California's new Delta water plan faces criticism over ecosystem and supply risks

California's State Water Board unveiled a sweeping Bay-Delta management plan that aims to protect rivers, wildlife, tribal cultural uses and water reliability for nearly 30 million people. Core provisions require a 55% unimpaired-flow target on key Sacramento tributaries and a 40% target on the lower San Joaquin River during the spring months, alongside reservoir storage rules to preserve cold water for salmon. Water users may comply via one outlet regulation or an eight-year voluntary Healthy Rivers and Landscapes program that funds habitat restoration and water purchases, projected to support $2.9 billion in projects.

The plan also designates tribal tradition and culture as a protected water use for the first time. Opponents, such as Gary Bobker of Friends of the River, contend that the approach is doomed to fail, citing inadequate flow protections and reliance on voluntary measures. The board will gather public input until Sept. 18 and consider adoption at an Oct. 28-29 hearing.