Rupert dam   Lemare dam   Transfer tunnel   Nemiscau-1 dam   Nemiscau-2 dam   Dikes   Rupert workcamp   Eastmain-1-A powerhouse   Sarcelle powerhouse   Eastmain workcamp   KP 290 weir   KP 223 weir   KP 170 weir   KP 110.3 weir   KP 85 weir   KP 49 weir   KP 33 weir   Rock blanket, KP 20.4   Nemiscau workcamp

Learn about the project and track its progress Rock blanket, KP 20.4 Back to main map >>> This hydraulic structure is located 20.4 kilometres from the mouth of the Rupert River. It is downstream of the place commonly known as "le lieu-dit Gravel Pit" and controls a stretch of river that ends upstream at Smokey Hill Rapids. Click here for plan view Objectives Protect lake cisco and lake whitefish spawning grounds Maintain navigability Fish movement Enable fish to circulate freely Approximate area of influence 3.3 km Date as of which the water level will be substantially maintained As of impoundment of the diversion bays