The Sacramento-San Joaquin Delta is a vast estuary located in northern California, where the Sacramento River and San Joaquin River converge before flowing into San Francisco Bay. This region is characterized by a network of islands, waterways, and wetlands, making it a crucial habitat for various wildlife species. The Delta plays a significant role in California's water supply, providing irrigation for agriculture and drinking water for millions of residents. It is also a vital ecosystem, supporting fish, birds, and other wildlife, while facing challenges such as habitat loss and water quality issues.