A demonstrator dressed as a bather protests against the rationing of water, outside the official residence of Sao Paulo's Governor Geraldo Alckmin in Sao Paulo, on Jan. 26. The banner behind him reads, "Planet Water, Dry Lives." Andre Penner/AP hide caption

itoggle caption Andre Penner/AP

The drought forced many citrus farmers near Orange Cove, Calif., to mulch their trees because they couldn't afford to keep them alive. Recent rain and new groundwater regulations have eased the crisis, but only slightly. Kirk Siegler/NPR hide caption

itoggle caption Kirk Siegler/NPR

The San Luis Reservoir in central California is the largest "off-channel" reservoir in the U.S. It is currently at less than 30 percent of its normal capacity. Kirk Siegler/NPR hide caption

itoggle caption Kirk Siegler/NPR

Thanks to unusually heavy monsoon rains, mesa land east of Ghost Ranch in New Mexico has erupted into vibrant green life — an unusual sight in this region. courtesy Harvey Day hide caption

itoggle caption courtesy Harvey Day

A sign over a highway in Glendale, Calif., warned motorists in February to save water in response to the state's severe drought. But a study released earlier this week showed residents in the southern coastal part of the state used more water this spring than they did last year. Robyn Beck/AFP/Getty Images hide caption

itoggle caption Robyn Beck/AFP/Getty Images

A fully formed coffee berry, left, is shown next to a damaged coffee berry due to drought, at a coffee farm in Santo Antonio do Jardim, Brazil on Feb. 6. Paulo Whitaker/Reuters/Landov hide caption

itoggle caption Paulo Whitaker/Reuters/Landov

There are about 2,000 dairy cows on Pete Olsen's fifth-generation farm in northern Nevada. A new milk processing plant is now putting pressure on Olsen and other dairy farmers to expand the size of their herds. But with the ongoing drought, farmers are struggling to get enough feed for the cows they already have. Kirk Siegler/NPR hide caption

itoggle caption Kirk Siegler/NPR

Raindrops on a windshield blurred the view of a woman Wednesday in San Francisco. California, which is suffering through a drought, is getting some much-needed precipitation this week. Ben Margot/AP hide caption

itoggle caption Ben Margot/AP

Gov. Jerry Brown holds a chart showing California's average precipitation as he declares a drought state of emergency for the state Friday. Brown asked residents to voluntarily reduce water usage by 20 percent. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

By this time last year, 26 percent of the country's corn crop was already planted. A wet, cold spring means that only 4 percent is in the ground right now. Seth Perlman/AP hide caption

itoggle caption Seth Perlman/AP