ABSTRACT: More than 50 billion cubic cm ofthe river floods of our country are annually wasted of which the financial and human losses would amount to billions of Rls and tens of people while 90 percent of the country is confronted with shortage of water.Nowadays ecological changes, insufficient rainfall, limited and constant water supplies,economic development, industrialization of cities resulting in increasing demands for various necessities would provide a number of interrelated factors that illustrate water crisis in near future. Effective use of the existing water supply and attempts to access the new sources might be two temporary major solutions. Planning in order to collect rain water from the surfaces in urban areas (airport runways, streets, roads, and roofs) could supply reliable water sources in certain regions. Rain collection is one of the most prominent and applicable techniques of managing shortage of water. Proper consumption and distribution of water among different sectors, minimizing the risk of crisis, managing and maintaining water sources are among the advantages of this method.This study aims at getting acquainted with traditional methods in order to collect runoffs and managing effective use of rain water.
کلید واژگان :Key words: water crisis, effectiveness, surface flow system, collecting rain water, runoff
ارزش ریالی : 300000 ریال
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