Author Topic: Drought in the Southwest: watch how Lake Mead has shrunk in recent decades  (Read 49047 times)

Brad

  • Inner Core
  • Hero Member
  • *
  • Posts: 4155
  • What, me worry?
    • View Profile
Las Vegas’s new strategy for tackling drought – banning ‘useless grass’

Quote
The ban targets what the Southern Nevada Water Authority calls “non-functional turf”. It applies to grass that virtually no one uses at office parks, street medians and the entrances to housing developments. It excludes single-family homes, parks and golf courses.

https://www.theguardian.com/us-news/2021/jun/07/las-vegas-drought-ban-useless-grass

ergophobe

  • Inner Core
  • Hero Member
  • *
  • Posts: 9295
    • View Profile
2021 is shaping up to be worse than 2015 and much, much worse than 2020.

This is bad (17 years of drought severity maps and other charts)...
https://www.nytimes.com/interactive/2021/06/11/climate/california-western-drought-map.html

Quote
Already, twice as many acres have burned in California as during the same period last year. The state’s fire season has expanded in recent decades, starting earlier and ending later than it used to. “Not everything is predictable,” said Dr. Swain of U.C.L.A., referring to events like the dry lightning strikes that ignited many major fires in 2020. “But of the predictable elements — how dry is the soil? And will it get better in the next months? — those are as bad as it can be.
« Last Edit: June 17, 2021, 05:25:59 AM by ergophobe »

Drastic

  • Need a bigger hammer...
  • Global Moderator
  • Hero Member
  • *****
  • Posts: 3087
  • Resident Redneck
    • View Profile

rcjordan

  • I'm consulting the authorities on the subject
  • Global Moderator
  • Hero Member
  • *****
  • Posts: 16358
  • Debbie says...
    • View Profile
WA: Officials say wild salmon runs on Tucannon River are in dire straits

https://www.spokesman.com/stories/2021/jun/17/officials-say-wild-salmon-runs-on-tucannon-river-a/

CA: Drought-hit California scales up plan to truck salmon to ocean

https://phys.org/news/2021-06-drought-hit-california-scales-truck-salmon.html

« Last Edit: June 17, 2021, 01:53:13 PM by rcjordan »

DrCool

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 877
  • I know you all want to know what I think
    • AOL Instant Messenger - drcool1973
    • View Profile
    • What Does Joe Think
    • Email
>WA

I don't have any data to back this up but based on what I am seeing they are really trying to keep as much water dammed up in the lakes and reservoirs as they can so there is irrigation water in the Columbia Basin this summer. One big lake up in Idaho we visited last weekend had the water level up 6-8 feet vs what it was about a month ago.

ergophobe

  • Inner Core
  • Hero Member
  • *
  • Posts: 9295
    • View Profile
>>truck salmon to ocean

Wow. Speechless.

>>earth-heat-imbalance-warming

Again... speechless.

>> water level up 6-8 feet vs what it was about a month ago.

That sounds right. At least in CA reservoirs should peak in July normally (though it appears not this year). Essentially, most of the runoff is May-June and the biggest irrigation needs are June-September, so that ideally yields a high point in July.
« Last Edit: June 17, 2021, 08:21:07 PM by ergophobe »

rcjordan

  • I'm consulting the authorities on the subject
  • Global Moderator
  • Hero Member
  • *****
  • Posts: 16358
  • Debbie says...
    • View Profile
Oroville water drop will force hydro-power plant offline

https://www.cnn.com/2021/06/17/us/california-drought-oroville-power/index.html

rcjordan

  • I'm consulting the authorities on the subject
  • Global Moderator
  • Hero Member
  • *****
  • Posts: 16358
  • Debbie says...
    • View Profile
"keeping the rows of powerful computers inside the data center from overheating will require up to 1.25 million gallons of water each day"

Drought-stricken communities push back against data centers

https://www.nbcnews.com/tech/internet/drought-stricken-communities-push-back-against-data-centers-n1271344

ergophobe

  • Inner Core
  • Hero Member
  • *
  • Posts: 9295
    • View Profile
Wow. I never thought about that. Thanks for posting.

Quote
exploring ways to incorporate circularity,

That was my first thought. I guess it's just a lot more expensive to capture the water and cool it back down (especially in Arizona).

rcjordan

  • I'm consulting the authorities on the subject
  • Global Moderator
  • Hero Member
  • *****
  • Posts: 16358
  • Debbie says...
    • View Profile
> capture the water and cool it back down

Wildly so.  All I can think of is cooling towers or many, many miles of deeply buried pipe in a closed loop.  I guess it could be pumped back into the aquifer, but what would be the long-term ramifications of slightly raising the ground water temperatures? Dunno.

But the water could be potable (though it might be salty). The 'mineral water' discharge of my geothermal heat pump is fine to drink, in fact we use it for daily coffee lately.  So pump it into retention ponds then over to city reservoirs?

rcjordan

  • I'm consulting the authorities on the subject
  • Global Moderator
  • Hero Member
  • *****
  • Posts: 16358
  • Debbie says...
    • View Profile

ergophobe

  • Inner Core
  • Hero Member
  • *
  • Posts: 9295
    • View Profile
>>AMZ

Thanks. Interesting read.

It seems that if San Diego can filter out feces, drugs, cleaning products, and make the water fit to drink, data centers could certainly treat their water and make it fit to recirculate as coolant.

One of the fundamental ideas in Marc Reisner's Cadillac Desert is that through most of the West, water is artificially cheap and that until it gets priced according to its actual cost, it makes sense to build a data center in the desert and let it use 1.25m gallons per day.

The book is old and there have been some positive changes. When it was written, many districts made it illegal to meter water. In other words, state law prohibited municipal districts from putting meters on houses or irrigation pipes. That's all past. In Fresno, as they rolled out meters sector by sector, they saw a 50% reduction in usage very quickly. But overall, I think most of what Reisner says holds up.


rcjordan

  • I'm consulting the authorities on the subject
  • Global Moderator
  • Hero Member
  • *****
  • Posts: 16358
  • Debbie says...
    • View Profile
‘We live in a desert. We have to act like it’: Las Vegas faces reality of drought

https://www.theguardian.com/us-news/2021/jul/09/las-vegas-climate-change-drought-water-conservation

ergophobe

  • Inner Core
  • Hero Member
  • *
  • Posts: 9295
    • View Profile
But we've heard that from Vegas for decades. To me the quote that sums up the situation is rather

Quote
“I had hoped I would’ve worked myself out of a job by now. But it looks like I will retire first.”

rcjordan

  • I'm consulting the authorities on the subject
  • Global Moderator
  • Hero Member
  • *****
  • Posts: 16358
  • Debbie says...
    • View Profile
"Las Vegas reached 117 degrees Fahrenheit (47 Celsius) to equal a mark also set in 1942, 2005, 2013 and 2017, and could hit that level again Sunday, according to the National Weather Service.

Readings reached 113F in Sacramento as heat continues to grip the western U.S. at least for a few more days"

Heat Scorches U.S. West as Records Fall Across the Region - BNN Bloomberg
https://www.bnnbloomberg.ca/heat-scorches-u-s-west-as-records-fall-across-the-region-1.1627640