Tell-tale Signs (2002)

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    United Kingdom

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Considers the impact on the world's fresh water resources of climate change, and asks whether the current methods of managing water - in particular the damming of rivers - will be able to cope under ever more extreme weather patterns. Visits two climate change hotspots in India and southern Africa, where the tell-tale signs of a changing hydrological system are beginning to show: Orissa in India, which is prone to heatwaves, cyclones, droughts and flooding, and the Zambezi river. In Orissa, the Hirakud dam and canal projects built for large-stream irrigation downstream have left some areas waterlogged, and the entire catchment area above the dam has been deforested. The Kariba dam in Zambia and Zimbabwe and the Cahora Bassa dam in Mozambique have had a dramatic impact on local subsistence farmers, fisheries, and wetland habitats.

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