Historic hot-springs settlement on the Maricopa–Yuma county line north of the Gila River near Hyder. Jesuit Jacobo Sedelmayr recorded Santa Maria del Agua Caliente in 1744; the springs later supported a frontier stage and resort stop after long Indigenous use. Today it is a scant desert historic locale, not a developed public spa—confirm land ownership and avoid trespass.
Field facts
| Region | Maricopa County, AZ |
|---|---|
| Coordinates | 32.9853, -113.3243 |
| County | Maricopa (border with Yuma) |
| Name meaning | Spanish 'hot water' |
| Early name | Santa Maria del Agua Caliente (1744) |
| Setting | Gila River desert / Hyder corridor |
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