OPINION: Is California’s Water Infrastructure Ready for Climate Whiplash?

If there is anything that might constitute an overwhelming institutional consensus in California, it’s that we are experiencing climate change, and that one of the consequences will be more rain, less snow, and more so-called whiplash between very wet years and very dry years.

In an average year these days, 30 million acre feet of water flows through the Sacramento-San Joaquin Delta. But nearly half of that water comes down in the form of a melting Sierra snowpack which in an average year holds 15 million acre feet of water. This snowmelt fills the reservoirs and feeds the rivers from April through June. With climate change, so we’re told, the volume of runoff won’t change. But we’ll get almost all of it in the three months of winter. Do we have a system to handle winter flows into the delta that are twice today’s volume?