الفهرس 
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Abstract
water transportation is considered the cheapest transport mode and having a less harm on the environment. In the River Nile, both passenger and freight traffic use the navigation channel between Cairo and Aswan
The analysis of queuing delays experienced by river traffic at locks presents a challenge because of the special features of lock operations.
The main purpose of the thesis is to conduct an analysis of single- chamber lock operations on the River Nile with the aim of estimating delay time. Queuing theory is introduced as the appropriate methodology for analysing delays at river locks. The basic assumptions of the theory are first introduced followed by estimations of the waiting time. Goodness of fit tests will be also discussed to investigate whether river traffic in the Nile follows the assumptions of random arrivals. A second methodology which will be used is Monte Carlo Simulation.
Results are compared with measured values at Assiut Barrage Lock as the case study.
The methodology is verified for accuracy and is used to estimate waiting time of vessels in the future and under several operational alternatives. It was found that the assumptions are realistic and follow the waiting line model represented by Poisson arrivals and negative exponential service time distributions. Monte Carlo simulations could not be used to estimate waiting times of vessels.
Accordingly a recommendation was made regarding the capacity of the existing infrastructure.
This thesis is organized in six chapters:-
Chapter 1 : Introduction .
Chapter 2 : Literature review.
Chapter 3 : Research methodology.
Chapter 4 : Analysis and Results .
Chapter 5 : Discussion.
Chapter 6 : Conclusions and recommendations .
In addition , a list of references and appendices presented Observations at A.B.L. & Isna B.L.