Eastmain-1-A/Sarcelle/Rupert Project INFORMATION BULLETIN
NO. 2
JANUARY 2011
Increased Flow Sector Opinaca Reservoir After the partial diversion of the Rupert River
Before the partial diversion of the Rupert River 300 m3/s
Sarcelle powerhouse (under construction)
Opinaca reservoir
Sarcelle powerhouse (under construction) Opinaca reservoir
Natural inflows to Opinaca reservoir
0
15 km
Lambert, NAD83
Eastmain-1-A powerhouse (under construction) Eastmain 1 reservoir
6675_geq_1114_101130.fh10
Eastmain-1 powerhouse Outflow from the Rivière Eastmain
300 m3/s
Lac Boyd
Outflow from the Rivière Eastmain
0
15 km
Lambert, NAD83
Natural inflows to Opinaca reservoir
Eastmain-1 powerhouse
Eastmain-1-A powerhouse (under construction) Eastmain 1 reservoir
Before the partial diversion of the Rupert River
After the partial diversion of the Rupert River
The outflow from the Rivière Eastmain was ± 600 m3/s. The natural inflows (i.e., the water from nearby mountains and rivers) to Opinaca reser voir is ± 300 m3/s. The total flow at the spillway of Sarcelle powerhouse was hence ± 900 m3/s.
New inflows from the Ruper t diversion are ± 450 m3/s, for a total flow of ± 1,350 m3/s to Sarcelle powerhouse.
6675_geq_1114_101130.fh10
Lac Boyd
= 100 m3
Year 2010 Due to unusual weather conditions (there was little precipitation and natural inflows were low), 2010 cannot be considered a reference year.
Did you know ... A trailer truck is the equivalent of 100 m3 of water.
Note: Averages are provided for information purposes, to facilitate understanding. Flow data var y from year to year.
Information about the impact of hydroelectric developments on the territory.
Water level at Opinaca reservoir (diagram not to scale)
708 ft (215,8 m)
Maximum
± 2,3 ft (0,7 m) 698,8 ft (213 m)
Average after diversion Average before diversion Minimum
694,8 ft (211,8 m)
Sarcelle powerhouse Note: Averages are provided for information purposes, to facilitate understanding. Water level data var y from year to year.
Wintertime management of Opinaca reservoir Wintertime management
Max. level
The water level at Opinaca reser voir will be a little higher in early winter (mid-November) and will decline steadily throughout the winter until April.
Min.. level Nov.
Dec.
Jan.
Before diversion
Feb.
March
April
Month
After diversion
Sarcelle powerhouse during the construction phase.
For more information : MARTIN DESGAGNÉ, Advisor - Native Affairs and Projects 1 800 903-9705, ext. 4951 This information bulletin is published by Hydro-Québec Direction régionale - La Grande Rivière Ce document est également publié en français.
Information about the impact of hydroelectric developments on the territory.