Big Creek is a tributary of the San Joaquin River in California. Big Creek, California is named after the creek. The Big Creek Project is one of the most extensive hydroelectric systems in the world, though it is not located entirely on Big Creek. It is owned by Southern California Edison. There are seven power plants in the system, Portal, Mammoth and Big Creek 1, 2, 2A, 3, 4 and 8. The lakes in the project include Huntington Lake, Shaver Lake, Redinger Lake, Florence Lake, Lake Edison, Mammoth Pool Reservoir. The terminus of the system is the outlet of Big Creek 4, which discharges into the San Joaquin River several miles downstream from Redinger Dam. The San Joaquin passes through many more powerhouses downstream, including A.G. Wishon and the powerhouse at Friant Dam. A tributary (or affluent or confluent) is a contributory stream, a river that does not reach the sea, but joins another major river (a parent river), to which it contributes its waters, swelling its discharge. ... The San Joaquin River, 330 miles (530 km) long, is the second-longest river in California, United States. ... Official language(s) English Capital Sacramento Largest city Los Angeles Area  Ranked 3rd  - Total 158,302 sq. ... Big Creek is a tributary of the San Joaquin River. ... Hydroelectric dam diagram The waters of Llyn Stwlan, the upper reservoir of the Ffestiniog Pumped-Storage Scheme in north Wales, can just be glimpsed on the right. ... Southern California Edison, the largest subisdiary of Edison Internationl (NYSE: EIX), is the primary electicity supply company for much of the lower half of the State of California, the region known as Southern California. ... A power station (also power plant) is a facility for the generation of electric power. ... A photo of Friant Dam taken in 2003. ...