Uma Oya Multipurpose Development Project is being implemented by the Ministry of Irrigation and Water Management. The Project is located in the Welimada area in Badulla District.

The Project includes the components of construction of two dams across Uma Oya and a tributary at Welimada, trans-basin diversion tunnel, and underground hydropower plant, diversion of 145MCM of water to irrigate approximately 5000 hectares of land in Hambantota and Monaragala Districts and other downstream requirements. The expected annual energy production is 290 GWh. The Total estimated cost of the project is 529 USD Million.  In terms of physical progress, 96% of the construction is completed and expected to complete the project and connect to the National Grid by end of June 2021.