This book explores the current ecosystem status of tropical inland waters especially in Southeast Asia, the progress of ecosystem restoration in terms of current studies, technological interventions, policy recommendations, and stakeholder participation that gives due respect to traditional knowledge and cultural practices, and the challenges and opportunities of the restoration processes. The UN Decade on Ecosystem Restoration and the UN Environment Assembly’s Resolution on Sustainable Lake Management were the motive force in the publication of the book. Inland waters provide humans and a myriad of organisms with tremendous benefits. However, changing inland water environment due to external and internal pressures leads to unfortunate events such as water degradation, loss of biodiversity, and destruction of ecosystems with serious socio-economic consequences. This book serves as a good reference for students, academia, practitioners and other professionals, policy makers, and other stakeholders. The updated data and information on various aspects of ecosystem restoration, sustainable management, and utilization of inland waters contribute to understanding how ecosystem restoration of tropical inland water progresses in a changing environment. The book includes multidisciplinary and insightful information on tropical inland waters in line with the UN Decade of Ecosystem Restoration in 2021.