The Santa Monica Bay watershed is a 414-square mile area of land that drains naturally into Santa Monica Bay. The watershed, is bordered on the north by the Santa Monica Mountains which stretch from the Los Angeles/Ventura County line east to Griffith Park. Santa Monica Bay is bordered on the west by Point Dume, Malibu and on the east by the Palos Verdes Peninsula.
Santa Monica Bay and its watershed provide habitats for more than 5,000 species of plants, fish, birds, mammals, and other wildlife. The Santa Monica Bay watershed is also home to more than 9 million people and is considered the second largest urban area in the United States .