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San Joaquin Wash 
Summary
The San Joaquin Wash is a stream in Irvine, Orange County, California, and is a tributary of San Diego Creek. Its watershed includes part of the northern San Joaquin Hills, for which it is named. It flows west-northwest for about 6 miles (9.7 km) before joining San Diego Creek near University of California, Irvine.
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33°38′50″N 117°51′43″W / 33.64718929585033°N 117.86182022473122°W