Selling water

Global warming may cause it to become a common practice:

Floods and drought do not respect borders. As radical as the idea sounds, Canadians, like the pioneers on Milk River a century ago, will have to share their water with the US, through bulk transfers and the management of river systems. Tentative steps toward integrating the North American watershed have already started, with proposals to divert water from Lake of the Woods in northwest Ontario to the Dakotas, and from Shuswap Lake in central BC to the increasingly dry Okanagan, from which it would flow to the US through the Columbia River. One of the largest proposed diversions would reroute water from the Nelson River in northern Manitoba to the US border, earning the province $7 billion annually in export royalties.