|Arroyo Calabasas ('Calabasas Creek')|
|• location||Calabasas, California|
|Los Angeles River, California|
|Basin size||Santa Monica Mountains, Simi Hills, southwest San Fernando Valley|
The stream begins with the merging of: Dry Canyon Creek from a Santa Monica Mountains watershed and McCoy Canyon Creek from a Simi Hills (Hidden Hills and Upper Las Virgenes Canyon Open Space Preserve) watershed, near the Leonis Adobe in the town of Calabasas.
Arroyo Calabasas flows northeast through Woodland Hills and Canoga Park. In Canoga Park it joins Bell Creek, directly east of Canoga Park High School beside Vanowen Avenue. The confluence marks the "headwaters" of the Los Angeles River, .
From mouth to source (year built in parentheses):