Man's influence on the hydrological cycle

Man's influence on the hydrological cycle

14a~er Research Vol I1. p. 127 Pergamon Press 1977. Printed in Greal Britain. MAN'S INFLUENCE ON THE HYDROLOGICAL CYCLE (A draft report of the UNESCO...

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14a~er Research Vol I1. p. 127 Pergamon Press 1977. Printed in Greal Britain.

MAN'S INFLUENCE ON THE HYDROLOGICAL CYCLE (A draft report of the UNESCO/FAO Working Group on the International Hydrological Decade) Water Resources and Development Service Land and Water Development Division

Food and Agriculture Organization of the United Nations: ROME 1973 (Price £1.80:$2.50 approx) AMOSG the activities of the International Hydrological Decade 1965-1975, launched by Unesco, was the creation of a number of working groups, made up of scientists of international reputation, which were to examine areas in hydrology of particular urgency and importance for mankind. The Working Group on the Influence of Man on the Hydrological Cycle was one of these groups. FAO has been responsible for providing the support and technical secretariat for this group. Its first report "Influence of Man on the Hydrological Cycle: guidelines to policies for the safe development of land and water resources" appeared in Status and Trends of Research in Hydrology 1965-1974, Unesco, Paris, was published in 1972. The group then decided that this report should be complemented by another having a different approach to the subject. The present work is the result. The key to this volume is the fact that man's efforts to control the world's water cycle invariably involve factors other than hydrology and engineering: ecological, sociological, economic, cultural and political considerations and forces. This may seem to be an obvious truth, but, like much common sense, it is all too often ignored in practice, with results that are sometimes very different from those intended by planners and technicians.

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