Lac de Gras a wide and long stream called the Narrows. The median flood peak discharge in the Narrows is making it an important corridor for fish movements. Lac de Gras Lac de Gras is a lake approximately 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. It was called Ekati by aboriginal peoples. The lake is ultraoligotrophic but supports a slow-growing
Luarica diamond mine of ore at an ore grade of per 100 cubic meters (43.2 mg/m³). There is a waste rock overburden of about 9.5 million cubic meters. Mining operations were suspended in May 2009 due to a decline in diamond demand caused by the late-2000s financial crisis. Trans Hex announced in August 2011 that it planned to withdraw from its two Angola joint-ventures with Endiama—Luarica and Fucauma—after failing to reach an agreement with the government of Angola (which owns the other major partner, Endiama). Endiama stated that it planned to restart operations alone. Luarica diamond mine The Luarica diamond mine is a