Water – Page 2 – Lone Candle

You — yes, you — are going to pay for the century-old mistake that’s draining the Colorado River

Posted on May 5, 2023 by Lone Candle

“More than 100 years ago, the US government encouraged Americans to populate rural areas like this, build infrastructure, and farm more land, according to Sarah Porter, director of the Kyl Center for Water Policy at Arizona State University. That’s when engineers started building canals to take water from the Colorado River. At the time, the US policy was “to try to get every acre of land under the plow,” Porter said.

These canals turned the desert into a produce powerhouse. When farmland in Iowa or Nebraska is frozen and blanketed in a thick layer of snow, it’s 70 degrees and sunny in the Imperial Valley and Yuma. As soon as there was enough water in the mix, the conditions were ideal for growing crops year-round.

oday, the Imperial Valley, Coachella Valley, and Yuma together use close to 4 million acre-feet of water per year. That’s an enormous amount, equal to roughly a third of the entire flow of the river. (An acre-foot fills one acre of land with one foot of water and is roughly what two average houses use each year.)”

…

“In determining the share each basin would get, water officials ignored inconvenient science and massively overestimated the river’s average flow. Western water users each got a piece of the river, but — together with water later allocated to Mexico through a treaty — those pieces turned out to be more than what it can offer in a typical year. (The 1922 decision also failed to spell out what shares would be given to the 30 or so tribal nations in the basin.)”

…

“water officials didn’t factor in the possibility of a changing climate. Decades of recent warming have been drying out the West, causing less water to flow into the river.”

…

“Conserving water obviously sounds like a great idea. The problem is that farmers in these regions are already highly efficient. Water-saving technologies are also pricey, and farmers I spoke to are concerned that any future payments won’t be enough to cover them.”

…

“I’ve spent the last few weeks searching for a good solution to the crisis, an end to this story. No source I found could offer one. Any effort to restore the river will mean some people (or animals) get less water, barring several more winters like this one. And there’s no way around that, no secret technology to grow food without water. “It’s just such a complicated, ugly problem,” Schwabe said.
It’s an unsatisfying conclusion. Then again, maybe that’s what climate change creates: ugly problems where everybody loses. The best thing we can do, perhaps, is to sober up to this reality — that climate change will reshape economies and human lives — and use that knowledge to prepare.

Scientists have known for decades that the Colorado River is over-allocated and that warming is drying out the basin. Yet water regulators have failed to act in a meaningful way to rebuild Lake Powell and Lake Mead, Schwabe said. They should have started overhauling the Law of the River years ago, he said, instead of always being in “crisis mode.”

“The longer you wait to act, the more drastic your action has to be,” Schwabe said. “If we had started making these cutbacks in the ’80s and ’90s, in incremental steps, we probably wouldn’t be talking about this today. The situation is dire because we failed to act previously.””

Why This Circle Could Spark Africa’s Biggest War

Posted on April 18, 2023 by Lone Candle

Shrinking Colorado River hands Biden his first climate brawl

Posted on February 18, 2023 by Lone Candle

“At issue is whether it’s fair to use century-old rules, created during an era of relative abundance, to ration water from the rapidly shriveling river now that the West is on the precipice of climate disaster. With California and its six neighbors locked in a dispute over two competing approaches to divvying up the cuts in water deliveries, whatever the administration decides will almost certainly end up in court.”

…

“The current feud centers on California, a longtime Democratic stronghold, and Arizona, a newfound swing state that has proven crucial to the party’s control of the White House and Senate.
The 1,450-mile long Colorado River made much of the West inhabitable, and now supplies water to 40 million Americans from Wyoming to the border with Mexico, as well as an enormously productive agricultural industry. But climate change has shriveled its flows by 20 percent over the past two decades, and for each additional degree of warming, scientists predict the river will shrink another 9 percent.

Water levels at the system’s two main reservoirs are falling so fast, the Interior Department has said that water users must cut consumption by as much as a third of the river’s flows or risk a collapse that could cripple their ability to deliver water out of those dams. That would also cut off hydropower production that is crucial to the stability of the Western grid.

The states broadly agree that the vast majority of those immediate cuts must be made by the Lower Basin states of Arizona, California and Nevada, whose decades of overuse have accelerated the crisis. But the fight is over whether California, which holds strong legal rights to the lion’s share of the Lower Basin’s water, should have to share in those reductions.”

How are floods and droughts happening at the same time?

Posted on October 14, 2022 by Lone Candle

“The short answer for why these seemingly opposite things are happening at once is that climate change is making our atmosphere thirstier. Or, in more scientific terms, as the Earth warms, its atmosphere can hold more water vapor. This happens at an exponential rate: The back-of-the-napkin math is that the atmosphere can store about 7 percent more water per degree Celsius of warming, and we’re currently at about 1.2°C above pre-industrial temperatures. The result is an atmosphere that takes longer to get saturated with water, which means fewer rainstorms, but when they do occur, those storms dump more water at once, resulting in floods.

Paradoxically, our changing atmosphere is also a perfect recipe for drought. Higher temperatures mean water evaporates faster, and when it falls, it’s less likely to fall as the snow that has historically fed many of the American West’s rivers and streams. The rain isn’t very helpful either, since lifting a drought requires a combination of snowfall and long, sustained rainy seasons instead of short, extreme bursts.

“Water infrastructure in the West is built around snowpack,” said Noah Diffenbaugh, a climate scientist at Stanford University. “It doesn’t need to be stored in a reservoir if it’s being stored in the snowpack.” Reservoirs have limited capacity, Diffenbaugh pointed out, so if an extreme rainstorm filled a reservoir beyond capacity, that water — which otherwise might have fallen as snow, or over a longer period of time — would have to be released.

Instead, we see a vicious cycle: As the soil and vegetation in drought-prone regions dry up, they become prone to wildfires and less able to retain water, so when extreme rainstorms roll in, they trigger floods and erosion. The heat makes the water dry up before it has any particular impact on the drought, and the erosion makes the soil even less able to retain water, so the next flood becomes ever so slightly worse. We saw this kind of mid-drought flooding just a week before the floods in the Midwest, when monsoon rains swept through Flagstaff, Arizona.”