The environmental impacts of the James Bay Project largely stem from the creation of a complex chain reservoir through the integration of all the watersheds of the eastern shores of the Hudson Bay, from the southern tip of James Bay to Ungava Bay in the north. This has had the consequence of diverting the flow of water from four major rivers into a large body of water, ultimately changing the dynamics of the land, an environmental political phenomenon labelled by some critics as a "first build, then paint green" policy.
