Scientific reports published over the past several years have been unambiguous. The delta, the largest estuary on the West Coast, is on the brink of collapse. Starved of freshwater inflow due to dams and water diversions, the Sacramento-San Joaquin River Delta’s health has faced a precipitous decline over the past few decades. The recently released Bay Delta Water Quality Control Plan offers our last best hope to revive the estuary that defines our region.