Bangkok, located in the Chao Phraya Delta, is called the City of 3 Waters, as it is influenced by the water from the north, the rainwater, and the tidal water influenced by the Gulf of Thailand. We have a long history of living with water that can be traced back to at least the Ayutthaya period. Water is a part of life as a food source, in agriculture, and as a mode of transportation for people. However, after the rapid economic and industrial development, the relationship between people and water has changed. Urbanization supersedes lands for agriculture. Cars replace boats and ships. Many canals have been converted into streets, while the remaining ones lack maintenance. These canals have garbage piled up and have decreased their capacity of ecological service more than ever before. Bangkok and other provinces in the Lower Chao Phraya Basin have encountered repetitive flooding. Meanwhile, agriculture has faced extreme droughts. Apart from these threats, climate change is intensifying. Today's solutions are siloed among different agencies. Thus, it is urgent to have a platform and discussion that lead to integrated and effective solutions