Delta Tunnel Inches Forward

Proponents of a huge water project are claiming victory after the $20 billion tunnel largely cleared a key hurdle last week. But the massive construction — known as the Delta tunnel — is still mired in controversy, and many roadblocks lay ahead, writes CalMatters’ Rachel Becker.

To shore up state water supplies, the Delta tunnel aims to divert more water from Northern California — while bypassing the Sacramento-San Joaquin Delta — and deliver water to roughly 30 million people living mostly in Southern California, as well as farmland.