Diamond Valley Lake is a lifeline for Southern California in times of drought. The lake holds enough water to meet the area’s emergency and drought needs for six months and is an important component in Metropolitan’s plan to provide a reliable supply of water to the 18 million people in Southern California who count on us.

Diamond Valley Lake has a substantial trail system that allows visitors to hike and ride through the hills surrounding the reservoir. The first set of trails is along the north hills overlooking the lake, and another set circumnavigates the lake. Discover California's greatest fishing at Diamond Valley Lake. Southern California's largest reservoir is a treasure trove for serious anglers.

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