Kupli River is an important river of the Khasi and Jaintia Hills of Meghalaya. The Kupli flows for some distance along the Assam-Meghalaya interstate border. It has a unique river bed of limestone and soft rock for a considerable length of its course. Deep valleys and chasms are formed by this river in its course, and near Garampani it falls over sixty feet to give rise to the Iale falls. The Khasi hill people worship goddess Kupli, considered supreme among other river deities. Kupli River drains Manipur, running north into the Brahmaputra. The biggest Hydel plant under North East Electric Power Corporation has come up with dams in the Kupli River.