The Leimatak Hydroelectric Project is a major source of power generation located on the:

Manipur River
Barak River
Imphal River
Chindwin River

The correct answer is: Manipur River.

The Leimatak Hydroelectric Project is a major source of power generation located on the Manipur River in Manipur, India. The project was commissioned in 2001 and has a capacity of 100 MW. The project is owned and operated by the Manipur State Power Development Corporation (MPSPDC).

The Manipur River is a tributary of the Barak River. The Barak River is a major river in the northeastern states of India. The Barak River originates in the Manipur Hills and flows through the states of Manipur, Assam, and Tripura. The Barak River joins the Brahmaputra River near Karimganj in Assam.

The Barak River is a major source of water for irrigation, drinking water, and hydroelectric power generation. The Barak River is also a major transportation route in the northeastern states of India.

The Leimatak Hydroelectric Project is a major source of power generation in Manipur. The project has a capacity of 100 MW and is owned and operated by the Manipur State Power Development Corporation (MPSPDC). The project is located on the Manipur River, a tributary of the Barak River.