Public Utilities Commission (SFPUC) began steady releases after the dam was re-built in 2018. The steady flow releases, and accompanying lowered water temperatures, resulted in a sharp increase in the numbers of trout. Plane crash discovery In the late 1980s and early 1990s, a drought affected California, and water levels in reservoirs throughout the state became extraordinarily low. By January 1991, the water at the reservoir was down , and the aluminum body of an airplane became visible. Two skeletons were found at the site on January 5, 1991. Dental records and the plane's serial number were used to positively identify the remains as Clifford Gillman and his single-engine Ercoupe, along with Gillman's friend Robert Louviere. They had been missing since June 16, 1963. The wreck, minus the two men's remains, is still lying in the center of the reservoir. See also Arroyo Hondo (Santa Clara County, California) Black Mountain (Milpitas, California) List of dams and reservoirs in California List of lakes in California References Loomis, Patricia. Milpitas: A Century of Little Cornfields External links San Francisco Water Sources, including Calaveras Reservoir Reservoirs in Santa Clara County, California Hetch Hetchy Project Reservoirs in California Reservoirs in Northern California 1925 establishments in California