Manic-1 is a hydroelectric power station and dam at the mouth of the Manicouagan River 3 km (1.9 mi) west of Baie-Comeau, Quebec, Canada.

This power station was further supported and regulated by the McCormick Dam on St. Anne lake which Hydro-Québec had completed by 1959.

However, as plans for the Manicouagan-Outardes project progressed, engineers discovered that water flow at the mouth of the Manicouagan could be better utilized.

Additionally, Hydro-Québec decided to build the Manic-1 generating station adjacent to and augmenting the existing plant and dam.

[3] The Manic-1 Dam consists of a concrete center portion that houses the power station and two rock-fill dikes on either side.