This is the third installment in a trilogy on the hub of the state's water delivery system, the California Bay-Delta. It is the largest estuary in the West, located midway between San Francisco and Sacramento. The Delta is the lifeline for many varieties of fish. But after 150 years of human interference, the Delta is in trouble. Overfishing, dam building, logging and development have had a severe impact on the fish. Many California farmers are angling to save the fish that depend on Delta channels. They are responding to the environmental crisis by installing screens on water diversion pumps to protect the baby fish. The screens keep the baby fish away from the deadly pumps and allow the natural migration from Northern California rivers and streams through the Delta and out to the Pacific Ocean. An organization of governmental agencies called CALFED was formed to try and find some solutions to problems such as these in the Delta. They hope to have a decision on a master plan before 1999. The Water Education Foundation has detailed information on the California Bay-Delta and the CALFED process, which aims to bring it back to good health. You can visit their web site at www.water-ed.org. If you have comments or questions about this story, please E-mail us at calheart@kvie.org.