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From: Frank Krygowski <frkrygow@sbcglobal.net>
Newsgroups: rec.bicycles.tech
Subject: Re: Tariffs and bikes
Date: Sat, 12 Apr 2025 11:59:20 -0400
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On 4/12/2025 11:17 AM, AMuzi wrote:
> On 4/12/2025 10:09 AM, John B. wrote:
>> On Sat, 12 Apr 2025 09:02:45 -0500, AMuzi <am@yellowjersey.org> wrote:
>>
>>> Our total national hydroelectric power
>>> generation is lower than 60, 70 years ago. How does that
>>> make any sense?
>>
>>
>> Wasn't a dam broken down somewhere? Something about letting the fishes
>> swim, or some such thing.
>>
> 
> Ongoing disaster.  We're ripping them out, not building more and better 
> dams. See first chart here:
> 
> https://energycentral.com/c/ec/hydroelectric-generators-are-among- 
> united-states-oldest-power-plants

Dam removal doesn't necessarily have anything to do with hydroelectric 
power. Locally, the Mahoning River was a famously polluted industrial 
sewer. For about 100 years, miles and miles of steel mills and other 
factories lining the river used the water for process cooling, and 
discharged untreated waste directly into the river. Many of those 
factories had low head dams to ensure access to the water they used.

The mills are nearly all gone, but until very recently all the dams 
remained. They are being removed to allow the river to recover by 
flushing and dispersing heavily polluted sediment. Fish, birds and even 
kayakers and canoeists have returned to the river - although it's common 
to hear advice to not walk in the stream. In at least some places, if 
your feet sink too deeply in the sediment, they say you'll be standing 
in thick grease.


-- 
- Frank Krygowski