الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Egypt is exposed to serious water problem as the per capita share of water in Egypt is continuously declining; it is become below the water poverty limit that determined according to international standards with 1000 cubic meters/capita/year. One of projects of Ministry of water resources and irrigation (MWRI) to face this problem is the Irrigation improvement project (lIP) in the old lands to rationalize the water uses and achieve the optimum benefit.
The main objective of the present study is to study the hydraulic analysis of EL¬Mahmoudia canal which is considered one of the most important canals in the West. Delta. EI-Mahmoudia canal feeds Alexandria and EI-Behira governorates with drinking, industrial and irrigation water. It is expected to pass extra discharge in the canal during the next years to face the future demands for people.
Hydraulic analysis of EI-Mahmoudia canal at different operation conditions was studied by applying different expected discharges up to year 2017. The analysis includes velocities, bed shear stresses, and water levels. The stability of cross-sections of the canal at five reaches was also investigated under different operation conditions. Theses reaches were chosen at curved reaches. Different sections were selected in each reach. CCHE2D- Model used in this research to simulate flow and sediment transport in the studied canal for different discharges.
The results showed that most of velocities were within the acceptable range at canal sides. However, high velocities were observed along the canal centre line at some sections when extra discharges are permitted in the canal. It was also noticed that water levels were less than the embankment levels in most canal sections for the present discharge However, there were some critical sections, where the canal water levels were higher than the embankment levels and a danger of flooding is expecting at these sections when extra discharge are flowing in the canal up to year 2017. Shear stresses along canal wetted perimeter were higher than the allowable average shear stress at some sections. Erosion is expected when extra discharges were flowing up to year 2017. A protection of the canal side slopes and embankment is urgently needed at some sections to pass safely extra discharge in the canal