الفهرس 
AbstractOnly 14 pages are availabe for public view
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Abstract
There is no doubt that water is the lifeblood for human, animal and plant. The dry and arid areas covering nearlyone-third of the land area on the surface of the globe, while in the tate of Libya, the desert areas cover morethan 90 of its area. Therefore, theresearch focused on the study of the sources of water in desert areas. The sources are all types of groundwater, rain and water desalination and suggest its quantities hoping to cover the eeds of life. This has necessitated the yses the available of the previous studies and analysis of the implementation of the water projects identifying the sources of water. The study also includes the topography the climate, and distribution of the population. The thesis consists seven chaptersChapter one: It includes an introduction to the theme and objectives of the thesis. Chapter two: It includes summary of previous studies concerning the dry and arid lands. Chapter three: It includes a hydraulic study describing the dynamic movement of ground water and hydraulic laws which govern the process of withdrawal of groundwater by deep wells. Chapter four: It includes a detailed study of Libya in terms of terrain and population distribution and rate of increase, as well as the study of climate in terms of the distribution of wind, rain and heat. The section includes water needs at present and future. Chapter five: It includes a full description of the Great Man-Made River project, which depends on the extraction of groundwater from the desert and assembled in pipelines connected to the urban areas in the north of the country. Chapter six: The findings of the analysis of the study data field with suggestions for the future to increase the amount of water to keep pace with the increase in population and their needs in are presented. Controlling the withdrawal of groundwater and desalination of water and the distribution of water in proportion to the population distribution is suggested. Chapter seven: It includes the major findings and recommendations reached by the study. The findings include that it is essential to desalinate brackish water to be used in the oastal zone. Also the groundwater should be used mainly for the arid area for developments of the country. The solar energy is very important for saving the oil for export. The main conclusions of the study area presented. These conclusions are as follows: a)Most of the available ground water is coming from the upper basin of the Nile through the Nubian sand stone passing by Sudan and Chad. b)art of the ground water comes from the west due to the rain in Algeria and Tunisia. c)The rain on the coastal zone is not sufficient to fulfill the requirement for drinking, agriculture and development of the country.d)The need for desalination of sea and brackish water became a necessity.