Dam Industry

• March 2008 World Rivers Review
  

The central assumption governing the design and operation of all major water projects has just been declared dead by a group of leading water and climate scientists. Designers and builders of dams need take note.

The scientists, led by Paul Milly of the US Geological Service, explained in a recent article in Science that our dams, floodwalls and sewers have been designed and operated under the assumption of "stationarity" - that natural systems fluctuate within a defined set of extremes that can be estimated from past experience. But climate change means "stationarity is dead" for water resources planning, the scientists say.

• March 2008 World Rivers Review

India's ugliest dam builder is undoubtedly the state-owned National Hydroelectric Power Corporation (NHPC). While the company is currently angling to acquire new capital, its operations at home and abroad have left a trail of ruined livelihoods and misery in its wake.

The outcome of the World Summit on Sustainable Development will do nothing to halt the rapid degradation of the world's rivers and the impoverishment of the communities who directly depend on them. Rampant dam building, pollution, bad farming practices, channelization, deforestation, urban sprawl, and climate change are sickening the rivers of the world. The agreements made at the WSSD at best fail to rein in the forces destroying rivers, and at worst encourage them.

An emerging body of science indicates that reservoirs, especially in the tropics, are a significant source of global greenhouse gas pollution. The latest estimate, published in March 2007, is that methane from dams is responsible for around 4% of human-caused global warming.