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The Cat Arm Generating Station is located on the Northern Peninsula of Newfoundland and makes use of 380.5 m of head between the Reservoir and White Bay . Each of the two units operates with an average rated flow of 20 m3/s to generate a total 127 MW of electrical power with an average annual production of 733 GWh. The two 63.5 MW units, equipped with Pelton Turbines , were first synchronized on February 10 and 12, 1985.

The watershed of the Cat Arm River was located on a plateau with an average elevation of approximately 518 m on the raised uplands of the Long Range Mountains . The project involved the creation of a reservoir with a surface area of approximately 53 square kilometres by the erection of one main Dam and seven smaller dams.