Grand Lake (Colorado)

Grand Lake is Colorado's largest and deepest natural lake. It is located in the headwaters of the Colorado River in Grand County, Colorado. On its north shore is located the historic and eponymous town of Grand Lake. The lake fills a glaciated valley that is dammed in part by glacial till from the Pinedale Glaciation, and is younger than about 12,000 years. Natural tributaries to the lake are the North Inlet and East Inlet, both of which flow out of Rocky Mountain National Park, which surrounds the lake on three sides: Grand Lake is located 1 mile from the Park's western entrance. Grand Lake was named Spirit Lake by the Ute Tribe because they believed the lake's cold waters to be the dwelling place of departed souls.

Colorado-Big Thompson Project

As part of the Colorado-Big Thompson Project, Grand Lake forms a continuous body of water with the man-made reservoir Shadow Mountain Lake, which under natural conditions then flows into another man-made reservoir, Lake Granby. The elevation of Grand Lake is maintained between 8,367 feet (2,550 meters) and 8,366 feet (2,549.8 meters). When the Colorado-Big Thompson (C-BT) project is diverting water to northeastern Colorado, water collected in Lake Granby can be pumped back into Shadow Mountain where it flows backward into Grand Lake, then under Rocky Mountain National Park and the Continental Divide via the Alva B. Adams Tunnel to the Big Thompson River on the eastern slope of the Rocky Mountains. From there, the water flows into the South Platte River and is used for agriculture, municipal, and industrial purposes. Diverted C-BT water provides hydroelectric power to five power stations on the eastern slope of the Colorado Rockies.

Grand Lake (New Brunswick)

Grand Lake is a lake in central New Brunswick, Canada, approximately 40 kilometres east of Fredericton; and the province's largest freshwater lake. The lake drains through the Jemseg River and the Grand Lake Meadows into the Saint John River.

The lake is popular for recreation with locals, with several beaches and cottages on its shores.

Commercial barges of forest products were towed across the lake from a large sawmill in Chipman to a pulp mill in Saint John until the late 1990s. Other industrial activity that were around the lake includes New Brunswick's largest coal mining area with extensive strip mines in the Newcastle Creek valley; a coal-fired power generating station has been torn down, formerly operated by NB Power, is located on the lake shore near the village of Minto.

Communities along or near Grand Lake include:

Lakes and rivers which drain into Grand Lake include:

Grand Lake (Newfoundland and Labrador)

Grand Lake is a large lake in the interior of the island of Newfoundland, in the Canadian province of Newfoundland and Labrador. It has an area of 534 km², making it the largest lake on Newfoundland. The lake was flooded in 1924 with the construction of the Main Dam to a depth of approximately 12 meters above original lake level, which in turn combined with Sandy Lake and Birchy Lake.

The lake serves as a reservoir for the hydro-electric generating station at Deer Lake, which was constructed to provide power for the pulp and paper mill at Corner Brook. Contained with the lake is the 18th largest lake-island in the world, Glover Island.

It is located on the west side of the Newfoundland, 24 km southeast of the city of Corner Brook. Fed by numerous small streams and brooks, it drains into Deer Lake via the 11-km Humber Canal, and then via the Humber River, into the Bay of Islands. The lake contains the uninhabited Glover Island (178 km²). Together with its feeder lakes, Sandy and Birchy, Grand Lake forms a waterway much used by recreational boaters.