Seven Sisters Generating Station

Seven Sisters Generating Station
The Seven Sisters Generating Station, from the downstream side.
Location of Seven Sisters Generating Station in Manitoba
Country	Canada
Location	near Seven Sisters Falls, Manitoba
Coordinates	50°7′13″N 96°0′44″W / 50.12028°N 96.01222°W / 50.12028; -96.01222
Status	Operational
Construction began	1929
Opening date	1952
Owner(s)	Manitoba Hydro
Dam and spillways
Impounds	Winnipeg River
Length	128 metres (420 ft)
Spillways	2
Reservoir
Creates	Natalie Lake
Power Station
Type	Conventional
Installed capacity	165 megawatts
Annual generation	990 million kilowatt-hours
Website Manitoba Hydro

The Seven Sisters Generating Station is a hydroelectric generating station located on the Winnipeg River, in eastern Manitoba near Seven Sisters Falls, Manitoba. The reservoir is called Natalie Lake and is used for recreational boating and fishing.

The present capacity of the generating station is 165 megawatts, and in a typical year the station can produce 990 million kilowatt-hours. It is the largest generating station on the Winnipeg River. Power is transmitted over five 115 kV lines to Winnipeg, and sixth and seventh lines to the Whiteshell and on to Kenora, Ontario.^[1]

The powerhouse is 128 metres long. The total discharge of water from the station is 1,146 cubic metres per second, with a total drop from forebay to tailrace of 18.6 metres. The station has a 225 metre-long spillway. The forebay nominal elevation is 274.2 metres AMSL and the forebay area is 21 square kilometres. The forebay is retained by more than 12 km of dykes.^[1]