Lac de Gras
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Lac de Gras is a lake approximately Script error: No such module "convert". north east of Yellowknife, in the Northwest Territories of Canada. Lac de Gras was the centre of the diamond rush of the 1990s. There are two working, and one closed, diamond mines in the area, Diavik Diamond Mine, Ekati Diamond Mine, and the care and maintenance Snap Lake Diamond Mine.[1][2] It was called Ekati by aboriginal peoples.
The lake is ultraoligotrophic but supports a slow-growing but stable population of some eight species of cold-water fishes, including round whitefish, cisco, and lake trout. Lake trout dominate the lake, both numerically and in terms of biomass.[3] Other native fish species include common whitefish, Arctic grayling, burbot, longnose sucker, and slimy sculpin.
Diavik Diamond Mines is conducting open-pit mining of kimberlite pipes using explosives near the lake.[3]
Lac de Gras' surface area is Script error: No such module "convert".; the historical surface area was Script error: No such module "convert"., about 196.4 ha larger than today. The subbasin area is Script error: No such module "convert". with the number of lakes smaller than 1 ha 3,487; 1-10 ha 2,080; 10-100 ha 663; and larger 100 ha 106, together with a total surface area of Script error: No such module "convert"..[4]
Lac du Sauvage is a small lake that drains into Lac de Gras through a Script error: No such module "convert". wide and Script error: No such module "convert". long stream called the Narrows. The median flood peak discharge in the Narrows is Script error: No such module "convert". making it an important corridor for fish movements.[4]
See also
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References
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