الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 103 |  |  |
| | | from | 103 | | |
Abstract
Sea water intrusion in Rosetta and Damietta Nile branches have been increased by several factors in the last decades as a result of anthropogenic activities. Excessive industrial activities in Rosetta and Damietta branches are the main origin of pollutants (e.g. El-Rahawy drain and industrial activities in Kafr El-Zayat city in Rosetta branch and fertilizer industries in Damietta branch). The purpose of this work is to describe how much sea water intrusion affects the water of Rosetta and Damietta branches. Along Rosetta and Damietta branches, the sea water intrusion is defined, where the sea water mixes with fresh water. Sea water intrusion is extended along Rosetta and Damietta branches at a distance greater than 19 km in Rosetta branch, while in Damietta branch it extended at a distance greater than 25 km. That occurred through analyzing twenty-six water samples collected from different sampling points selected along Rosetta and Damietta branches.
The study included evaluation of Physical, Chemical and biological parameters of water in the downstream area of Rosetta and Damietta branches; PH, Total Dissolved solids, Electrical Conductivity, Na+, K+, Mg2+, Ca2+, Cl-, SO42-, HCO3-,Revelle Index, Water Quality Index, Biological Oxygen Demand, Chemical Oxygen Demand, Total Count Bacteria, Total Coliform, Green Algae, Blue Green Algae, and Diatoms. Based on these measurements, water quality assessments, as well as, seawater contamination in Rosetta and Damietta branches were determined.