The result of numerous consultations with the communities concerned, the Eastmain-1-A/Sarcelle/Rupert project has incorporated many environmental protection measures into its design and has taken into account the concerns expressed by the host communities.
Owing to a combination of dikes and canals that will improve water flow, the creation of the Rupert diversion bays will flood a minimal land area. Moreover, a substantial ecological instream flow and a series of weirs in the Rupert River will protect fish habitat, preserve the landscape and maintain navigation and other activities in the area. Another important aspect is that the Crees are participating in all stages of the project, from design to environmental follow-up.
Aspects considered during the design phase
- Minimal flooding of land
- Introduction of an ecological instream flow regime at the Rupert River closure point
- Maintenance of flow equivalent to the natural flow in the Lemare and Nemiscau rivers
- Building of hydraulic structures on the Rupert River to protect fish communities and habitat, preserve the natural appearance of the river and support navigation and land use in some of its stretches
- Preservation of the natural levels in Mesgouez and Champion lakes and maintenance of the level in Lake Nemiscau
- Secure drinking water supply for Waskaganish
- Maintenance of the water level in Sakami Lake, as stipulated in the Sakami Lake Agreement
The lessons learned from the many environmental studies and Cree traditional knowledge also influenced the project's design and the development of mitigation measures.