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What are some geographical facts about Orange County, California?

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Quick Answer

Orange County, California has a land area of 4,060.87 square miles and a water area of 691.45 square miles -- a total of 4,752.32 square miles. The coastline is 42 miles long. The most common physical features are valleys (91 total), streams (33), summits (20), bays (19), capes (16), beaches (14), springs (13) and islands (10).

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Full Answer

Orange County is part of the Los Angeles-Long Beach-Anaheim metropolitan area. It was created in 1889 and named for the high number of oranges grown there. Its highest point is Santiago Peak, which is 5,687 feet above sea level. Its lowest point is sea level. The county includes part of the Cleveland National Forest. The largest body of water is Irvine Lake, with a water surface area of 660 acres. The lake was created in 1931 with the building of the Santiago Dam, and it was at that time an important source of water for local farms.

The longest river is the Santa Ana River, which is over 100 miles long and has 50 tributaries. It empties into the Pacific Ocean between Newport Beach and Huntington Beach. Originating in the north from the San Gabriel and San Bernardino Mountains, and in the east from the San Gorgonio and San Jacinto Mountains, it is Southern California's largest stream system.

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