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.
Central Asian Internal Drainage Basin
The Central Asian Internal Drainage Basin or Central Asian Inland Basin is the largest of 3 major hydrological basins that cover Mongolia (cf. Arctic Drainage Basin & Pacific Drainage Basin). It is an endorheic basin.