81.  One kind of tunnel, called a karez, is the foundation of an ancient irrigation system used to channel underground water to settlements.

82.  Scientists hope to use the discovery to help find areas of underground water in remote regions.

83.  Such accidents commonly happen when miners hit an abandoned well or other underground water source.

84.  Suzhou, once known as the Venice of the East for its canals, will be barred from drawing from underground water.

85.  The Americans installed hand pumps that gave access to clean underground water, helping check an outbreak of cholera from ground water contaminated after the storm.

86.  The land sits above a large supply of underground water free of bacterial problems and relatively free of viral diseases, he said.

87.  The new report by the French Independent Research and Information Commission found that radiation was leaking into underground water, lagoons and the ocean.

88.  The rest use tanks that dump waste into canals and contaminate underground water.

89.  The proliferation of wells could dry up underground water sources in Bangladesh, India and Pakistan, it added.

90.  The rest use tanks which disgorge waste into canals and contaminate underground water.