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Protecting species diversity and the biophysical environment
Banks
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Bank stability will be monitored along the reduced-flow stretch of the Rupert River at the Waskaganish water intake and along the Grande Rivière estuary.
Our follow-up activities will include taking measurements to assess how the banks have changed from their baseline state, as well as verifying the effectiveness of our mitigation measures.
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Downstream of Rupert dam
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The more sensitive exposed areas will be seeded with grasses to limit the risk of erosion.
The existing armor rock at the Waskaganish water intake will be extended to protect the structure.
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Despite the reduction in flow, some areas will remain sensitive to erosion, particularly newly exposed banks.
There are unstable slopes near the water intake.
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In the Grande Rivière estuary
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The erosion-sensitive sections of banks between La Grande-1 generating station and Chisasibi will be blanketed with granular material to stabilize the base of the slope.
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The increased flow in the Grande Rivière estuary may intensify the current rate of bank erosion.
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Schedule of mitigation measures
Bank stabilization along the Rupert River: 2010 and 2011.
Bank stabilization along the Grande Rivière estuary: 2007 to 2009.
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