The number of small hydropower projects in the U.S. is increasing as utilities try to avoid concerns about the environmental impact of large dams, the Wall Street Journal reports.

The Federal Energy Regulatory Commission now has applications for 14,000 megawatts of hydropower projects — enough to power 7 million to 14 million homes — and most are located on small rivers, streams, and creeks. That figure is a 20 percent increase from two years ago.

As the number of projects grows in states such as Washington, Colorado, and Montana, environmentalists are beginning to raise objections to the small dams, which critics say can still block fish runs, interfere with whitewater rafting trips, and carve up wilderness habitat with roads, power lines, and other infrastructure.

“One plant here, one plant there, maybe we would support that,” said an official at American Whitewater, a rafters’ group. “But with so many… this really gets to be an issue of cumulative impacts.”

Utilities argue that the smaller dams often have minimal environmental impact and, most importantly, emit no greenhouse gases.

Appearing courtesy of Yale Environment 360.

[photo credit: Flickr]

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The Turkish government will revive a $1.6 billion dam project on the Tigris River despite concerns that it will displace tens of thousands of people, damage wildlife habitat, and destroy historic archaeological sites.

Preparations for the Ilisu hydroelectric dam were suspended for six months after financial institutions in Germany, Switzerland, and Austria announced that they were withholding financial support because of environmental concerns.

But Veysel Eroglu, Turkey’s environmental minister, said the financing would be made available for what the government considers an important part of a $32 billion plan to boost the economy in the nation’s southeastern corner, a region disrupted by armed conflict between the government and the outlawed Kurdistan Workers Party. Eroglu said improvements have been made to assure the project will meet international standards.

Turkish officials say the dam, part of a larger proposed network of dams called the Southeastern Anatolia Project, would generate 1,200 MW of electricity after it is completed in 2013. But environmental advocates warn that the project would inundate as many as 80 towns, villages, and hamlets, and displace up to 80,000 people.

This article originally appeared on Yale Environment 360 at http://e360.yale.edu

[photo credit: Kel Patolog]

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