(FresnoBee) - A massive plan to build new plumbing in the Sacramento-San Joaquin Delta, California's most important water supply, began trickling out Thursday as state officials released hundreds of pages of draft documents. Known as the Bay Delta Conservation Plan, the major features of the proposal are two giant tunnels to divert the Sacramento River underneath the estuary, and three new intakes along the river in Sacramento County. In addition, 145,000 acres of habitat would be restored to benefit 57 imperiled wildlife species, including chinook salmon and Delta smelt.