DAMS on the River Rh么ne in Switzerland are threatening to turn the
crystal waters of Lake Geneva into a deoxygenated, weed-covered dead zone, say
researchers at the University of Geneva.
Over the past forty years, engineers have built nine large hydroelectric dams
on the tributaries of the Upper Rh么ne, the main source of water for the
lake鈥攖he shoreline of which is known as the Swiss Riviera.
One result has been to disrupt the seasonal flow of the river. The dams
capture the peak summer flows from melting snow and glaciers, and release the
stored water through turbines…
