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Eastmain-1-A/Sar celle/Ruper t Hydr oelectric Development INFORMATION BULLETIN NO. 3 JANUARY 2011

Increased Flow Sector Boyd Lake and Sakami Lake After the partial diversion of the Rupert River

Before the partial diversion of the Rupert River

300 m3/s

300 m3/s

hway ïga hig a t s n a Tr

hway ïga hig a t s n a Tr

Boyd Lake

Outflow from Sarcelle powerhouse

0

15 km

Lambert, NAD83

Sakami Lake

es

Natural inflows to Lac Boyd and Lac Sakami

Sarcelle powerhouse (under construction) Opinaca reservoir

m Baie- Ja

m Baie- Ja

es

Sakami Lake

Natural inflows to Lac Boyd and Lac Sakami

Boyd Lake

Outflow from Sarcelle powerhouse

0

15 km

Lambert, NAD83

= 100 m3

Sarcelle powerhouse (under construction) Opinaca reservoir

Before the partial diversion of the Rupert River

After the partial diversion of the Rupert River

The outflow from the Sarcelle powerhouse spillway ± 900 m3/s. The natural inflows (i.e., the water from nearby mountains and rivers) to Lac Boyd and Lac Sakami is ± 170 m3/s. The total flow at the Lac Sakami weir was hence ± 1,070 m3/s.

The outflow from the Sarcelle powerhouse spillway after the Ruper t diversion is ± 1,350 m3/s. Since the natural inflows to Lac Boyd and Lac Sakami are ± 170 m3/s, the total flow after the Ruper t diversion is ± 1,520 m3/s at the Lac Sakami weir.

Did you know ... A trailer truck is the equivalent of 100 m3 of water.

Year 2010 Due to unusual weather conditions (there was little precipitation and natural inflows were low), 2010 cannot be considered a reference year.

Note: Averages are provided for information purposes, to facilitate understanding. Flow data vary from year to year.

Information about the impact of hydroelectric developments on the territory.


Water level at Boyd Lake Average after diversion = ± 2.0 ft. (0,6 m) Average before diversion = 656.2 ft. (200 m)

Note: Averages are provided for information purposes, to facilitate understanding. Water level data vary from year to year.

Water level at Sakami Lake Maximum 612 ft. (186,5 m) Average after diversion ± 1.2 ft. (0,4 m) Average before diversion 607.9 ft. (185,3 m) Minimum 602,7 ft. (183,7 m)

Note: Averages are provided for information purposes, to facilitate understanding. Water level data vary from year to year.

Information : MARTIN DESGAGNÉ, Advisor – Aboriginal Affairs and Project Follow-Up, 1 800 903-9705, ext. 4951 This bulletin was published by the Direction régionale – La Grande Rivière, Hydro-Québec. Ce document est également publié en français.

Information about the impact of hydroelectric developments on the territory.

2011-01 - Iyimtaak - N3 - EM1A-SR - ANG  

Before the partial diversion of the Rupert River 0 15 km 0 15 km After the partial diversion of the Rupert River Sarcelle powerhouse (under...

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