Aliso Creek Watershed
The Aliso Creek Watershed covers 30.4 square miles and includes portions of the cities of
Aliso Viejo, Dana Point, Laguna Niguel, Laguna Woods, Laguna Beach, and Lake Forest. Its
main tributary, Aliso Creek, originates in the Santa Ana Mountains inside the boundaries
of Cleveland National Forest. Smaller tributaries include Wood Canyon, Sulphur Creek, the
Aliso Hills Channel, and English Channel.
A comprehensive watershed management study for the Aliso Creek Watershed
has been underway for several years. The U.S. Army Corps of Engineers completed the Reconnaissance
Report in February 1997. The Feasibility Study phase began in January of 1998 and a draft
of the final Feasibility Study report was circulated in November 2001.