California needs more big storms to beat drought
Matt Weiser, The Sacramento Bee, 13 December 2014
Despite the heavy storm that hit California last week – complete with flooded creeks and mudslides, closed highways and downed trees – it will take a lot more of the same to end the drought. In fact, experts say it may take five or six more storms like it to consider the drought over.
One reason is that, as wet as the storm seemed on Thursday and Friday, it was not so stormy everywhere. California’s water supplies are largely reliant on mountain snowpack, and this was a warm “Pineapple Express” storm. The state’s reservoirs had capacity to collect nearly all the rainfall runoff that flowed in. But the storm did not deliver a great deal of snow to the Sierra Nevada, which provides the snowmelt that California relies on in summer and fall.
The state needs a lot more storms – and cold ones – to assure there’s enough snowmelt to meet water demand next summer. more