The storms hitting California in February have left their mark on California’s largest and most important water reserve. Shasta Lake jumped 39 feet in elevation since February 1 and as of Tuesday it was at 85 percent of capacity and only 25 feet from its crest. Amid a wet winter, dramatic lake level rises have been common this year. Folsom Lake east of Sacramento rose 30 feet in January, while Lake Oroville shot up 75 feet in February.