Serrano Creek is a roughly tributary of

San Diego Creek San Diego Creek is a urban waterway flowing into Upper Newport Bay in Orange County, California, United States. Its watershed covers in parts of eight cities, including Irvine, Tustin, and Costa Mesa. From its headwaters in Laguna Woods the ...

in the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

. The creek starts in the

Santa Ana Mountains The Santa Ana Mountains are a short peninsular mountain range along the coast of Southern California in the United States. They extend for approximately southeast of the Los Angeles Basin largely along the border between Orange and Riversid ...

in a canyon in Whiting Ranch Wilderness Park, near the boundary of the

Cleveland National Forest Cleveland National Forest is a National forest (United States), U.S. national forest in Southern California that encompasses 460,000 acres/ of inland Montane ecosystems, montane regions. It is approximately 60 miles from the Pacific Ocean, withi ...

. It then flows southwest into the city of Lake Forest, running in a channelized course roughly parallel to Aliso Creek. It abruptly turns northwest then southwest at 90-degree angles as it enters a large

storm drain A storm drain, storm sewer (United Kingdom, U.S. and Canada), highway drain, surface water drain/sewer (United Kingdom), or stormwater drain (Australia and New Zealand) is infrastructure designed to drain excess rain and ground water from i ...

that takes it the rest of the way to the confluence with the

La Cañada Channel LA most frequently refers to Los Angeles, the second most populous city in the United States of America. La, LA, or L.A. may also refer to: Arts and entertainment Music *La (musical note), or A, the sixth note *"L.A.", a song by Elliott Smit ...

, creating the main stem of San Diego Creek.

References

Orange County, California articles needing infoboxes Rivers of Orange County, California Rivers of Southern California {{California-river-stub