One of the most critical impacts for California water management may be the projected reduction in the Sierra Nevada snowpack – California’s largest surface “reservoir.” Snowmelt currently provides an annual average of 15 million acre-feet of water, slowly released between April and July each year. Much of the state’s water infrastructure was designed to capture the slow spring runoff and deliver it during the drier summer and fall months. Based upon historical data and modeling, DWR projects that the Sierra snowpack will experience a 25 to 40 percent reduction from its historic average by 2050. Climate change is also anticipated to bring warmer storms that result in less snowfall at lower elevations, reducing the total snowpack.
it ain't gonna be a bowl of cherries. The linked white paper is interesting on many grounds