Aliso Creek (also Aliso Canyon Wash or Aliso Wash) is a major tributary of the Upper Los Angeles River in the Santa Susana Mountains in Los Angeles County and western San Fernando Valley in the City of Los Angeles, California.

[2] It is the second major tributary, after Browns Canyon Wash−Creek, to enter the Los Angeles River downstream of its headwaters at the confluence of Bell Creek and Arroyo Calabasas in Canoga Park.

After it passes under State Route 118 (Simi Valley Freeway) and enters Northridge, it empties into a retention basin and from there on is encased in a concrete flood control channel flowing southward across the San Fernando Valley.

In Reseda the Aliso Creek channel makes a 90-degree bend to the east, south of Vanowen Avenue and west of West Valley Park, flowing a short distance to its confluence with the Los Angeles River, north of Victory Boulevard between Wilbur Avenue and Reseda Boulevard.

[5] From the northern Santa Susana Mountains source to the southern mouth (year built in parentheses):