OPINION: California Can’t Save Fish By Diverting More Water From rivers

Recent decades have brought the slow collapse of the Sacramento-San Joaquin Delta and its salmon runs. A half dozen species face extinction. Lacking natural flushing, the Delta now suffers outbreaks of toxic algae. The salmon fishing industry suffered a shutdown in 2008 and 2009, which cost thousands of jobs. Science points to a clear cause: inadequate flows caused by excessive diversions. In some years, 90 percent of the Tuolumne River is diverted, leaving only 10 percent for salmon and the Bay-Delta. Every Central Valley salmon river also suffers from over diversion in many years.