Strategic planning always requests supporting tools to defeat lack of data problems, which is a common drawback in our planning system as a result of several reasons. This paper is an extensive overview of the recent application of Geographic Information Systems (GIS) in the domain of water contamination in lakes.  It is a trial to establish a GIS mapping technique, as an available technology, to support planners, and decision makers in their work. 

This mapping technique is presented in the form of tailored case study for Lake of Maryout in Alexandria city demonstrating various GIS analysis techniques/approaches applied to a diversity of real-life engineering endeavors in the water contamination control management sector in a lack of data system.

First, the reader is concisely acquainted with the major steps of utilized mapping technique and how they are conducted. Second, the technique would be applied to define degree of water pollution distribution in Lake of Maryout. Finally, the output maps would be analyzed to delineate a quick and long term strategy of solution.
