117,000-acre U.S. Fish & Wildlife Service refuge in the Altar Valley protecting semi-desert grassland, reintroduced masked bobwhite quail and pronghorn, and rich birding along Arivaca Cienega and Arivaca Creek. Occasional jaguar records from the contiguous border sky-island corridor. Open public refuge roads, National Recreation Trails at the cienega, and visitor information at refuge headquarters near Sasabe.
Field facts
| Region | Pima County, AZ |
|---|---|
| Coordinates | 31.5501, -111.5507 |
| Era | Refuge established 1985 |
| Peak | Grassland birds / masked bobwhite |
| Access | Paved AZ-286 + refuge roads |
| Nearby | Arivaca / Sasabe / Organ Pipe NM |
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Public recreation data — BLM & Recreation.gov (RIDB). Verify current access, fees, and seasonal closures before traveling.
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