Pacific Flyway refuge at the south end of the Salton Sea where managed wetlands, fields, and desert uplands support huge seasonal concentrations of waterfowl, shorebirds, and rarities. The visitor center on West Sinclair Road anchors the Rock Hill Trail to a small volcanic cone with Sea overlooks; Unit 1 offers an observation tower and photo blinds. One of the West's premier desert birding destinations despite the Sea's environmental challenges.
Field facts
| Region | Imperial County, CA |
|---|---|
| Coordinates | 33.1773, -115.6156 |
| Access | Visitor center at 906 W Sinclair Rd, Calipatria; free; Rock Hill Trail ~2 mi RT; Unit 1 at Bannister & Vendel roads |
| Managing agency | U.S. Fish & Wildlife Service |
| Highlights | 400+ bird species recorded historically; Rock Hill overlook; Hardenberger Trail blinds |
| Elevation | ~227 ft below sea level |
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Public recreation data — BLM & Recreation.gov (RIDB). Verify current access, fees, and seasonal closures before traveling.
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