| Gregory Lake | |
| Pushpin Map: | Quebec |
| Pushpin Map Caption: | Location in Quebec |
| Location: | Lac-Croche (TNO), La Jacques-Cartier Regional County Municipality (MRC), Capitale-Nationale |
| Coords: | 47.3553°N -71.5895°W |
| Lake Type: | Natural |
| Inflow: | (Clockwise from the mouth) Tourilli River, outlet of Lac des Doradilles, the outlet of a group of lakes including Hunau, Crochetière and Pleurotes, and the outlet of lakes Fruze, Chesnay, Godman, Etheleen, Petit lac Etheleen and du Piedmont |
| Outflow: | Tourilli River |
| Basin Countries: | Canada |
| Length: | 2.3km (01.4miles) |
| Width: | 1.1km (00.7miles) |
| Area: | NaNha |
| Depth: | NaNm (-2,147,483,648feet) |
| Max-Depth: | NaNm (-2,147,483,648feet) |
| Elevation: | 634m (2,080feet) |
| Islands: | 3 |
Lac Gregory is a body of fresh water crossed from north to south by the Tourilli River, located in the Laurentides Wildlife Reserve, in the unorganized territory of Lac-Croche, in the La Jacques-Cartier Regional County Municipality, administrative region of Capitale-Nationale, in province from Quebec, to Canada.
The watershed of Gregory Lake is served by a few secondary forest roads for the needs of forestry and recreational tourism activities.[1]
Forestry is the main economic activity in the sector; recreational tourism, second.
The surface of Lake Gregory is generally frozen from the beginning of December to the end of March; safe circulation on the ice is generally done from the end of December to the beginning of March.
Lake Gregory has a length of, a width of and its surface is at an altitude of . This lake between the mountains is akin to the following three bays:
The mouth of Gregory Lake is located northeast of Tourilli Lake, west of the course of Jacques-Cartier River and north of the confluence of the Tourilli River and the Sainte-Anne River.[2]
From the mouth of Gregory Lake, the current descends on generally towards the south, following the course of the Tourilli river to its confluence with the Sainte-Anne River; thence, the current generally flows south along the current of the Sainte-Anne river to the northeast bank of the Saint-Laurent river.[2]
The toponym "Lac Gregory" was formalized on December 5, 1968, by the Commission de toponymie du Québec.[3]