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Topic: Weather, Climate, and Environment

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FearlessF

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Re: Weather, Climate, and Environment
« Reply #3766 on: November 21, 2020, 09:05:08 AM »
some think abandoned windmills are a problem to dismantle and dispose of

what's the cost of removing a dam?
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847badgerfan

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Re: Weather, Climate, and Environment
« Reply #3767 on: November 21, 2020, 09:07:49 AM »
Depends on the dam. What's it made of? To remove one, you have to build diversions. You can't have a failure during demo or you would cause a catastrophe. I've done a number of dam failure analyses during my career. I don't think there is a worse flood possible, except maybe a massive storm surge like we had with Katrina. 

But, that was man-made too, of course.
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Cincydawg

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Re: Weather, Climate, and Environment
« Reply #3768 on: November 21, 2020, 09:21:01 AM »
If it has a spillway, the water level could be lowered hopefully substantially over time and left open.  But the bottom of the spillway could be fairly high relative to dam height.

It's a dam problem.

I imagine removal is costly and no one has the funds.

847badgerfan

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Re: Weather, Climate, and Environment
« Reply #3769 on: November 21, 2020, 11:38:05 AM »
They all have spillways, but this one just overtops. A diversion would be necessary.

And then there is a lot of sediment behind the dam too, so finding a place to put that could be problematic. No doubt there is contamination.

There is nothing good about dams.
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Cincydawg

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Re: Weather, Climate, and Environment
« Reply #3770 on: November 21, 2020, 12:40:06 PM »
Some dams do confer some advantages.  Whether they outweigh the negatives is another story.


 

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