San Diego River

The San Diego River is a river in San Diego County, California. It originates in the Cuyamaca Mountains northwest of the town of Julian, then flows to the southwest until it reaches the El Capitan Reservoir, the largest reservoir in the river's watershed at 112,800 acre feet . Below El Capitan Dam, the river runs west through Santee and San Diego. While passing through Tierrasanta it goes through Mission Trails Regional Park, one of the largest urban parks in America. The river discharges into the Pacific Ocean near the entrance to Mission Bay, forming an estuary.

The river has changed its course several times in recorded history. When the first European settlers arrived in the late 18th century it emptied into False Bay, the present day Mission Bay. At some point in the 1820s it altered course and began to empty into San Diego Bay, which continued for nearly 50 years. Because of fears that the harbor would silt up, the river was diverted to its present course in 1877 by a dam and the straightening of the channel to the ocean.

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