The process to permanently seal six tunnels of the stalled Lohari Nagpal hydropower project in Uttarakhand has officially begun, bringing closure to a project that has remained inactive since 2010. Authorities have started removing the accumulated water from inside the tunnels through a dewatering process, which is the first step before structural inspections and final sealing work.

Officials stated that once the tunnels are fully drained, detailed inspections will be carried out to assess the structural condition of the unfinished sections. Any unstable or weakened portions of the tunnel walls will be strengthened to ensure safety before the final sealing begins. Both ends of each tunnel will then be closed using concrete plugs approximately five metres deep, designed to permanently secure the structures.

The Lohari Nagpal hydropower project was originally launched in 2006 as part of a plan to expand hydroelectric generation in the region. However, the project faced strong opposition from environmental groups, local communities, and religious organisations due to concerns about ecological damage and the sanctity of the Ganga river. After protests intensified, the project was halted in 2010 when it was nearly 70 percent complete, and it was later formally cancelled by the government.

According to Uttarakhand Jal Vidyut Nigam Limited (UJVNL), the current sealing operation is expected to cost around ₹22 crore. Officials explained that leaving the tunnels unsealed for many years allowed water to accumulate inside, which created pressure on the surrounding rock and increased the risk of structural collapse. This also raised safety concerns for nearby hillside villages located above the tunnel routes.

Authorities said the sealing work is necessary to eliminate long-term environmental and geological risks. By permanently closing the tunnels, the government aims to prevent land instability, water leakage, and possible damage to local settlements. The operation is expected to improve safety in the area while ensuring that the abandoned project does not create future hazards.