Robert-Bourassa Reservoir
| Robert-Bourassa Reservoir | |||||||||
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| Coordinates | 53 ° 43 '52 " N , 76 ° 57' 22" W | ||||||||
| Data on the structure | |||||||||
| Lock type: | Earthfill dam | ||||||||
| Construction time: | 1974-1988 | ||||||||
| Height above the river bed : | 137 m | ||||||||
| Power plant output: | 5616 MW + 2106 MW | ||||||||
| Operator: | Hydro Quebec | ||||||||
| Data on the reservoir | |||||||||
| Altitude (at congestion destination ) | 175 m | ||||||||
| Water surface | 2 835 km² | ||||||||
| Storage space | 19th 365 000 000 m³ | ||||||||
| Total storage space : | 61 400 000 000 m³ | ||||||||
| Catchment area | 32 480 km² | ||||||||
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The Réservoir Robert-Bourassa is a reservoir in the Canadian province of Québec . It is located in the Jamésie region , dams the La Grande Rivière and is a major part of the Baie James hydropower project .
description
The reservoir provides the water required for the Robert-Bourassa hydropower plant (formerly called La Grande-2) and the neighboring La Grande-2-A hydropower plant . The two storage power plants generate an output of 5616 and 2106 MW, respectively, and their heads are 137.6 and 138.5 meters, respectively. This makes these power plants one of the largest in Canada.
The Réservoir Robert-Bourassa has a maximum area of 2835 km² (slightly larger than Luxembourg ), the catchment area extends over an area of 32,480 km². A significant part of the water comes from systems further east; these include the Caniapiscau reservoir , the Réservoir Opinaca and the diversion of the Rivière Eastmain . The reservoir has a total storage space of 61.4 billion m³ and a usable storage space of 19.365 billion m³.
The associated Barrage Robert-Bourassa dam was built in 1974. It is 162 m high, 2836 m long and 9 m wide, the fill mass is 23.192 million m³. In order to keep the costs as low as possible, an existing moraine was included in the dam. The flood relief system is designed for a water volume of 17,600 m³ / s. It includes eight passages 12.2 m wide, separated by seven pillars 4.3 m in diameter.
In addition to the dam, 29 smaller dikes were built with a total length of over 25 kilometers. By far the longest is the Digue Duncan (13.7 km) on the Rivière Dessaulniers, a tributary south-east of the main facilities. The river flows into a lake at a height of 143.3 meters, an average of 32 meters deeper than the reservoir. In order to avoid flooding an additional 30 km² and to keep Lac Dessaulniers in its natural form, a pumping station was built to regulate the water level. It was put into operation in 1977 and has four pumps with a capacity of 1.7 m³ / s each.
After four years of construction, the reservoir began to be filled on November 27, 1978, which took a little over a year. The minimum lake level of 167.6 m was reached on September 2, 1979, the maximum lake level of 175.3 m in December of the same year. At the beginning, the reservoir was called Réservoir La Grande-2 . On December 13, 1996, it was renamed in honor of Quebec Prime Minister Robert Bourassa , who had died two months earlier and who had been instrumental in driving the hydropower project forward.
See also
literature
- Société d'énergie de la Baie James (ed.): Le complexe hydroélectrique de La Grande Rivière. Realization of the première phase . Société d'énergie de la Baie James / Éditions de la Chenelière, Montreal 1987, ISBN 2-89310-010-4 .
Individual evidence
- ↑ Centrales hydroélectriques. Hydro-Québec, accessed March 24, 2012 (French).
- ^ SEBJ: Le complexe hydroélectrique de La Grande Rivière. P. 28.
- ^ SEBJ: Le complexe hydroélectrique de La Grande Rivière. P. 117.
- ^ SEBJ: Le complexe hydroélectrique de La Grande Rivière. Pp. 123-126.
- ^ SEBJ: Le complexe hydroélectrique de La Grande Rivière. Pp. 130-131.
- ^ SEBJ: Le complexe hydroélectrique de La Grande Rivière. P. 129.
- ^ SEBJ: Le complexe hydroélectrique de La Grande Rivière. P. 177.
- ^ Robert-Bourassa Réservoir. Commission de toponymie du Québec, accessed March 24, 2012 (French).