California's plumbing left out the living things: salmon blocked behind dams, the near-extinct Delta smelt caught in the pumps, and Native nations whose water rights were never honored. Then in 2024 four Klamath dams came down and salmon returned within weeks. The episode also covers the 18 treaties California tribes signed in 1851-52 that the Senate secretly refused to ratify, and the Winters doctrine that gives tribal water its seniority.
How decisive south-Delta pumping is for smelt and Delta salmon, compared with drought, warming, invasive clams and food-web collapse, is disputed. So is how fast and how far Klamath runs will rebuild.