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WITH THE WORLD POPULATION DOUBLING EVERY FOUR DECADES, THE WATER RESOURCES OF THE WORLD ARE BECOMING ONE OF ITS MOST IMPORTANT ASSETS. WATER IS ESSENTIAL FOR HUMAN CONSUMPTION AND SANITATION, FOR THE PRODUCTION OF INDUSTRIAL GOODS, AND FOR THE PRODUCTION OF FOOD AND FIBER. WATER IS AN IMPORTANT MEANS OF TRANSPORT IN MANY PARTS OF THE WORLD AND A SIGNIFICANT FACTOR IN RECREATION. EVEN A VALUABLE RESOURCE CAN BE A HAZARD AND EXCESSIVE FLOODS CAUSE SUBSTANTIAL DAMAGE AND LOSS OF LIFE THROUGHOUT THE WORLD. WATER IS UNEQUALLY DISTRIBUTED ABOUT THE EARTH, AND ITS AVAILABILITY AT ANY PLACE VARIES WITH TIME. FINALLY, IN HIS USE OF THIS RESOURCE, MAN POLLUTES MUCH OF THE AVAILABLE FRESH WATER AND DEGRADES IT SO THAT IT IS UNFIT FOR MANY USES. SKILLED PLANNING AND MANAGEMENT ARE NECESSARY TO ACHIEVE THE LEVEL OF EFFICIENCY IN WATER USE WHICH WILL BE REQUIRED IN THE FUTURE. INVESTMENTS IN WATER-RESOURCES DEVELOPMENT ARE INFLUENCED BY ECONOMIC, SOCIAL, AND POLITICAL CONSIDERATIONS AS WELL AS THE BASIC ENGINEERING FACTS. THE FIRST FIVE CHAPTERS OF THIS VOLUME PRESENT THE SUBJECT OF HYDROLOGY. CHAPTER 6 DISCUSSES THE LEGAL ASPECTS OF WATER USE. CHAPTERS 7 THROUGH 12 DISCUSSES THE PHYSICAL WORKS UTILIZED IN ALMOST ALL TYPES OF WATER-RESOURCES PROJECTS. CHAPTER 13 REVIEWS THE IMPORTANT PRINCIPLES OF ENGINEERING ECONOMY BASIC TO WATER-MANAGEMENT. CHAPTERS 14 THROUGH 20 DISCUSS THE PRINCIPAL WATER USES IN MORE DETAIL AND THE FINAL CHAPTER SUMMARIZES THE PLANNING PROCEDURES FOR SINGLE AND MULTIPURPOSE PROJECTS
تحياتي Angelo
13-05-08, 02:00 PM
طلبـ صغـير !
رد: طلبـ صغـير !
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