Miramar Reservoir is found in Scripps Miramar Ranch community, a part of San Diego, California. The reservoir has a surface area of 162 acres with a maximum depth of 114 feet. Miramar Reservoir was built as part of the 1960 San Diego Aqueduct project. The water originates from Colorado River and California Aqueduct. The San Diego Water Authority manages the lake. This is the most popular recreation site for local residents.
Visitors can enjoy fishing, boating, picnicking, and several miles of hiking trails. A five mile long trail wraps around Lake Miramar and across the dam. In 2007 the stretch of trail over the dam was reopened after its closure to the public for safety as a result of the 9-11 attacks. Views from the lake and trails include Mira Mesa, Miramar University City, and the northern San Diego communities.
Also located at this site is the Miramar Water Treatment Plant. The plant was formed in 1962 and they have served over 500,000 customers in the northern section. They began upgrading the plant in 1998. The project is set to complete in 2011. The state is adding chlorine and ozone disinfection to the process for a better cleaning process.