The San Joaquin Delta Watershed covers a land area of approximately 16,000 square miles in central California. It is the largest watershed in California's Central Valley and is home to numerous rivers and streams that flow into the Sacramento-San Joaquin Delta. The hydrology of the delta watershed is heavily influenced by snowpack from the Sierra Nevada mountain range, which provides surface water for residential, agricultural, and industrial use throughout the region. The watershed is also characterized by several reservoirs, including the New Melones Reservoir and the Don Pedro Reservoir. In recent years, the region has experienced drought conditions, which have reduced snowpack and surface water availability. Additionally, the delta watershed is vulnerable to rising sea levels due to climate change, which could lead to increased flooding and erosion in the region.