Among the 101 tributaries of Gualaxo do Norte, Carmo and Doce Rivers mapped as affected by the collapse, 60 underwent the recovery process. This is an important action to reduce turbidity, because it prevents the solids from being carried to water. The remaining are estimated to be recovered until June 2017.
The work started with the tributaries which most compromised the main rivers. After cleaning dead vegetation around riverbeds and on surrounding plains, the turbidity plume was removed from background and the land on the sides were adapted.
One of the stages of the process provides for the protection of riverbanks, with the construction of a type of downhill, called talus, and the arrangement of stones on each side. Areas will also be coated with a biodegradable blanket made of coconut fiber or straw, and revegetated with seeds. These elements will be a natural protection of the soil for subsequent planting of native species. In addition to preventing erosion, recovery actions contribute to the Plan for Rainy Season.
The Renova Foundation has the mission of implementing and managing the reparation, restoration and reconstruction programs for the regions impacted by the bursting of the Fundão dam, located in the subdistrict of Bento Rodrigues, in Mariana, Minas
The Foundation's role is to restore and reestablish the communities and the resources impacted by the bursting and also substitute or compensate what cannot be remedied, always in an efficient, proper, transparent and ethical manner.