The Politics of California’s Water System
In a decision bursting with symbolism, the California State Water Resources Control Board recently announced its intention to draw down the main water supply reservoir for a half-million people who live just outside of the state capitol to only 12% of capacity by September 30. Lake Folsom on the American River — the main water source for Roseville, Folsom, and other Sacramento suburbs — will plummet to 120,000 acre-feet by that date, according to a forecast by the water board, which announced the plan at an unusually lively Sacramento workshop on June 24.
The artificial lake will therefore be only months away from turning into a dreaded “dead pool,” a state in which a reservoir becomes so low it cannot drain by gravity through a dam’s outlet. Such an outcome would leave area residents scrambling for water — if recent predictions of an El Niño weather pattern fizzle and rain fails to appear later in 2015. If that were to happen, then Folsom could be a harbinger for the rest of California.
Indeed, as the American West lurches through its fourth summer of an historic drought, numerous major reservoirs are at or near historic lows relative to the time of year. New Melones Reservoir on the Stanislaus River in Calaveras and Tuolumne counties, which was only 16% full as of last week, appears likely to meet the same fate as Folsom this year. A study by UC San Diego’s Scripps Institution of Oceanography in 2008, three before the current drought began, warned that the nation’s largest reservoir, Nevada’s Lake Mead (which supplies much of Southern California), has a 50-50 chance of running dry by 2021.
So far, a consensus of state and federal officials is that this state of emergency has come to pass due to a natural disaster beyond their control. Water board member Steven Moore has called the drought “our Hurricane Sandy.”
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