Fresh concern is emerging over China’s planned mega dam in Tibet on the Brahmaputra River, after Chinese researchers warn that runoff and flood risks could increase this century. The study uses tree-ring data to model how future climate scenarios may affect flows in the Yarlung Tsangpo, the river section that becomes the Brahmaputra downstream.

The research is framed as a potential complication for water management along an international river system. Multiple outlets link the findings to the $168 billion dam project and note that downstream countries including India and Bangladesh could be affected, prompting calls for careful planning of water-resource infrastructure.

Across coverage, the core message is consistent: researchers highlight possible changes in rainfall-runoff patterns that could increase flood risk, and they connect that uncertainty to the impact of large upstream hydropower development.