The Sacramento River Watershed (HUC 10290106) covers over 27,000 square miles and encompasses much of Northern California. Hydrologically, the watershed is fed by snowpack and precipitation from the surrounding mountains, which melt and flow into the Sacramento River and its tributaries. The snowpack in this region is particularly important, as it serves as a natural reservoir for the watershed's water supply. Surface water in the watershed is used for irrigation, municipal and industrial purposes, and also supports important fish and wildlife habitats. Reservoirs in the watershed provide additional water storage for agriculture, drinking water, and energy production. The region experiences hot, dry summers, and wet winters, where the majority of precipitation occurs. In recent years, the region has experienced prolonged droughts, with many reservoirs reaching historically low levels. Climate models predict a continuation of this trend, with longer dry periods and more intense rainfall events.