Mackenzie River
At , the Mackenzie River drainage basin encompasses nearly 20 percent of Canada. About , or 54 percent of the basin, lies above Great Slave Lake. Permafrost underlies about three-quarters of the watershed, reaching up to deep in the Mackenzie Delta. As a whole, the Mackenzie basin receives only meager to moderate rainfall, averaging over the entire basin, though mountain areas experience much higher precipitation, and areas near and north of the Arctic Circle receive much lower precipitation.
Okanagan Basin
The Canadian Environmental Grantmakers’ Network considers the Okanagan Basin to be the most arid watershed in Canada, with an urgent need for effective water management. The Okanagan Basin Water Board was established more than 35 years ago, to provide leadership on regional water issues, taking a basin-wide perspective and seeking collaborative solutions.