Carpenter Lake, officially Carpenter Lake Reservoir, is the largest of the three reservoir

Reservoir

A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

s of the Bridge River Power Project

Bridge River Power Project

The Bridge River Power Project is a hydroelectric power development in the Canadian province of British Columbia, located in the Lillooet Country between Whistler and Lillooet...

, which is located in the mountains west of Lillooet, British Columbia

Lillooet, British Columbia

Lillooet is a community on the Fraser River in western Canada, about up the British Columbia Railway line from Vancouver. Situated at an intersection of deep gorges in the lee of the Coast Mountains, it has a dry climate- of precipitation is recorded annually at the town's weather station,...

. The lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 is about 185 kilometres north of the province's major city of Vancouver and is formed by the diversion of the Bridge River

Bridge River

The Bridge River is, or was, a major tributary of British Columbia's Fraser River, entering that stream about six miles upstream from the town of Lillooet.-Name:Its name in the Lillooet language is Xwisten , sometimes spelled Nxwisten or Nxo-isten)...

 by Terzaghi Dam

Terzaghi Dam

Terzaghi Dam, located about 100 km NE of the resort of Whistler, British Columbia in western Canada, is the key diversion dam in the Bridge River Power Project. It forms the project's largest reservoir, Carpenter Lake west of Lillooet...

 into Seton Lake

Seton Lake

Seton Lake is a freshwater fjord draining east via the Seton River into the Fraser River at the town of Lillooet, British Columbia, about 22 km long and 243 m in elevation and 26.2 square kilometres in area...

 via a tunnel through Mission Mountain, which separates the Seton and Bridge drainages. Several ranches and homesteads in the broad serpentine of the upper Bridge River basin were flooded out by the hydro project, which changed the character of the upper valley forever.

Carpenter Lake is about 50 kilometres in length, although its upper reaches beyond the flooded gold mining town of Minto City

Minto City, British Columbia

Minto City, often called just Minto, sometimes Minto Mines or Minto Mine, was a gold mining town in the Bridge River Valley of British Columbia from 1930 to 1936, located at the confluence of that river with Gun Creek, one of its larger tributaries...

 are usually mudflat due to fluctuations in the level of the reservoir. Its total area approaches 50 square kilometres.

Name

The lake is named after a Mr. Carpenter, an engineer who first moved to Canada in 1909 and performed much of the early design work on the power project for the firm of Sanderson and Porter, and supervised construction of the first tunnels through Mission Ridge

Mission Ridge (British Columbia)

Mission Ridge, also known as Mission Mountain, is a ridge in the Bridge River-Lillooet Country of the South-Central Interior of British Columbia, Canada, extending westward from the town of Lillooet along the north side of Seton Lake to Mission Pass, which is immediately above and to the north of...

from 1927 to 1931. He retired in 1944.