While the repaired turbine was operating, the Corps of Engineers and contractors tried to determine how to correct the issues at Stockton Dam. Analysis concluded that the original turbine was likely rated for a much different site due to its ability to spin at nearly full power without tilting the blades past their "full flat" setting. Why the turbine and generator were mismatched has not been determined. Due to the significant issues and age of the turbine, an entirely new one was custom designed for replacement in 2014-2015. Upgrades for the $48 million project include: