The North American Water and Power Alliance (NAWAPA), designed by Parsons engineering company in the 1960s, is an integrated water, power, and agricultural project, which proposes to take about 17% of the annual runoff of the rivers of Alaska and northern Canada (some 1,000 km3 of water), and channel it southward to Canada, the U.S.A., and Mexico. The topographical map of North America (below) shows how closely NAWAPA-Plus coheres with the geophysical aspects of the region.