This article discusses the complexities involved in the construction of the Grand Ethiopian Renaissance Dam (GERD) on the River Blue Nile in Ethiopia. It evaluates the parameters of complexity and provides a clear understanding of the issues created by different parties involved in the project. The article uses different tools to assess and manage the complexities and provides evidence through flow charts and diagrams. The involvement of different countries, political parties, and organizations makes the project more complicated. The article evaluates the parameters of complexity, including structural, technical, temporal, directional, transportation, political, social, and environmental. The article concludes by suggesting that the assessment done here will help the parties or the organizations involved with the construction of the dam to develop plans for early completion of the project by mitigating the political, structural, or directional complexities on time.