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
Gahcho Kue Diamond Mine Gahcho Kue Diamond Mine The Gahcho Kué Diamond Mine is located on the Canadian tundra in the Northwest Territories. It is situated at Kennady Lake (), in the Akaitcho Treaty 8 Territory AK claim block, which is southeast of the Snap Lake Diamond Mine and approximately east northeast of Yellowknife. The site is served by Gahcho Kue Aerodrome, which has both an ice runway in winter and a year-round gravel runway, and a spur of the Tibbitt to Contwoyto Winter Road from Lupin Mine. the main camp is at , north of the ice strip, with a smaller site at