The flash flood damaged the intake and pen stock pipelines of the project and the mud carried by the flash flood submerged the power house, executive engineer of Geku power division Ojing Nobeng said in a report.
The impact of the flood was so severe that check bunds or stop points made in the channel at many points were totally washed away, the report said.
The project was on the verge of being commissioned and trial and testing was supposed to begin from March 15, Nobeng informed adding restoration works are under way.
Teams of the power department were immediately pressed into service for rectification and restoration works and the damaged line was successfully restored on a temporary basis considering the necessity and urgency of the matter in view of the ongoing CBSE examinations.
The line would be restored after the spares reach the site, the release added.