The Ballona Wetlands are located in Southern California, United States south of Marina del Rey and east of Playa del Rey. The wetlands once included the areas now taken up by Marina del Rey, Venice, and Playa Vista, extending north to about present-day Washington Blvd. in Venice.It is one of the last significant wetlands areas in the Los Angeles basin, and is named for Port Ballona and Ballona Creek which now runs through the area as a flood control channel.