EnvironmentStudy: Nearly Half of Native California Salmon Could Be Extinct in 50 YearsMay 16, 2017 | Amy QuintonA new report that gauges the health of California's native salmon, steelhead and trout paints an alarming picture. It shows 45 percent are likely to be extinct in 50 years if present trends continue. Listen /Update RequiredTo play audio, update browser or Flash plugin.