c. 800B.C.
Gabrielino-Tongva Tribe settles along the Los Angeles River

Portola Expedition finds a “good sized, full flowing River,” lined with lush greenery.

Spanish colonists found El Pueblo de la Reina de los Angeles and build Zanja Madre to deliver water to the pueblo.

L.A. River is the sole water source for Los Angeles.

L.A. Aqueduct is completed to import water from the Owens River

Floods take 85 lives and cause $23 million in property damage.

U.S. Army Corps of Engineers builds a concrete channel for the River and major tributaries, and storm drains channel rainfall into the River.

Friends of the Los Angeles River founded by Lewis MacAdams

State Assemblyman proposes turning the River into a truck freeway. “Over our dead bodies,” FoLAR says and publicly builds revitalization momentum. First annual FoLAR River Clean-Up (La Gran Limpieza) draws 30 people.

Mayor Tom Bradley creates River Revitalization Task force

CA State Parks purchase two former industrial rail yards, the ‘Not-A-Cornfield’ site and Taylor Yard; battles to win the sites from developers mark a new approach to land use downtown and along the River.

La Gran Limpieza draws 3000 volunteers

City of L.A. adopts the L.A. River Revitalization Master Plan which designs a 32-mile greenway from Canoga Park through downtown L.A. to Vernon.


rrflood1941.jpg olympicblvdviaduct.jpg nsringst.jpg cesar-chavez.jpg

Seasonal River Floods Olympic Blvd. N. Spring Street Cesar Chavez Bridge

March 4,1941 1925 1929 1926
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Glendale-Hyperion Viaduct N. Spring Street Viaduct First Street viaduct

1929 1929 1929

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Arroyo Seco Fourth Street Viaduct N. Main Street Bridge

1913 1931 1910