drained | B, A | 148,421.05 | 2.52% |
| Bucklebar | Well drained | C, B | 143,791.75 | 2.45% |
| Mohall | Well drained | C | 140,727.94 | 2.39% |
| Denure | Somewhat excessively drained, Well drained | A | 140,292.79 | 2.39% |
| Stagecoach | Somewhat excessively drained, Well drained | A | 123,464.86 | 2.1% |
| Tubac | Well drained | C | 117,003.95 | 1.99% |
| Rillito | Well drained, Somewhat excessively drained | B, A | 102,978.93 | 1.75% |
| Caralampi | Well drained | C | 99,919.99 | 1.7% |
| Lampshire | Well drained | D | 88,194.5 | 1.5% |
| Sahuarita | Well drained | C | 84,704.89 | 1.44% |
| Nahda | Well drained | D | 82,248.24 | 1.4% |
| Casa Grande | Well drained | C | 78,019.82 | 1.33% |
Hydrologic soil groups are USDA/NRCS classifications related to runoff potential under specified soil conditions. They are not a property-level flood-risk rating.