We provide communities with the tools they need to reclaim their riverfront lands.

Dominguez Watershed

Today, the Dominguez Watershed is comprised of approximately 110 square miles of land in the southern portion of Los Angeles County; 96% of its total area is developed and the overall watershed land use is predominantly transportation. Rather than being defined by the natural topography of its drainage area, the Dominguez watershed boundary is defined by a complex network of storm drains and smaller flood control channels. The Dominguez Channel extends from the Los Angeles International Airport to the Los Angeles Harbor and drains large if not all portions of the cities of Inglewood, Hawthorne, El Segundo, Gardena, Lawndale, Redondo Beach, Torrance, Carson and Los Angeles. The remaining land areas within the watershed drain to several debris basins and lakes or directly to the Los Angeles and Long Beach Harbors. Considered individually, let alone as one unit, the harbors are among the world's busiest seaports. Considered by itself, the Port of Los Angeles is one of the top 10 busiest ports in the world.Historically, the area that now serves as the Los Angeles and Long Beach Harbors consisted of marshes and mudflats with a large marshy area, Dominguez Slough, to the north, and flow from the Los Angeles River entering where Dominguez Channel now drains. Near the beginning of the 20th century, channels were dredged, marshes were filled, wharves were constructed, the Los Angeles River was diverted, and a breakwater was constructed in order to allow deep draft ships to be directly offloaded and products swiftly moved. The Dominguez Slough was completely channelized in the mid 1900's in an effort to provide flood protection to much of the South Bay area. Eventually, two more breakwaters enclosed the greater San Pedro Bay and deep entrance channels were dredged to allow for entry of ships with need of 70 feet of clearance.