Which States are involved in Ban Sagar irrigation project?

The Bansagar (Ban Sagar) Dam is a multipurpose project on the Sone (Sona) river in the Ganges basin, located in Madhya Pradesh.

It is a tripartite inter-state venture between Madhya Pradesh, Uttar Pradesh, and Bihar, governed by an agreement signed on 16 September 1973. The cost and water are shared among the three states, with the Bansagar Control Board coordinating the project.

Therefore, the states involved are Madhya Pradesh, Uttar Pradesh, and Bihar.