RESERVOIRS: PROS AND CONS
Abstract
Social and water problems are one of the greatest challenges facing humanity today. The total amount of water on Earth is measured by a huge number – 1386 million km3 but, unfortunately, only 2.5% of it is fresh water which is necessary for human life on Earth. River waters used for various needs account for only 0.0002% of the total. On most rivers in the world, more than 60%, and on a number of rivers in arid zones, over 90% of the annual runoff occurs during the flood period, i.e. only 2-3 months. Economic activities cause pollution of rivers and lakes - their water quality deteriorates causing adverse effects to aquatic life.
References
2. Mishon V.M. Poverhnostnye vody Zemli. Voronezh, Izd-vo Voronezhskogo universiteta, 1996.
3. Celesoobraznost i vozmozhnost izmeneniya otmetki NPU Rybinskogo vodohranilisha. Vybor optimalnoj otmetki NPU. (TEO). Svodnaya zapiska. Kniga 1. Moskva, 2001.
4. Hublaryan M.G. Vodnye resursy: racionalnoe ispolzovanie i ohrana. M.: Znanie, 1990.
5. Shklomanov V.M. Antropogennye izmeneniya vodnosti rek. L.: Gidrometeoizdat, 1979.
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