Lac des Roches

The Lac des Roches (English: lake of rocks) is a freshwater body of the city of Quebec, in the region of the Capitale-Nationale, in the province of Quebec, in Canada.

Lake des Roches
LocationCapitale-Nationale, Quebec
Coordinates46°55′16″N 71°15′05″W
Primary inflowsFive small forest and mountain streams.
Primary outflowsRivière des Roches
Basin countriesCanada
Surface elevation295 m (968 ft)
SettlementsQuebec City

It is the main reserve of drinking water in the arrondissement of Charlesbourg. Lac des Roches is mainly fed by five forest streams from the surrounding mountains.

The Lake Saint-Charles is served on the east side mainly by the Lac des Roches road and on the south side by the Arthur-Drolet road for the needs of recreational tourism and forestry.[1]

The surface of Lake Saint-Charles 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.

Description

The lake is composed of two shallow basins, surrounded by a mixed forest[2]. A peninsula attached to the north shore stretches for 0.5 kilometres (0.31 mi) to the east in the central part of the lake.

The shore of its eastern portion is mainly occupied by private properties where a dozen chalets are located there, while its western portion is owned by the City.[3] Human activity is prohibited there since the lake is the source supplying the water treatment plant in Charlesbourg. Inaugurated in 2009, it is one of the four water treatment centers in Quebec City.[4]

The mouth of Lac des Roches is located 4.7 kilometres (2.9 mi) northeast of the mouth of the Roches River and 6.6 kilometres (4.1 mi) north of the center of the Charlesbourg area. [5]

Toponymy

The name of the lake appears for the first time on an 1834 map entitled "The Environs of Quebec", compiled by the merchant Alfred Hawkins[6].

The toponym "Lac des Roches" was formalized on December 5, 1968 at the Commission de toponymie du Québec[6].

  • Sign indicating the prohibitions
  • Building at the outlet of the lake
  • A power line crossing the western basin of the lake
  • Vegetation

Notes and references
  1. Open Street Map - Accessed February 17, 2020
  2. City report of Quebec Ecological diagnosis of Lac des Roches (Drinking water tank) Final report", by Roxane Tremblay and Robert Hamelin of CIMA.
  3. Lac et rivière des Roches - Quebec City
  4. The Charlesbourg water treatment plant now inaugurated
  5. Atlas of Canada - Department of Natural Resources Canada - Lac des Roches - Length of segments established using the distance measurement application
  6. Commission de toponymie du Québec
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See also
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