The Social and Environmental Effects of Large Dams, Volume 2 |
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Page 11
... estimated that the area under irrigation was then in- creasing at an annual rate of 2.9 percent . By contrast , the amount of nonirrigated land coming into production was increasing at only 0.7 percent a year . 24 Writing in 1976 , Dr ...
... estimated that the area under irrigation was then in- creasing at an annual rate of 2.9 percent . By contrast , the amount of nonirrigated land coming into production was increasing at only 0.7 percent a year . 24 Writing in 1976 , Dr ...
Page 65
... estimated 3,000 square kilometers are infested with water weeds . Once established , water weeds are difficult , if not impossible , to eradicate . The Egyptian government has dosed its canals and irrigation drains with massive ...
... estimated 3,000 square kilometers are infested with water weeds . Once established , water weeds are difficult , if not impossible , to eradicate . The Egyptian government has dosed its canals and irrigation drains with massive ...
Page 272
... estimated net irrigation benefits for the dam at $ 3,610,000 annually , with costs at $ 1,987,000 . When Parry and Norgaard analyzed the figures , however , they pointed out : The Bureau of Reclamation predicted irrigation benefits for ...
... estimated net irrigation benefits for the dam at $ 3,610,000 annually , with costs at $ 1,987,000 . When Parry and Norgaard analyzed the figures , however , they pointed out : The Bureau of Reclamation predicted irrigation benefits for ...
Contents
BEFORE THE FLOOD | 17 |
AFTER THE FLOOD | 51 |
Management and MaintenancePerennial Problems | 163 |
Copyright | |
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acre-feet acres agricultural land Akawaio Arid Land Aswan Aswan Dam Aswan High Dam Barton Worthington benefits billion m³ Biswas Brazil Bruce Stokes building built canal Carl Widstrand caused Chagga construction cost crops cultivation cultural damage deforestation Developing Countries disease drainage earthquakes ecological economic Edward Goldsmith effects Egypt Environment Environmental estimated evaporation farmers farming feddans fertile fish flood control forest Goodland groundwater hectares High Dam hydroelectric Ibid increase India industrial inevitable irrigated land irrigation irrigation agriculture irrigation schemes irrigation system John Waterbury large dams large-scale water loss malaria ment meters million hectares Nile peasants percent perennial irrigation plans plants points pollution problem production qanats region reservoir resettlement result Rothé salinization salt schistosomiasis sedimentation seepage seismic silt social soil Sonjo Sri Lanka supply tanks Third World tion traditional irrigation Tucuruí Valley village water development schemes water projects waterlogging wildlife World Bank