Sinaloa Lake is a 12-acre (4.9 ha) reservoir[1] in southwestern Simi Valley.

It has been owned by the Sinaloa Lake Owners Association since the early 1960s.

Originally known as Robertson Lake, it is now named for Sinaloa, Mexico.

Fish species include crappie, largemouth bass and others.

[5] The surrounding community of Sinaloa Lake is an unincorporated area of Ventura County, and voted not to be incorporated into the city of Simi Valley on September 27, 1966.