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The All Things Global Warming / Climate Change / Climate Disruption Thread


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#2441 LFC

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Posted 02 March 2020 - 02:02 PM

 D. C. Sessions, on 02 March 2020 - 01:01 PM, said:

Note that I restricted it to "fresh water."

That's what I was thinking of because Limerick Nuclear Power Plant isn't too far from my home, TMI is less than two hours away, I've seen plenty of non-nuclear plants built on large rivers in other places as well. I also remember the massive gull numbers in Ohio in winter because of the warm water attracting millions of gizzard shad that the gulls came to feed on. (How's that for tying my love of birding to an esoteric little piece of data about heated process water.)

Are there a lot of power plants using salt water? I thought the corrosiveness would bring up a whole host of problems though maybe they've figured out how to deal with them.

Interesting stuff on the evaporative cooling used by power plants in hot climates. Less water and more heat makes everything tougher. I wonder if the pipelines delivering it had been buried if the water waste would be lower.


I did a little digging and found this. When I saw the category of "irrigation" my first thought was ag but they mention other uses like lawns and (puke) golf courses ... like Trump's Bedford, NJ course that keeps taking more water than they're allowed but nothing ever seems to happen to stop it and fine them. They do mention that the "consumptive" (the word I was searching for) percentage of water use by power plants is pretty small. Bold is mine.

Quote

  • In 2015, total U.S. water use was approximately 322 billion gallons per day (Bgal/d), 87% of which was freshwater. Thermoelectric power (133 Bgal/d) and irrigation (118 Bgal/d) accounted for the largest withdrawals. Water for thermoelectric power is used to cool the steam that drives electric generators. Though 41% of daily water use is for power generation, only 3% of these withdrawals are consumptive. Irrigation includes water applied to agricultural crops along with the water used for landscaping, golf courses, parks, etc.
  • In 2015, California and Texas accounted for 16% of U.S. water withdrawals. These states along with Idaho, Florida, Arkansas, New York, Illinois, Colorado, North Carolina, Michigan, Montana, and Nebraska account for more than 50% of U.S. withdrawls. Florida, New York and Maryland accounted for 1/2 of saline water withdrawals.

So my guess is that if we're talking about consumptive use of water we can see that power uses very little and perhaps even a part of that is saline. That makes me think that agriculture is the single highest consumptive use of fresh water but again I'm not sure.
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#2442 AnBr

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Posted 02 March 2020 - 10:30 PM

 Bact PhD, on 02 March 2020 - 12:02 PM, said:

Not counting the current inter-state squabbles (FL/AL/GA; CO & points south & west)?

Actual shooting wars over H2O may well be within our children's lifetimes; I'm not so sure about within ours.

Don't forget that the Syrian civil war was in large part precipitated by sustained drought that made their agricultural system collapse and Assad being able to to little about it.
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