On December 17, 2009, the Delta Alliance, an emerging international network for the resilience of river deltas worldwide, was officially announced by dignitaries of Indonesia, Bangladesh, California and the Netherlands.

Delta Alliance is devoted to the successful responses to the most critical present and future problems facing river delta regions worldwide. The first four river delta locations that will benefit of the sharing of both scientific and local expertise and experience are San Francisco Bay and Delta in California (USA), Rhine Delta in the Netherlands, Mekong and Red River Deltas in Vietnam and Ciliwung River Delta in Indonesia.

Objective and approach
The overarching objective of the Delta Alliance is to support the development and dissemination of new and existing knowledge on how river delta regions may respond to the challenges that deltas face, in particular those that come with a changing climate. The Delta Alliance approach includes international research collaboration, multi-stakeholder dialogue and information dissemination in a network of dedicated individuals and organizations.

Partners involved
A growing number of organizations, like research institutes, governments, NGO's and the private sector, all over the world are involved in the Delta Alliance.

The Delta Alliance is working together with the World Estuary Alliance and Connecting Delta Cities.

The announcement took place in the Holland Climate House on the 9th day of the Copenhagen Climate Conference.