Environmentalist have filed a lawsuit after the federal government said last week that Northern California’s delta tunnels project would not harm endangered fish in the delta and bay. That decision gave the project a big boost. The state wants to build two huge tunnels that would take water from the Sacramento River, ship the water under the delta and send that river water to existing aqueducts that already send delta water south. Californians have been fighting over water for generations. Remember all the talk of a peripheral canal? The state eventually pulled the plug on that after lots of opposition.