A new hydrology analysis led by Steve Margulis, professor of civil and environmental engineering at the UCLA Henry Samueli School of Engineering and Applied Science, indicates that the Sierra Nevada snowpack will likely take until 2019 to return to pre-drought levels. According to Margulis, the method used in this study may help regions like California to better understand the dynamics of their water supply systems.
Source: Sierra Nevada snowpack not likely to recover from drought until 2019 UCLA Newsroom, 23 June 2016
Additional coverage about Sierra Nevada snowpack levels:
UCLA researchers: Sierra snowpack will not return to pre-drought levels until at least 2019 East Bay Times, 15 Aug 2016
Blue Dot 19: The Sierra Nevada Snowpack North State Public Radio, 7 July 2016