Damming doesn't hurt salmon? Something is fishy, scientists say.

Darkfrog submitted, created time 2 months 1 week (www.nature.com)

Damming rivers is an environmental conundrum. On the one hand, hydroelectric power provides clean, relatively reliable energy. On the other, damming rivers can endanger fish populations ...or can it? A recent study performed on the dammed Columbia River and undammed Fraser River suggests that perhaps the smolts are all right.

Salmon travel the rivers at two points in their lives: first, they must find their way downriver to the ocean as smolts (juveniles) and second, they must find their way back upstream to the spawning grounds in the last stage of their lives

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Pesticide Brew Spells Trouble for Salmon

Wild Salmon Not in the Pink

Air quality vs. water quality: Should the dams stay or go?

Darkfrog submitted, created time 1 year 8 months (www.nytimes.com)

Evironmentalists are taking sides on the issue of hydroelectric dams on Oregon's Klamath river. Those in favor say that the dams provide clean, renewable energy. Those against cite dwindling salmon and other fish populations and the consequences for commercial and American Indian fishermen.

Building fish ladders over all four of the river's dams would cost $300 million. Whether the dams are removed or the ladders are built, the price of energy in Oregon will go up

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