Isolated and integrated effects of sea level rise, seasonal runoff shifts, and annual runoff volume on California's largest water supply

► We separate the impacts of three climate change factors on water supply in California. ► We provide another approach to reduce uncertainties in the impact estimate. ► Annual runoff change is the most dominant factor in the middle of this century. ► Sea level rise becomes the most critical factor in the end of this century. ► Seasonal runoff shift will add to but not dominate climate change impact.