Table 1: Improvement Timeline

2004 Replace two turbines, initiate Pacific Lamprey studies, replace all ten water intake gates and replace section of forebay racks for better fish passage
2005 Tunnel fish bypass modifications, replace two turbines
2006 Install gated opening (flow structure) at the most upstream point of the falls, replace two turbines, reduce salmon and steelhead predation by other fish and birds
2009 Minor modifications ,replace four turbines (two per year)
2010 Work completed, final assessment to determine if any additional improvements are needed