In which of the following districts is Baira Siul Dam located?

The correct option is Chamba.

Key Facts about Baira Siul Dam:
• Location: The Baira Siul Dam is a major hydroelectric power station located in the Chamba district of Himachal Pradesh, India.
• River System: The project harnesses the waters of the Baira, Siul, and Bhaledh streams, which are main tributaries of the Ravi River.
• Operator: It is operated by the National Hydroelectric Power Corporation (NHPC). Commissioned in 1981, it holds historical significance as the very first power station constructed and completed by NHPC.