Lake Murray is a 171.1-acre reservoir within Mission Trails Regional Park, featuring 3.2 miles of shoreline and a maximum depth of 95 feet. The lake is open for paddling from sunrise to sunset seven days a week, except for the second Tuesday of each month and major holidays (Thanksgiving, Christmas, and New Year's Day).

Access is via the main entrance at 5540 Kiowa Drive in La Mesa. Kayak rentals are available at the concession stand (both single and double kayaks), with rates starting at $20/hour for singles and $25/hour for doubles. A $6 kayak launch permit (cash only) is required for private boats. The lake offers convenient amenities including restrooms, 64 picnic tables, and 10 barbecue areas.

The reservoir provides a controlled environment for paddling, with no swimming allowed and restrictions on motorized boats. Float tube users must stay within 150 feet of shore and display 144 square inches of international orange above the waterline. All boats must carry Coast Guard-approved personal flotation devices and a sound-producing device.

Wildlife viewing opportunities are exceptional, with at least 149 documented bird species including ducks, geese, and herons. The lake supports populations of Florida-strain largemouth bass, bluegill, channel catfish, black crappie, and seasonally stocked trout (November-May).

An asphalt-paved service road lines approximately two-thirds of the lake's perimeter, offering paddlers scenic views of the surrounding landscape. The lake sits below Cowles Mountain, providing an impressive backdrop for paddling activities. The water serves as an important reporting point for aircraft approaching Montgomery-Gibbs Executive Airport.

The reservoir was originally constructed in 1894 as La Mesa Reservoir and gained its current name in 1920. Today, it operates as part of San Diego's public water system while providing year-round recreational opportunities in an urban setting.