California is parched. Wells are running dry. Vegetable fields have been left fallow and lawns are dying. There must be some villain behind all this, right?
Of course there is. In fact, have your pick. As a public service, The Salt is bringing you several of the leading candidates. They have been nominated by widely respected national publications and interest groups.
There's just one problem: Not all of these shady characters live up to their nefarious job description. Let us explain.
Both Slate and Mother Jones have reported that almonds are sucking California dry. Each innocent-looking nut, we learn, robs the land of an entire gallon of water. All told, California's almonds consume three times more water than the entire city of Los Angeles. And their thirst is growing, year by year. California's farmers continue to convert new swaths of land to almond orchards.
Case closed? Maybe not, Grist retorts. Almonds get a lot of attention because production of them has been booming. And it's true that they do consume more water, per acre, than many other crops (though not all). Vineyards use much less water than almonds, and most vegetables also require less irrigation.
But that's only if you calculate water use in gallons per acre or gallons per pound of product. There's a different, and probably better, way to calculate water efficiency. How about water consumption per unit of value created? Gallons used per dollar of production, say. By that measure, almonds look just great, because they are so valuable.
So there's a very good argument that almonds are exactly what California's farmers should be growing with their precious water.
There is one problem with almonds, though. They're trees. They last for years, and they need water every single year, whether it's wet or dry. Farmers who've devoted their land to production of almonds (or walnuts and pistachios) can't easily adapt to water shortages. Letting the trees die would be a catastrophe, so they sometimes pay exorbitant prices or dig ever-deeper wells.
Water experts like Jay Lund, from the University of California, Davis, say that in the future, California should take care to maintain a healthy mix of trees and annual crops like vegetables. In drought years, farmers could then decide not to plant their tomato fields, freeing up water for their trees.
If you look at this presentation by Blaine Hanson, an irrigation expert also of UC-Davis, one thing jumps out. The agricultural product that truly dominates water use in California isn't almonds. It's alfalfa, plus "other forages," such as irrigated pasture and corn that's chopped into a cattle feed called silage. These forage crops consume more water per acre than almonds, and they also cover nearly twice as much land.
And where do those products go? Primarily, they feed California's enormous (though shrinking) herd of milk-producing cows.
Unlike almonds, forage crops don't bring particularly high prices. And they grow just fine in other places, too, such as the Midwest. So why should California sink its scarce water into such crops? It mainly results from the long tradition of dairy farming in the state.
But abandoning milk production would entail considerable economic dislocation. Also, these crops have remained viable because many farmers are guaranteed ample supplies of cheap water. Those in the Imperial Valley, a major alfalfa producer, get water from the Colorado River. Which leads us to ...
3. Laws and the politicians who make them.
Where to start? With the founding of the republic, maybe. When Europeans and other outsiders settled this continent, they operated under the basic rule of first-come, first-served. People who settled land got to claim it. And in much of the West, if they built a dam to irrigate their fields, they acquired a permanent legal right to that water. There were very few questions asked about how that water should be used, or what it should cost.
That basic idea remains in force, although the system for delivering water has been transformed by large, government-financed networks of aqueducts and canals. And hidden inside this legal framework are several characters that arouse strong suspicions.
4. Cheap water
For the most part, farmers don't have to outbid anyone for their water. They get it, or they don't, depending on the priority of their legal claim to it. Typically, they get that water for the cost of delivering it. This means that they don't have a pressing need to conserve that water, for instance, by switching into crops that make better, more economic, use of the water.
A limited market for water is now developing, which sets higher prices on water. It's driving farmers to treat their irrigation water more like the precious commodity that it really is.
5. Free water
This is the water that farmers pump from wells on their land. It's not exactly free, because it costs money to drill the well and pump the water, but farmers are legally free to use as much as they wish.
As a result, farmers have been racing to empty their aquifers, draining the water in them at an astounding rate. California has now adopted a plan which is supposed to eventually stop this, but it won't fully take effect for many years.
These are the villains of choice in parts of California's agricultural community. California's environmental authorities have stepped into the water allocation game, asserting that the state's endangered wildlife have rights to water that trump the claims even of the earliest settlers. As a result, in drought years, farms are getting less water — much less, in many cases, than state authorities originally promised to deliver. This is why some farmers complain, passionately, about a "man-made drought."
According to some reports, California's farmers are exporting vast amounts of water to places like China, adding to the state's water shortage. These are not literal water exports, but "virtual water" in products like alfalfa or almonds that took a lot of water to produce. Upon closer examination, though, this villain doesn't look quite so guilty. As Lund from UC Davis points out, alfalfa and almonds are the exceptions to the rule. If one counts all agricultural commodities, California imports far more virtual water than it exports. Its imports of corn, meat, lumber and cotton all required huge amounts of water.
Okay, time to pick one. Who's your drought-provoking villain of choice?
RACHEL MARTIN, HOST:
Maybe you've come across the following statistic recently in your reading about the California drought. It apparently takes one gallon of water to grow a single almond. And California grows a lot of almonds, along with many of the fruits and vegetables we eat in this country. So are we making the states drought worse by eating these foods? We brought in NPR's food and farming correspondent Dan Charles to help us sort it out. Hey, Dan.
DAN CHARLES, BYLINE: Happy to do your sorting for you.
MARTIN: Thank you. So let's talk about this. A gallon of water for a single almond? I mean, that's crazy. It seems crazy.
CHARLES: I am here to sooth your guilt, Rachel. There is nothing wrong with eating almonds. You should eat almonds.
MARTIN: (Laughter) Good.
CHARLES: They're good for you. Almonds get a lot of attention because California's farmers have been growing so many of them. They've been a hugely profitable crop, and production has been booming. And so yes, they take a lot of water. But those almonds replaced other crops, which also used a lot of water. And the simple fact is if you're growing any food, you're going to use a huge amount of water. Any crop you grow in California is going to take at least half a million gallons for every acre.
MARTIN: But so is there nothing to this? Are almonds thirstier than other crops, though?
CHARLES: OK, yes, they do take more water than a lot of other crops. Not all crops, but most crops - a lot more than vineyards, more than most vegetable crops. But that's per pound of production or per acre. There's another way to look at this. You could say how much water do they use per unit of value, let's say per dollar of output from that acre. And if you look at it that way, almonds are actually really good. Almonds are so valuable, that if you look at them per drop of water how much value do you create, they're right up there at the top. I should say that there is one real problem with almonds.
MARTIN: I knew it.
CHARLES: And that is they are trees. And trees stay in the ground year after year. And so when you plant an almond tree, you are locked into using that amount of water every year - wet year or dry year. So it's really not sensible for farmers in California to plant all their land in almonds. They need to set aside some of their land for crops where they can just decide year-by-year whether to plant them at all, like tomatoes for instance. So in years like this one when they know they don't have much water to work with, they leave that land fallow and just concentrate all other water on that valuable almond crop.
MARTIN: I mean, but in the reporting of the California draught, we have heard time and again that it's - the agriculture really requires so much water. Are there certain crops, Dan, that California farmers just should stop planting?
CHARLES: Yes. Yeah. Crops where the value does not justify using water on them. They should not be planting very much cotton or rice or hay. And that shift is actually happening. If you're looking for a villain, the villain is probably cheap water. There are farmers that are getting water for cheap, and they do not have much of an incentive to shift their land to the most valuable crops or to conserve water. Now, that is changing. It's changing slowly. It's changing gradually. But cheap water is getting more and more scarce.
MARTIN: So when we get big picture, I mean, is California still the place where the United States should be getting most of its food, or does the drought raise questions about whether or not we should move some of the crops?
CHARLES: We will be relying a little bit less on California in the future. I mean, California is, you know, in terms of water use, it's gone into debt. It has pumped out water from underground and depleted it's underground reservoirs. Those have to be built up. Some acres in California that have been producing food will come out of production in the coming years. And so we will get less food production from California. But most of the acres in California that are producing food, they will still grow food, and we'll be getting our strawberries, our nuts, our vegetables from California for many years to come.
MARTIN: And our almonds.
MARTIN: NPR's Dan Charles. Thanks so much, Dan.
CHARLES: Nice to be here. Transcript provided by NPR, Copyright NPR.