Water

New operating rules for massive Delta systems will increase water deliveries to Southern California cities and some growers. Salmon numbers could drop, especially in dry years.

Growers and cities support the Newsom administration proposal, saying it strikes a balance for uses of Delta water. But environmentalists say the “healthy rivers” rules would actually harm California’s iconic salmon.

Most ships discharging ballast water into California waters are inspected, but state officials have tested the water of only 16 ships. Experts say invaders like mussels are inevitable under current rules and enforcement.

A lot is at stake with the new Trump administration: California’s water projects, its unique authority to clean its air, federal support for offshore wind and disaster aid for wildfires.

The golden mussel’s appearance in the Sacramento-San Joaquin Delta is its first confirmed detection in North America — and it has the potential to clog major water supply pumps.

Low counts of spawning salmon could mean another year without fishing. Experts say the outlook still has time to turn around.

Growers support a federal and state proposal for operating California’s massive systems that send river water south. But it could harm more salmon and other endangered fish.

Immigrants, tribes and other people of color rely on fish from San Francisco Bay and Delta rivers. California faces a federal discrimination probe for failing to protect them.

A judge slaps the state with an injunction, saying the water board overstepped its authority in Kings County: “There has been no review, analysis, or ability to challenge their conduct.”

Drinking water contamination is a chronic, insidious threat in California’s rural communities. Some have been waiting for clean water for years.