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Melting glaciers may produce thousands of kilometers of new salmon habitat

science.org

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Re: Melting glaciers may produce thousands of kilometers of new salmon habitat

#22
post #3

So could opening up dammed rivers.

And how many more kilotons of fossil fuels would we need to burn per year to make up for the loss in hydroelectric power those dams give us?

Not as much energy as you think. The main obstacle to removing dams is getting funding. One dam locally is finally being removed 20 years after literally everyone local agreed it should be removed. 90% silted up as it is. But you have to pay for the unsafe bridge downstream before you cut open the dam. It sure would be nice to have had 20 years more sand on the beach to fight erosion.

Anyway, there are lots of little dams like this everywhere that have negative economic value, but no one wants to pay the cost to remove them.

Re: Melting glaciers may produce thousands of kilometers of new salmon habitat

#23
post #3

So could opening up dammed rivers.

And how many more kilotons of fossil fuels would we need to burn per year to make up for the loss in hydroelectric power those dams give us?

There are 84,000 dams in the United States. More than one a day since we became a country. Most of them don't generate any meaningful electricity, but they do disrupt habitat for many native fish species.

I would like to see them all destroyed. We can find electricity elsewhere.

Re: Melting glaciers may produce thousands of kilometers of new salmon habitat

#24

Earlier quoted context omitted.

And how many more kilotons of fossil fuels would we need to burn per year to make up for the loss in hydroelectric power those dams give us?

There are 84,000 dams in the United States. More than one a day since we became a country. Most of them don't generate any meaningful electricity, but they do disrupt habitat for many native fish species. I would like to see them all destroyed. We can find electricity elsewhere.

Yeah let’s let all of our precious water flow freely back into the ocean where it becomes saltwater. Without water life dies. But I guess at least the fish will live.

Re: Melting glaciers may produce thousands of kilometers of new salmon habitat

#25
post #3

So could opening up dammed rivers.

And how many more kilotons of fossil fuels would we need to burn per year to make up for the loss in hydroelectric power those dams give us?

I think you're imagining Hoover dam getting torn down, when really it is a 6' dam built 150 years ago with no hydroelectric that is causing problems for certain habitats.

Re: Melting glaciers may produce thousands of kilometers of new salmon habitat

#26
I think when trying to predict the future of climate change, you’ll find every model imperfect (even if it can tell you important truths about what may happen).

If you try to make specific predictions, you’re going to turn people off.

It’s far better to frame it as a matter of, “Look we don’t know what’ll happen and since we only have 1 planet and pollution is bad, we’re going to try and minimize the impact we have, because we don’t get a second chance.”

And then just take it from there.

We don’t need to understand what’s inside the box when it arrives on our doorstep. We just have to avoid opening it.

Re: Melting glaciers may produce thousands of kilometers of new salmon habitat

#27
post #22

Earlier quoted context omitted.

And how many more kilotons of fossil fuels would we need to burn per year to make up for the loss in hydroelectric power those dams give us?

Not as much energy as you think. The main obstacle to removing dams is getting funding. One dam locally is finally being removed 20 years after literally everyone local agreed it should be removed. 90% silted up as it is. But you have to pay for the unsafe bridge downstream before you cut open the dam. It sure would be nice to have had 20 years more sand on the beach to fight erosion. Anyway, there are lots of little…

Hm. Not so simple. In my province (BC), over 90% of our electricity is generated by dams on rivers.[1]

I agree with you that some dams are mostly negative. And all dams have some negatives. Witness our Site C dam project currently under construction.[2] It has been a political, environmental, legal, First Nations, and agricultural shitshow. I just think it's worth knowing that river dams still produce the vast majority of electricity for a lot of people on this part of the planet. I vote for change. Fingers crossed.

[1] https://www.cer-rec.gc.ca/en/data-analysis/energy-markets/pr...

[2] https://en.wikipedia.org/wiki/Site_C_dam

Re: Melting glaciers may produce thousands of kilometers of new salmon habitat

#29

Earlier quoted context omitted.

And how many more kilotons of fossil fuels would we need to burn per year to make up for the loss in hydroelectric power those dams give us?

There are 84,000 dams in the United States. More than one a day since we became a country. Most of them don't generate any meaningful electricity, but they do disrupt habitat for many native fish species. I would like to see them all destroyed. We can find electricity elsewhere.

electricity is not the only reason we dam rivers, millions of acres of agriculture is irrigated via damning and diverting rivers

Re: Melting glaciers may produce thousands of kilometers of new salmon habitat

#30

Earlier quoted context omitted.

There are 84,000 dams in the United States. More than one a day since we became a country. Most of them don't generate any meaningful electricity, but they do disrupt habitat for many native fish species. I would like to see them all destroyed. We can find electricity elsewhere.

electricity is not the only reason we dam rivers, millions of acres of agriculture is irrigated via damning and diverting rivers

And flood control
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