Will the fifth time be the charm for California’s decades-long effort to replumb the Sacramento-San Joaquin Delta so that more Northern California water can be transported to Southern California?

Don’t count on it.

Last week, the state Department of Water Resources released a draft environmental impact report on the latest iteration of the 57-year-long effort to change the Delta’s role in water supply, a 45-mile-long tunnel officially named the “Delta Conveyance.”