Environmental issues in Kazakhstan at the Semipalatinsk nuclear testing facility (in fact a large zone south of Kourchatov (Курчатов)) and along the Chinese border. The Central Asian Regional Environmental Center is located in Kazakhstan, which fosters regional cooperation on environmental issues. Most of Kazakhstan’s water supply has been polluted by industrial and agricultural runoff and, in some places, radioactivity. The Aral Sea, which is shared with Uzbekistan, has shrunk to three separate bodies of water because of water drawdowns in its tributary rivers. A Soviet-era biological weapons site is a threat because it is located on a former island in the Aral Sea that
Rivers of New Zealand scenic rivers. Over half of the electricity generated in New Zealand is hydroelectric power. Hydroelectric power stations have been constructed on many rivers which dam the river completely, or channel a portion of the water through the power station. There is large hydroelectric power scheme in the North Island and in the South Island where water is diverted between rivers using a system of canals that is used to maximise the electricity generation. River conservation is threatened by pollution inflows from point and non-point sources. In the past rivers had been used for pollution discharges from factories and municipal sewerage