After completion of the joint environmental assessments by the Cree, Quebec and Canadian authorities, the governments of Quebec and Canada authorized the diversion and construction of hydroelectric installations on the Rupert River in late 2006. The diversion of water from the river began in November, 2009. or 68% of its basin will be diverted through a long transfer tunnel from the Rupert Forebay to the Rupert Tailbay in the Nemiscau basin and then onward to the Eastmain 1 Reservoir. The remaining work was complete in 2012.