Calpine is a census-designated place in Sierra County, California, United States. Calpine sits at an elevation of 5,689 feet (1,734 m). The 2020 United States census reported Calpine's population was 223.
Yuba Pass is a mountain pass on State Route 49 in Sierra County in the U.S. state of California. The pass lies at an elevation of 6,710 ft (2,050 m) about 3.4 air miles west of Sattley, on the divide between the North Yuba River and the Middle Fork Feather River (Sierra Valley).