Monday, April 19, 2021

"US West prepares for possible 1st water shortage declaration"

Have I mentioned that it is stupid to build cities in the desert?

From ABC News, April 17:

U.S. water officials are projecting the man-made lakes that store water used throughout the American West will fall to historically low levels and trigger an official shortage declaration for the first time

The U.S. Bureau of Reclamation released 24-month projections this week forecasting that less Colorado River water will cascade down from the Rocky Mountains through Lake Powell and Lake Mead and into the arid deserts of the U.S. Southwest and the Gulf of California. Water levels in the two lakes are expected to plummet low enough for the agency to declare an official shortage for the first time, threatening the supply of Colorado River water that growing cities and farms rely on.

It comes as climate change means less snowpack flows into the river and its tributaries, and hotter temperatures parch soil and cause more river water to evaporate as it streams through the drought-plagued American West.

The agency’s models project Lake Mead will fall below 1,075 feet (328 meters) for the first time in June 2021. That's the level that prompts a shortage declaration under agreements negotiated by seven states that rely on Colorado River water: Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming.

The April projections, however, will not have binding impact. Federal officials regularly issue long-term projections but use those released each August to make decisions about how to allocate river water. If projections don't improve by then, the Bureau of Reclamation will declare a Level 1 shortage condition. The cuts would be implemented in January.

Arizona, Nevada and Mexico have voluntarily given up water under a drought contingency plan for the river signed in 2019. A shortage declaration would subject the two U.S. states to their first mandatory reductions. Both rely on the Colorado River more than any other water source, and Arizona stands to lose roughly one-third of its supply....

....MUCH MORE

Some of the Western megadroughts have been hundreds of years long. As the San Jose Mercury-News depicted it in 2015:

https://www.mercurynews.com/wp-content/uploads/2016/08/20140127_031535_ssjm0126megadry90.jpg?w=1860

—San Jose Mercury-News "California drought: Past dry periods have lasted more than 200 years, scientists say"
That little red blip at the far right side of the timeline is the current drought.
You could make a reasonable argument that for the last 150 years Californians have been living in a fool's paradise.

From our 2008 post "A Black Swan in Food":

...Donald Coxe, chief strategist of Harris Investment Management and one of my favorite analysts, spoke at my recent Strategic Investment Conference. He shared a statistic that has given me pause for concern as I watch food prices shoot up all over the world.

North America has experienced great weather for the last 18 consecutive years, which, combined with other improvements in agriculture, has resulted in abundant crops. According to Don, you have to go back 800 years to find a period of such favorable weather for so long a time.  

Well we are now at 31 years of near-perfect weather for row crops.

Related:
A Short History Of Las Vegas And Water
I am one sick human being.
My first thought on seeing "The Las Vegas Land and Water Company" was to inquire whether the company had any outstanding bonds with weird covenants and/or gold backing. I kid you not. Obsessive, Moi?

And many, many more