The reservoir is used for water reclamation storage and recreation, and is the main attraction of Laguna Niguel Regional Park, which surrounds it.

In 1970 the Orange County Flood Control District purchased the dam and reservoir in conjunction with the city of Laguna Niguel for use as a park.

[2] The dam has suffered from siltation issues caused in part by urban runoff in Sulphur Creek which brings mud and debris into the reservoir.

The spillway is also located on the east side of the dam and consists of a concrete overflow section and stilling basin.

The reservoir covers 44 acres (18 ha) and is used for fishing, boating and camping, as well as the Laguna Niguel Fourth of July fireworks show.