This birding hotspot is located at the western end of California Highway 166. It is approximately 15 miles west of Santa Maria and 4.5 miles west of Guadalupe. Highway 166 intersects with Highway 101 in Santa Maria at Main Street. There is a parking lot at the west end of Highway 166. This parking lot and the immediate area are also referred to as Rancho Guadalupe County Park. The Estuary is located immediately north of the parking lot.
The Santa Maria River Estuary has long been considered one of the best birding hotspots in Santa Barbara County. It is a breeding location for the endangered Western Snowy Plover and the endangered Least Tern. More than 200 species have been reported here. In the fall, it isn’t uncommon to see thousands of shearwaters on the horizon. Gray Whale sightings are relatively common from shore.
The adjacent beach is famous for its heavy surf (lots of brave surfers) and great surf fishing. The surrounding dune complex is one of the largest in the United States. It has been the background for numerous movies including the original Cecile B. DeMille’s Ten Commandments and the Disney Film, The Rocketeer.