California Gov. Gavin Newsom's $20 billion Delta tunnel project has cleared a significant hurdle, but it still has major obstacles to overcome. The plan aims to reroute water from the Sacramento River to a reservoir, addressing water supply issues in California. Delta communities oppose the project, fearing it will harm the environment and local farms. Last week, the Delta Stewardship Council voted to require the Department of Water Resources to address two challenges. Newsom hailed the decision as progress, but other obstacles loom. Court rulings have upended financing plans, state regulators have yet to weigh in on critical water rights decisions, and water agencies are still deciding whether the tunnel will be worth the cost.