[6] The reservoir has a capacity of 7,900 acre-feet,[7] which is 2.5 billion US gallons (9,500,000 m3) and a maximum water depth of 183 feet (56 m).

Within days after the collapse of the St. Francis Dam in March 1928, William Mulholland ordered the Hollywood Reservoir lowered due, in part, to public fears of a repeat disaster.

Shortly after the disaster and in the years following, several engineering panels met to discuss the safety of the dam.

[3] The surrounding recreational area is known as Lake Hollywood Park, and is open for walking, hiking, and jogging.

The loop on Lake Hollywood Walking Trail is 3.5 miles (5.6 km) long and crosses Mulholland Dam.