Calabasas Creek or Arroyo Calabasas is a seven mile long tributary of the Los Angeles River located in the western San Fernando Valley. The creek begins with the merging of Dry Canyon Creek from a Santa Monica Mountains watershed and McCoy Canyon Creek from a Simi Hills watershed near the Leonis Adobe in Calabasas.

The Calabasas Creek or Arroyo Calabasas flows northeast through Woodland Hills and Canoga Park. In Canoga Park, it joins Bell Creek. The confluence becomes the headwaters of the Los Angeles River. The area around the Calabasas Creek or Arroyo Calabasas was home to the Chumash Indians for thousands of years before the area was claimed by Spain and later by Mexico.

Southern California Watersheds

A watershed is an area of land that collects water whenever it rains or snows and from irrigation. Through gravity, water channeled into soils, groundwater, creeks, and lakes, drain into larger bodies of water and eventually to the ocean. Due to the large volume of storm water, it cannot be treated before it reaches the ocean. Since we all live in a watershed, we can all help in keeping our area free of harmful chemicals and other waste.