Western Harbour  of Alexandria, Egypt

Conclusions
The Concentrations of many heavy metals were several times higher compared to the analysis conducted a decade ago in sediment of Western Harbour (e.g. 4 times for Cd, 11 times for Cu, 8 times for Mn and 75 times for Zn). This large increase in heavy metal concentration in the surface sediment was likely caused by the ever-increasing port and industrial activities
during this period and continued discharge of agricultural and industrial effluents to the harbor. The higher levels of As, Cd, Cu, Mn, Ni, V, Sn, Cr, and Zn in the Arsenal Basin, and in the regions of the Boathouse, El Mahmoudiya outfall as well the Ship Lift, are mainly
due to the presence of major sources of metal pollution and intensive human activities. The concentrations of most heavy metals in the majority of the sediment samples were above the thresholds that were believed to be safe for living organisms. High levels of heavy metals could produce detrimental effects on benthic organisms.

the concentration of heavy metal increasing accumulated in internal habour than external it is related to Flushing time

 (renewal time of water in Harbour ) by slot in wave breaker 

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The sources of pollution are determine like oil spill, agriculture ( El Mahmoudiya canal ) and industrial activities and also the main paramters to transport as Wave ,wind Sea level ,current and fetch area those are most parameters with high impacts