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.
Indian Lake Chain, Ontario
The Indian Lake Chain is a tourism designation given to a series of interconnected lakes located northwest of the community of Vermilion Bay in Kenora District, Ontario, Canada. The designation takes its name from Indian Lake that is part of the series. According to maps published by resorts located on the lakes, the Indian Lake Chain consists of ten lakes: Little Boulder Lake, Boulder Lake, Cobble Lake, Bladder Lake, Big Moose Lake, Little Moose Lake, Whitney Lake, Edward Lake, Indian Lake and Forrest Lake. However, the Atlas of Canada shows only seven lakes, as Little Boulder, Boulder, Cobble and Bladder Lakes are all simply designated "Cobble Lake". The surface elevation of the lakes is approximately , and the water level is maintained by the Forest Lake Dam. (Forest Lake is spelled with two "R"s on local maps but only one at the Atlas of Canada).