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Seven Oaks Dam topographic map
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Seven Oaks Dam
Seven Oaks Dam is a 2,980-foot (910 m) long arched embankment structure standing 550 feet (170 m) high above the Santa Ana River and 650 feet (200 m) above its deepest foundations. The dam is 40 feet (12 m) wide at the crest and over 2,200 feet (670 m) wide at the base. Situated close to the San Andreas Fault, Seven Oaks is designed to withstand an 8.0 ML earthquake. The reservoir has a gross storage capacity of 145,600 acre-feet (0.1796 km3), with 113,600 acre-feet (0.1401 km3) reserved for flood control and the remainder for sediment accumulation. At full pool, the reservoir lies at an elevation of 2,604.4 feet (793.8 m) and has an area of 780 acres (320 ha). Water releases are controlled by a 1,623-foot (495 m) long tunnel outlet that runs through the base of the structure, and a 500-foot (150 m) wide ungated overflow spillway located just southeast of the dam. The dam controls runoff from an area of 176 square miles (460 km2) or 209 square miles (540 km2) including the drainage area of Baldwin Lake, which overflows into the Santa Ana River system during periods of heavy runoff.
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About this map
Name: Seven Oaks Dam topographic map, elevation, terrain.
Average elevation: 798 m
Minimum elevation: 549 m
Maximum elevation: 1,139 m
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