Loch Lomond is a reservoir in the Santa Cruz Mountains near Lompico, California in Santa Cruz County, California. It was created by building a dam across Newell Creek. The dam is an earthfill barricade, measuring 190 ft (58 m) by 750 ft (230 m). It was completed in the Fall of 1960; impounded water first ran over the spillway in March 1963. The reservoir is 175 acres (71 ha). It is 3 mi (4.8 km) long, 0.25 mi (0.40 km) wide, approximately 150 ft (46 m) deep, with a 9,200 acre·ft (11,300,000 m3) capacity. It provides a portion of the drinking water supply for the city of Santa Cruz, California. Boating, fishing, picnicking and hiking take place at the reservoir. No swimming is allowed.