The Mulholland Dam is a Los Angeles Department of Water and Power dam located in the Hollywood Hills of Los Angeles, California, east of the Hollywood Freeway. Designed with a storage capacity of 7,900 acre⋅ft (9,700,000 m3) of water at a maximum depth of 183 feet (56 m), the dam forms the Hollywood Reservoir, which collects water from various aqueducts and impounds the creek of Weid Canyon.

Hollywood Reservoir is a reservoir located in the Hollywood Hills, situated in the Santa Monica Mountains and north of the Hollywood neighborhood of Los Angeles, California. It is maintained by the Los Angeles Department of Water and Power. The reservoir and surrounding neighborhood lie east of the Hollywood Freeway and are overlooked, from a distance, by the Hollywood Sign.