Upper Otay Reservoir was used as a hatchery of sorts for Florida strain largemouths. Fish were captured there and moved into other waters in the San Diego municipal water system
As far as I know, going back to the late 60's/early 70's when I started fishing, Lower Otay Reservoir was open to the public for fishing.
About Upper Otay Reservoir
The smallest of the City of San Diego's impounding reservoirs, Upper Otay Reservoir was established in 1959 as a hatchery for the propagation and introduction of Florida-strain largemouth bass. Remarkably, 21 of the 25 largest bass in history were the progeny of the fingerlings used in that experiment. The reservoir has been open to the public since 1996. When full, Upper Otay Reservoir has 20 surface acres.
About Lower Otay Reservoir
In 1897, the first Lower Otay Dam was completed by the Southern California Mountain Water Co. The Lower Otay Reservoir was connected to the City of San Diego's water system in 1906 via the Bonita Pipeline. Following heavy rains, the dam burst in 1916 and the Otay Valley was flooded. The dam was rebuilt in 1918 and renamed Savage Dam. When full, Lower Otay Reservoir has 1,100 surface acres, a maximum water depth of 137.5 feet, and 25 shoreline miles. Lower Otay Reservoir has a water storage capacity of 47,066.9 acre feet. Water levels are monitored weekly. The reservoir is the home of the United States Olympic Training Center for rowing sports.
Those are from sandiego.gov website for reservoirs. The links go wonky if I try to post them
