Dams Harm Fish, Freshwater Ecosystems

The debate over what hydroelectric dams contribute to the environment -- either as useful tools in the fight against climate change or an impediment to migratory fish and freshwater ecosystem health -- is heating up in Maine as officials decide the future of one power-generating embankment.

Photo Insert: A hydroelectric dam

The proposed relicensing of a major dam on Maine's Kennebec River has officials and fishers, among others, once again wrestling with difficult questions about the environment and the future of the region's natural resources, Brooks Hays reported for United Press International (UPI).

To remain in good legal standing, Brookfield Renewable Partners needs new state and federal licenses for its Shawmut Dam in Farfield.

Earlier this year, the company withdrew its relicensing applications with Maine's Department of Environmental Protection and the Federal Energy Regulatory Commission after state regulators warned Brookfield that its water quality certificate was going to be denied.

According to Maine regulators, the dam, as it is being operated, is not sufficiently salmon-friendly.

Federal protections for the iconic fish, which first was listed as endangered in 2000, stipulate that 96% of salmon that approach each dam on the lower Kennebec must pass safely upstream within 48 hours, but state regulators told Brookfield they'll accept no less than a 99% success rate.

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