High Quality Content by WIKIPEDIA articles! Malibou Lake is a small, artificial lake in the Santa Monica Mountains, as well as a community, near Agoura Hills, California, USA. Located within Malibu Creek State Park, and almost completely surrounded by the Santa Monica Mountains National Recreation Area, is situated between Malibu Beach and the Conejo Valley of Ventura County, California. It was created in 1926 after a dam was built at the confluence of two creeks, the lake and community of 250 residents are private.