In 2011, initial work was done in a project to stabilize the spillway slope, after they deteriorated to unsafe levels. 190,000 cubic metres of soil and rock were excavated to create safe working benches above the spillway, and work to support the rock, including rock bolting, shotcrete application and steel mesh installation will be completed by August 2012.
Other upgrades to the spillway include repairs to its lining, and modernizing its gate. Although still in their early stages, plans are being made to develop and use new technologies that will monitor and and analyze the dam.
Lastly, due to erosion and deterioration, the layer of large rocks, called rip-rap, along the upper slope of the dam will be replaced. B.C. Hydro is currently looking for quarry sites to get the rock from.
All of these projects are considered part of maintaining the long-term integrity of the dam.