Tuesday, February 1, 2011

Wine Water Wars

With wine, comes the world of water.  In the 2 years that I've spent living in California, I've seen the issue of water become a series of arguments, picketing crowds, and harsh articles.  The truth is, in the driest of regions, such as California, water is needed as an irrigation base to keep the vines healthy through their growing season.  Although the hot, dry, non-humid summers keep the vines relatively disease-free, water is still needed to cool vines or enhance berry maturity. 

Napa Valley is actual desert terrain - in the summer, all grasses and shrubs die and all that is left is dirt.  In the wet winter months, although the vines lose their green vegetation, the grass and shrubs return.
(Photo from Google Images)

An interesting article was noted in yesterday's Press Democrat, which I believe is the Santa Rosa (northern California) newspaper.  I share it here for your convenience.  I like this article because it really shows the extent of how large the water problem is for the western U.S.  High populations, misguided use of water, and our nations largest reserve for fresh produce are all tearing away at a valuable resource.  But I would doubt that most of the nation realizes how closely this is tied to them.  Anyway, enjoy the article.  

(Click on the above link to be taken to the actual article.)


ECONOMIST: Drying of West brings new era of water wars

Evidence of a lengthy drought is visible above Lake Mead's water line behind Hoover Dam near Las Vegas.

Published: Sunday, January 30, 2011 at 3:00 a.m.
Last Modified: Friday, January 28, 2011 at 4:22 p.m.
Standing on the Hoover Dam, on the border between Arizona and Nevada, and looking upstream at Lake Mead, America's largest reservoir, the visitor notices a wide, white band ringing the cliffs. Nicknamed “the bathtub ring,” this discoloration comes from minerals that were once deposited on the volcanic rock by the Colorado River and have become visible as its level has dropped. It is one sign of a water crisis that threatens America's southwest.
Other reminders abound. Farther upstream, there are dry docks, jutting out ominously into desert, where boats were once moored. In one finger of Lake Mead, buildings that were abandoned in the 1930s, as the water of the newly dammed river rose and submerged them, have eerily begun reappearing, like a ghost town.
The main reason why Lake Mead, currently only 40 percent full, has been getting emptier is a decade-long drought. Whether this is a cyclical and normal event, or an early sign of climate change, is unclear. But even if the drought ends, most scientists think global warming will cause flows on the Colorado River to decrease by 10 percent to 30 percent in the next half-century, says Douglas Kenney, the director of a water policy program at the University of Colorado Law School.
The other reason, says Kenney, is the rapidly increasing demand for the river's water. The Colorado provides much or most of the water for many cities and farms in seven states — Colorado, Wyoming, Utah, New Mexico, Nevada, Arizona and California — before it peters out in the sands of Mexico.
In the northern states, its water supports cattle empires. In its southern stretch, especially in California's Imperial County, the river irrigates deserts to produce America's winter vegetables. And all along the way, aqueducts branch off to supply cities from Salt Lake City and Denver to Phoenix and Los Angeles. The metropolis closest to Lake Mead, Las Vegas, gets 90 percent of its water from this one source.
That is why Las Vegas is a canary in the mine shaft, as Pat Mulroy, the boss of the Southern Nevada Water Authority, puts it. The Las Vegas valley gets its water through two long channels drilled through the rock. The first taps the lake at 1,050 feet above sea level, the second at 1,000 feet. Lake Mead's water level is now near its record low, at 1,086 feet. Within a few years, it could leave Las Vegas' first intake, or even both, dry.
The threat to Sin City is a good example of the four dimensions — physical, legal, political and cultural — of water in the West. For the physical, the standard response is to summon the engineers. Mulroy already has them digging a third intake at 890 feet. Given the weight of the water on top, this is fiendishly difficult, and it will not be ready until 2014. Mulroy also wants to pipe ground water from the rural and wetter northern counties of Nevada to Las Vegas, but that has caused a vicious row.
Another response is to call in the lawyers. This was the preferred approach a century ago, in the era of the “water wars.” Starting with the Colorado River Compact of 1922 and continuing with statutes, a treaty with Mexico and case law until the 1960s, a truce was achieved. Called the Law of the River, the resulting regime determines who along the river has what right to how much water.
At least, it does in theory. The problem is that the law took shape after two decades of record water flows, which became the basis for allocation. As a result, it apportions more water than there is in the river. For decades that did not matter, since there were so few people. Then the cattle, fruit and people using the river multiplied.
The law's seniority rules theoretically mean that, for example, the taps to Las Vegas would be shut completely before a single lettuce grower in California's Imperial County lost a drop. This “idiocy of who gets cut first and second,” as Mulroy calls it, gives rise to the political dimension. These days, cooperation has supplemented, if not wholly replaced, the old rivalries among agricultural and urban users and among the seven states. Nevada and Arizona, for example, have a water banking partnership, whereby Arizona stores excess water in its aquifers so that Nevada could use it in a pinch. In California, the water utility of Los Angeles has bought water rights from farmers in Imperial County. But arguments persist.
The final dimension is the culture of the West. Does every middle-class house really need a lawn in a desert? Mulroy has already started paying Las Vegans to rip out their turf and opt for desert landscaping, which can be chic. Her own husband put up a fight but lost. So out went that lawn, too, just as the low-flow toilets and faucets came in.
From the Economist magazine.
 
Lake Berryessa Glory Hole - The hole used to fill in with water every year during the wet season. Today, the water table never reaches high enough to pour over the hole. Lake Berryessa is the main source of irrigation for Napa Valley.
(Photos from Google Images)

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