A plan to build two tunnels that would divert water from Sacramento to San Joaquin Valley farms poses a dire threat to salmon, according to a Bay Area salmon protection group.

The tunnels are the linchpin of the Bay Delta Conservation Plan (BDCP), a draft of the environmental impact assessment for which was released Tuesday by the California Department of Water Resources (DWR).

DWR is working, along with federal agencies and local water districts, to change the way California diverts Sacramento River water past its natural outflow through the San Francisco Bay to thirsty industrial farms and Southern California cities. And the result, which some are calling a rehash of Governor Jerry Brown's 1980s-era Peripheral Canal proposal, is raising hackles among environmentalists -- including one group concerned that the project could doom California salmon. 

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