Garret Hardin's (1968) understanding of the "tragedy of the commons" points to the need to effect the act or effect of managing the available natural resources, enabling the projection of a more sustainable future for present and future generations. In this sense, this work presents a brief characterization of local initiatives for the use of rainwater in the islands of the city of Belém do Pará, provides the systematization of data and information considering various aspects related to water use, stating that it is impossible to construct practices Addressing environmental issues in isolation. Therefore, the present research brings as an dissertation an ATLAS of the initiatives of use of rainwater in the estuary of Belém, considering issue...