Figure 9.8: -

Historical and projected future watershed classifications for the Columbia Basin, based on the global emissions scenarios (the A1B relatively high emissions scenario and the B1 low emissions scenario) for the 2020s, 2040s and 2080s. As climate change progresses, 50% of the total reservoir storage is expected to lie in Canada. Canada is also expected to have an increasingly dominant portion of natural water storage as snowpack.