An urban delta may be defined as a city home to as many as half a billion people living and working in a deltaic zone where rivers meet the ocean. These communities are coastal, riparian, & urban which are threatened by increasingly strong typhoons, hurricanes, uneven rainfall patterns with droughts .
According to New America, the 3 major global trends are climate change, rural to urban migration, and urban economic concentration. The Delta Coalition is the world’s first international coalition of governments joining forces to share knowledge, innovation and sustainability practices to create more resilient urban deltas .
Policy makers, politicians, NGOs, academics, engineers, designers and consultants worked and talked together about the challenges and opportunities of the world’s urban deltas at a Sustainable Urban Deltas conference in 2016 .
Deltaic countries who have joined The Delta Coalition include: Bangladesh, Colombia, Egypt, France, Indonesia, Japan, Korea, Mozambique, Myanmar, the Netherlands, the Philippines, and Vietnam . Other organizations moving forward toward sustainable urban deltas are PRIVA, and Sustainable Urban Delta where waste water recycling, or creating bio-fuel from food waste are examples of sustainable innovations for urban deltas .
World City Populations 1950-2030
By one count, over 1/4 of the world’s 136 largest port cities occupy deltaic formations  and the percentage of people living in urban areas “has grown from 34% in 1960 to a projected 66% in 2050” .
Urbanization is directly related to economic growth, creating more jobs, and increasing population; though this steadfast increase is positive in some ways, it also increases the chance of poor governmental preparedness resulting in poor living conditions, quality of life, and slums .
“It is clear we can only solve the world’s environmental problems if we solve the problems of our cities first” . — According to Chief Curator of IABR ( International Architecture Biennale Rotterdam), world leaders must invest in learning the capacity of cities, experiment, and join networks while creating new and positive urban visualizations towards a productive, clean and socially inclusive city .
In regards to Louisiana’s urban delta, CPRA developed Louisiana’s Comprehensive Master Plan for a Sustainable Coast to incorporate coastal wetland protection and restoration for coastal and deltaic communities, and CWPPRA projects are consistent with the Master Plan.