Sulphur Creek Dam is a dam across Sulphur Creek

Sulphur Creek (California)

Sulphur Creek is a tributary of Aliso Creek in Orange County in the U.S. state of California. Draining about of mostly residential land in the southern San Joaquin Hills, it is the creek's largest tributary....

 in Orange County

Orange County, California

Orange County is a county in the U.S. state of California. Its county seat is Santa Ana. As of the 2010 census, its population was 3,010,232, up from 2,846,293 at the 2000 census, making it the third most populous county in California, behind Los Angeles County and San Diego County...

, in the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

. The dam and the Sulphur Creek Reservoir

Sulphur Creek Reservoir

Sulphur Creek Reservoir is an artificial fishing and recreational lake in Laguna Niguel, California. It is created by the Sulphur Creek Dam, which was completed in 1966. It is located at and is above sea level. It is fed from two sources, one of which is Sulphur Creek itself and one is a storm...

 (also known as Laguna Niguel Lake) lie entirely within the city of Laguna Niguel

Laguna Niguel, California

Laguna Niguel is an affluent city located in southern Orange County, California. The name "Laguna Niguel" is derived from the Spanish word "Laguna" which means lagoon, and the word "Nigueli" which was the name of a Juaneño Indian village that was once located on Aliso Creek. The population was...

. It is an earthfill structure 42 feet (12.8 m) high and 485 feet (147.8 m) long; its reservoir is used for water reclamation storage and recreational use as well as being the main attraction of Laguna Niguel Regional Park

Laguna Niguel Regional Park

Laguna Niguel Regional Park is a public park in Laguna Niguel, in southern Orange County, California. Its main feature is Sulphur Creek Reservoir, located within the park's boundaries.Laguna Niguel's 4th of July fireworks show is held at the park every year....

, which surrounds it.