This document summarizes the work of the Hydro and Agro Informatics Institute (HAII) in Thailand. It discusses HAII's vision of developing science and technology for agricultural and water resource management to cope with climate change. It describes HAII's research focuses on real-time monitoring, forecasting, modeling, and decision support systems. It provides examples of HAII's integrated modeling structures, telemetering systems, and use of high performance computing. Finally, it discusses how HAII aims to strengthen community water resource management and local economies through the application of science and technology following Thailand's King's sufficiency economy concept.