Planning for the Lake Winnipeg Regulation/Churchill River Diversion projects proceeded in early 1970s.Discussions also began with potentially affected northern communities.
By 1971, formal discussions were underway with Cross Lake First Nation. In 1974, as development plans matured and construction began, five affected First Nations formed the Northern Flood Committee to facilitate joint consultations with Manitoba Hydro and the Governments about the project.
The Northern Flood Committee, funded by the Federal Government, negotiated the Northern Flood Agreement (NFA) over the following three years. The NFA was signed in 1977. The five NFA First Nations were Split Lake, Nelson House, York Factory, Norway House and Cross Lake.