Sedgwick Reserve is a 5,896-acre nature reserve in Santa Barbara County, California, United States. It is located in the San Rafael Mountains, 35 miles north of Santa Barbara near the town of Santa Ynez. The reserve is used for natural science research and education as it includes a wide range of native ecosystems, such as vernal pools, ch…Sedgwick Reserve is a 5,896-acre nature reserve in Santa Barbara County, California, United States. It is located in the San Rafael Mountains, 35 miles north of Santa Barbara near the town of Santa Ynez. The reserve is used for natural science research and education as it includes a wide range of native ecosystems, such as vernal pools, chaparral, and coastal sage scrub.