الفهرس 
Abstract
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Abstract
Egypt is an arid country with a limited water resources, rapid population growth and escalating living standard. It is a fact that agriculture is still considered the main economic activity as it consumes over 85% of the total water resources. Low efficiency and excessive usage of irrigation water has alerted sever problems, and caused harmful impact on soil and environment. In addition to water shortage, logging, fertility loss, and salinity are examples for the excess water hazard in lands. Reacting with this, particular techniques were needed to optimize water-use efficiency, and enhance distribution. Therefore, utilization of water models and computerization of water management became a necessity. Water management problems in Egypt could be summarized in the following items: old fixed distributing systems, approximated water duties, low responding of water managing mechanisms and the large gab between the planned crop patterning and the actual ones.