[2] Formerly, Mae Wong National Park was home to hill tribes including Hmong, Yao, Muzer (Lahu), and Karen.

Opponents of the project state that it will eliminate around 1,760 hectares (17.6 km2) of low-lying forest, and reduce the habitat for animals in the national park which covers 900 km2.

[3][4] In July 2012 a case was filed at Central Administrative Court, against Yingluck Shinawatra, the cabinet, the director-general of the Royal Irrigation Department, and the Minister of Agriculture and Cooperatives.

[9] In September 2016, plans to build the dam were revived by Agriculture and Cooperatives Minister Chatchai Sarikulya.

The minister has been reportedly seeking an order under Section 44 of the interim charter to press ahead with the project.