Quotulatiousness

May 1, 2015

Statistical myths in California’s water shortage

Filed under: Bureaucracy, Economics, Environment, Media, USA — Tags: , , — Nicholas @ 02:00

Devin Nunes debunks the common claim that California’s farmers use “80 percent” of the available water in the state:

As the San Joaquin Valley undergoes its third decade of government-induced water shortages, the media suddenly took notice of the California water crisis after Governor Jerry Brown announced statewide water restrictions. In much of the coverage, supposedly powerful farmers were blamed for contributing to the problem by using too much water.

“Agriculture consumes a staggering 80 percent of California’s developed water, even as it accounts for only 2 percent of the state’s gross domestic product,” exclaimed Daily Beast writer Mark Hertsgaard in a piece titled “How Growers Gamed California’s Drought.” That 80-percent statistic was repeated in a Sacramento Bee article titled, “California agriculture, largely spared in new water restrictions, wields huge clout,” and in an ABC News article titled “California’s Drought Plan Mostly Lays Off Agriculture, Oil Industries.” Likewise, the New York Times dutifully reported, “The [State Water Resources Control Board] signaled that it was also about to further restrict water supplies to the agriculture industry, which consumes 80 percent of the water used in the state.”

This is a textbook example of how the media perpetuates a false narrative based on a phony statistic. Farmers do not use 80 percent of California’s water. In reality, 50 percent of the water that is captured by the state’s dams, reservoirs, aqueducts, and other infrastructure is diverted for environmental causes. Farmers, in fact, use 40 percent of the water supply. Environmentalists have manufactured the 80 percent statistic by deliberately excluding environmental diversions from their calculations. Furthermore, in many years there are additional millions of acre-feet of water that are simply flushed into the ocean due to a lack of storage capacity — a situation partly explained by environmental groups’ opposition to new water-storage projects.

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