Chollas Lake in College Area is a 16-acre San Diego reservoir-turned-recreation park at 6350 College Grove Dr in the 92115 ZIP, accessible from the State Route 94 freeway via the College Avenue exit. Built in 1901 as part of the city's early water-supply infrastructure, the reservoir was transferred to the Parks and Recreation Department in 1966 and designated a youth-only fishing lake in 1971 — making it the only lake in San Diego County restricted to anglers ages 15 and under. The lake is stocked with largemouth bass, bluegill, and catfish year-round, and the California Department of Fish and Wildlife adds rainbow trout during winter months. A 0.8-mile dirt loop trail circles the water and connects to a secondary nature-trail system that climbs into the surrounding chaparral hillsides, providing a low-impact cardio option that pairs with the strength-training programs runners and walkers maintain at Landform Fitness in College Area. Saturday and Sunday fishing clinics run by park rangers teach knot-tying, bait selection, and casting technique, while a separate intro-to-archery program covers stance, aim, and release mechanics for participants ages eight and up. Gloria's Mesa playground sits one driveway west of the main parking lot, and a smaller swing set on the south shoreline faces the water. Picnic shelters with charcoal-grill stations are available by permit, and exercise-station equipment — including pull-up bars, push-up platforms, and a balance beam — lines the loop trail. The post-walk crowd filters over to Ultreya Coffee and Tea in College Area for the post-activity caffeine stop. Carved tree-stump sculptures dot the shoreline, a resident flock of geese and ducks occupies the south bank, and birdwatching programs operate through the ranger station.