From post for Civicus World Assembly's Climate Justice track:
Hydroelectricity, like nuclear power, is seen by many as one of the answers to reducing carbon emissions. However, negative impacts on the environment such as deforestation and river systems degradation are almost inevitably accompanied by the destruction of local communities. China’s Three Gorges Dam is a contentious example.
Mitigation, conservation and development can clash head-on, sometimes disastrously. The Belo Monte dam is shaping up as a classic dilemma.
Brazil’s Belo Monte Dam: Classic Development Dilemma