Dams along the Mekong

http://www.nytimes.com/2009/12/18/world/asia/18mekong.html?scp=1&sq=mekong%20river&st=cse

The New York Times reports on the increasing trend in damming the Mekong River. Although in the US dam decommissioning has recently been a trend (opening up waterways for salmon in places like the Augusta on the Kennebec River in Maine, the Mekong faces more dams with the promise of hydroelectric power and short term flood control, but with the potential for damage to the environment and displacement. We've seen this elsewhere where damming for flood control is counterbalanced by the loss of natural sediment and silt distribution in flood plains making those areas flood less often, but with more devastating results.

"The most controversial aspects of the dams are their effects on migrating fish and on the rice-growing Mekong Delta in Vietnam, where half of that country’s food is grown. The delta depends on mineral-rich silt, which the Chinese dams are partly blocking. Experts say the new dams will block even more sediment and the many types of fish that travel great distances to spawn, damaging what the Mekong River Commission, an advisory body set up in 1995 by the governments of Cambodia, Laos, Thailand and Vietnam, estimates is a $2 billion fishing industry.

Of the hundreds of fish species in the river, 87 percent are migratory, according to a 2006 study.

“The fish will have nowhere to go,” said Kaew Suanpad, a 78-year-old farmer and fisherman in the village of Nagrasang, Laos, which sits above the river’s great Khone Falls.

“The dams are a very big issue for the 60 million people in the Mekong basin,” said Milton Osborne, visiting fellow at the Lowy Institute for International Policy in Sydney, Australia, and the author of several books on the Mekong. “People depend in very substantial ways on the bounty of the Mekong.”

Some analysts see the seeds of international conflict in the rush to dam the river. Civic groups in Thailand say they are frustrated that China does not seem to care how its dams affect the lives of people downstream."