dam Archives – The Green Optimistic green tech news, since 2008 Fri, 17 Oct 2014 20:37:56 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 “Undo” – Elwha River Dams Removed, Salmon Run Free https://www.greenoptimistic.com/undo-elwha-river-dams-removed-salmon-run-free-20141017/ https://www.greenoptimistic.com/undo-elwha-river-dams-removed-salmon-run-free-20141017/#respond Fri, 17 Oct 2014 20:37:56 +0000 https://www.greenoptimistic.com/?p=49735 Just over one hundred years ago, a dam was constructed to provide power for local logging operations and residences, but cut off the upper section of the Elwha River in Washington. Constructed between 1910 and 1913, the Elwha dam effectively cut off five species of salmon, as well as other trout species, from their spawning […]

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]]> https://www.greenoptimistic.com/undo-elwha-river-dams-removed-salmon-run-free-20141017/feed/ 0 49735 Hydroelectric Dams Accounting for Huge Methane Gas Emissions, Researchers Find https://www.greenoptimistic.com/hydroelectric-dams-accounting-for-huge-methane-gas-emissions-researchers-find-20120808/ https://www.greenoptimistic.com/hydroelectric-dams-accounting-for-huge-methane-gas-emissions-researchers-find-20120808/#comments Wed, 08 Aug 2012 18:17:37 +0000 https://www.greenoptimistic.com/?p=25766 A team of researchers from the WSU (Washington State University) have discovered that dams with their water reservoirs, nowadays universally considered green energy resources, are actually contributing to the heating of the global climate. How? Read on. Methane, as it’s well-known, is 25 times more powerful than carbon dioxide when it comes to its greenhouse-causing […]

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