Eutrophication is one of the most important degradation of lakes. It has social, economical and political impacts. Thus, lakes remediation which is vital for the whole environment should also take into account these three aspects. This book present numerous remediation technics and also the controversial ones for sensitisation. Water quality modelling software is also addressed since it is a powerful tool for lake management; the WASP model gives a good illustration of this modelling approach. The book is closed with a case studied: The Municipal lake of Yaoundé.