The Moragolla Dam is a planned hydroelectric dam in Moragolla, Sri Lanka. The dam is to be high and is planned to create the Moragolla Reservoir with a maximum supply level at MSL. Upon completion, the Moragolla Power Station would have a gross installed capacity of from two francis turbines.
Preliminary assessments and feasibility studies of the hydroelectric dam and power station began on . The dam is planned to impound the Mahaweli River at Weliganga and have five spillways, with the powerhouse located approximately from the tailrace discharge of the Kotmale Power Station.
The construction of the Moragolla Dam and underground penstocks posed significant threats to the endangered green labeo fish species in the project site.
The project site is located on the upper reaches of the Mahaweli Ganga in the Central Highlands.