The Sierra Nevada snowpack provides roughly 60% of Southern California's water resources.

The Sierra Nevada snowpack is a vital water source for California. It supplies approximately 60% of Southern California's water needs. This snowmelt gradually releases water throughout the spring and summer, replenishing reservoirs and supporting agriculture, urban water supplies, and hydroelectric power generation. The health of the Sierra Nevada snowpack is crucial for California's water security, particularly in a state that faces significant water challenges, including droughts and increasing demands for water resources.