At the end of 2014, Cormagdalena signed with the Navelena Consortium, the Public-private partnership contract for the recovery of navigation on the Magdalena River, a contract for thirteen and a half years and whose initial value is 2.5 billion pesos. This project intends to build channeling works in a 256-kilometer sector between Puerto Salgar and Barrancabermeja, in addition to carrying out dredging in another 650-kilometer sector, between Barrancabermeja and Bocas de Ceniza, the river's mouth in the Caribbean Sea, near Barranquilla. From various disciplines and invited by the National Environmental Forum and the Friedrich-Ebert-Stiftung in Colombia (Fescol), ten of the main Colombian experts on the Magdalena River and its basin wrote the texts that are delivered here, to answer two interrelated questions : What are the economic, social and environmental risks of the navigability project ?; and where does the river go?