In what some call the most ambitious US river restoration ever, water will once again flow into the Lower Owens River.
At a dusty desert ceremony 235 miles north of the city Wednesday, Los Angeles Mayor Antonio Villaraigosa will close a century-long chapter on what may be the biggest water grab in the history of the American West.
Mr. Villaraigosa will push a button to send water flowing down a 62-mile stretch of rocky culverts and scrubland once known as the Lower Owens River. The move effectively turns the clock back to 1913, before city fathers diverted the water that flowed down from the Sierra-Nevada Mountains, and channeled it to Los Angeles. That diversion, orchestrated after years of backroom deals (chronicled in the 1974 classic, "Chinatown"), helped give rise to America's second-largest city. But it turned the mountain-ringed valley into a desert.
Now, several officials call the current effort the most ambitious river restoration ever attempted in the US.
It will create a flowing river through what is now dry land dotted only with tiny pools of runoff. The project comes after decades of animosity between northern and southern California that led to a 1970 court case and a 1997 promise by the Los Angeles Department of Water and Power (LADWP) to return the water by 2003.
After further stalls and fines, a mayoral administration wishing to turn over a new leaf acquiesced to the project.
"The significance of this cannot be overstated," says H. David Nahai, president of the Los Angeles Board of Water and Power Commissioners. "Inyo County gets 62 miles of desert reborn with fish, birds, wildlife, plants, and wetlands, and Los Angeles sees the end of decades of acrimony by doing the right, environmentally responsible thing."
Mr. Nahai says that because four new pumps will then return the redirected water to the L.A. aqueduct after its 62-mile journey, the project will barely affect L.A.'s water supply.