A sign featuring the logos for the 2016 summer olympics and the 2016 paralympics (R) is on display at Maracana stadium in Rio de Janeiro, Brazil, in this August 7, 2014 file photo. [Photo/IC]

RIO DE JANEIRO -- Brazilian President Dilma Rousseff has vowed to assume a greater role in preparations for the Rio 2016 Olympics.

Rousseff made the declaration after meeting with Rio de Janeiro governor Luiz Fernando Pezao, mayor Eduardo Paes and members of the Games organizing committee late on Tuesday.

"I promised [Rio 2016] president Carlos Arthur Nuzman and our objective is to integrate ourselves more deeply," Rousseff said.

Organizers and local government officials have faced criticism over the polluted state of the Olympic sailing, rowing and canoeing venues.

Last month the International Sailing Federation warned that sailing events could be shifted from Guanabara Bay, which remains littered with trash and untreated sewage.

Rousseff said a sprawling corruption scandal engulfing state-run oil firm Petrobras, politicians and construction firms would not affect work on Olympic venues.

"I don't see any impact that (it) could have on Olympic projects," Rousseff said. "I don't have anything showing that it could have an impact."

Rousseff said she would return to Rio in the coming months to meet again with organizers and government officials.

The Rio 2016 Games, to be held from September 5 to 21 next year, will be the first Olympics to be held in South America.