<Tr> <Th> Max . depth </Th> <Td> 72 ft (22 m) </Td> </Tr> <Tr> <Th> Water volume </Th> <Td> 73,320 acre ft (0.09044 km) </Td> </Tr> <P> Big Bear Lake is a reservoir in the San Bernardino Mountains, in San Bernardino County, California, United States . At a surface elevation of 6,750 ft (2,060 m), it has an east--west length of approximately 7 mi (11 km) and is approximately 2.5 mi (4.0 km) at its widest measurement, though the lake's width mostly averages a little more than 1 mi (1.6 km). These approximations are based on the lake having an optimum retainable water level . At dam's end Big Bear measures its deepest water at 72 ft (22 m). It is a completely snow - fed lake, having no other means of tributary or mechanical replenishment . </P> <P> Located 100 miles (160 km) east of Los Angeles and surrounded by the San Bernardino National Forest, Big Bear Lake is accessible via four scenic highways: Highway 330 from Highland, Highway 38 from Redlands, Highway 18 from Victorville, and Highway 18 from San Bernardino . </P>

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