The multilateral cooperative arrangement of the BRICS, created in 2014, brings together the world´s main emerging economies, comprising 41% of the world´s population, having 24% of the world´s GDP and more than 16% of participation in world trade, covering approximately 30% of the land surface in the world. The main scientific bases of the BRICS Project are: (i) strong integration between intensive experiments, continuous monitoring and computational and analytical mathematical modeling for the solution of environmental problems; (ii) interdisciplinarity and inter-institutional collaboration; (iii) strong integration with undergraduate, strictu sensu postgraduate and latu sensu postgraduate; (iv) scientific- technological extension projects. Within this comprehensive view, scientific issues that deserve priority attention were identified, namely: (i) global climate change and its regional effects; (ii) mesoscale hydrology and meteorology; (iii) surface-atmosphere interactions, micrometeorology and hydrology of the vadose zone; (iv) quality of water, air and soil; and (v) management of water resources. The research themes allow organizing hydrometeorological information compatible with the conceptual formulations of the modeling platforms in order to subsidize a better understanding of the social dynamics and fight against inequalities in the scale of the hydrographic basin.