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Mill Creek (pictured) is one of the main headwaters tributaries of the Santa Ana River. The Santa Ana River rises in the southern San Bernardino Mountains, at the confluence of two tiny streams, Heart Bar Creek and Coon Creek, at an elevation of 6,991 feet (2,131 m).
Its primary purpose is flood control and it is the downstream element of the Santa Ana River's flood control system, which is a natural constriction about 30.5 mi (49.1 km) upstream from the ocean. The area upstream from the dam contains 2,255 sq mi (5,840 km 2 ) of the watershed's 2,650 sq mi (6,900 km 2 ).
The city ranges from 2,350 to 2,550 metres (7,710 to 8,370 feet) above sea level. The dominant features of the city's geography are also the source of its name in Spanish: the four rivers of Cuenca (meaning a basin made by a confluence of rivers). These rivers are the Tomebamba (named after the Inca culture), Yanuncay, Tarqui and Machangara, in ...
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.
About 34 miles (55 km) long, it drains most of the northern Santa Ana Mountains and is a tributary to the Santa Ana River. It is one of the longest watercourses entirely within the county. [ 2 ] The creek shares its name with Santiago Peak , at 5,687 ft (1,733 m) the highest point in Orange County, on whose slopes its headwaters rise.
Map showing the main Orange County watersheds and watercourses. This is a list of rivers of Orange County, California, part of the Greater Los Angeles Area in Southern California.The Santa Ana River and San Gabriel River are the largest in Orange County; their extensive watersheds extend into neighboring Los Angeles, Riverside and San Bernardino Counties.
The reservoir has a capacity of 362,000 acre-feet (447,000,000 m 3) and is formed by Prado Dam on the Santa Ana River. The dam is composed of rock-fill and has a height of 106 feet (32 m) above the original streambed. It was built on the upper end of the Lower Santa Ana River Canyon, where there is a natural constriction in the river.
Santa Ana is the capital of the Yacuma Province and the Santa Ana del Yacuma Municipality, located at an elevation of 144 m above sea level, where the Yacuma River meets the Mamoré River. Santa Ana is located 150 Kilometer north-west of Trinidad, the department's capital. The city has an Airport, the Santa Ana del Yacuma Airport, which is ...