A powerful series of atmospheric rivers has delivered a major boost to Northern California’s reservoirs, with several lakes rising rapidly over just a few days as heavy rain and runoff poured into watersheds across the region.
A massive jump came at Lake Shasta, where water levels climbed 16 feet in six days, rising from just over 994 feet on Dec. 19 to 1,010 feet by Dec. 25, according to the California Department of Water Resources. The reservoir is now 64% full, about 11% above its historical average for late December…