Egyptian northern coastal lakes (Mariout or Mariut, Edku or Edko, Burullus or Borollus, and Manzala and Bardawil) could be a source of wealth for Egypt if the Egyptian and the concerning authorities intend, plan, and implement the necessary measures to keep the lakes sustainable. Therefore, this book The Egyptian Coastal Lakes in two volumes is produced by the Egyptian researchers and scientists to help and support those who are interested in these lakes. This volume consists of 6 parts divided into 13 chapters written by 10 authors and focuses on the characteristics and hydrodynamics of these lakes. The introduction of this volume I is presented in Part I which contains the chapter “An Overview of the Egyptian Northern Coastal Lakes”. This chapter presents basic information on the five northern coastal lakes, their origin, description, and the current development activities that were derived from problems from which the lakes are suffering. Part II of this volume consists of two chapters presenting the opportunities, challenges, and adaptive management of the lakes. The chapter titled “Land Use in Egypt’s Coastal Lakes: Opportunities and Challenges” shows that the lakes are promising zones in Egypt and could be of great importance to the Egyptian economy. It presents in some detail the challenges facing these lakes including shrinking, pollution, and climate change and how to face these challenges. In the chapter titled “Adaptive Management Zones of Egyptian Coastal Lakes”, the authors present the classification and evaluation of lakes. Also, the challenges facing the sustainable development of these lakes were identified. They presented how the adaptive management approach would facilitate the investigation and classification of the Egypt’s lakes and depressions.