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Aerial view of the Santa Ana River and the 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.
English: Santa Ana River (lower center), Seven Oaks Dam (on the Santa Ana River), Mill Creek (behind the Santa Ana and converging with it), and Slide Peak (foreground) Date 18 September 2019, 15:02:37
Along the main stem, this zone begins at the base of Seven Oaks Dam and ends at the Lytle Creek confluence. [32] This segment of the Santa Ana River just downstream of Seven Oaks Dam marks the beginning of the inland riparian zone. Historically, the Santa Ana was named "the best stream in Southern California [for steelhead trout habitat]". [40]
In all, the six official dams of the Highland Lakes have a hydroelectric power production capacity of 295MW, with Mansfield Dam alone able to provide 108MW. While Longhorn Dam has no hydroelectric production capacity, Lady Bird Lake served as a cooling pond for the 100MW Seaholm Power Plant and the 550MW Holly Street Power Plant until they were ...
Downstream of the dam it receives Siberia Creek from the left, and plunges suddenly into a steep and narrow canyon, and empties into the Santa Ana River just upstream of Seven Oaks Dam, which in wet years, impounds water on the Santa Ana River past the Bear Creek confluence.
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The reservoir is formed by Seven Oaks Dam, which was completed in 1999. The United States Army Corps of Engineers built the zoned earth-and-rock-fill dam at the foot of the San Bernardino Mountains to protect against flooding in the eastern portion of the Greater Los Angeles Area. Its maximum height is 550 feet (170 m) above the pre-existing ...
The 106-acre and roughly 40-foot deep reservoir — which typically holds more than one billion gallons of water — is supplied from upstate reservoirs, which have dropped below their own normal ...