Abstract: In March of 2010 the US Army Corps of Engineers’ (USACE) awarded a contract to Voith Hydro to design and supply new turbine runners for installation at the Ice Harbor Lock and Dam located on the Lower Snake River within the State of Washington, USA. The contract included design and supply of both a fixed and an adjustable blade turbine runner for replacement of two failing units within the six unit powerhouse. The new turbine runners were to be designed for “safer” fish passage as a primary goal, and increased efficiency as a secondary goal. The hydraulic design of both runner types was a collaborative effort by the USACE’s Walla Walla District (NWW), Engineer Research and Development Center (ERDC), Hydroelectric Design Center (HDC), National Marine Fisheries Service (NMFS) and Voith Hydro. The design criteria and the design evaluation process were developed by the USACE over years of both field and laboratory research through the Turbine Survival Program. The two runner types were designed through an iterative process of Computational Fluid Dynamic Model analysis, performance model testing for power, efficiency and cavitation, and physical hydraulic model testing for evaluation of the turbine passage environment. This presentation provides a broad overview of the research, design criteria and guidelines, the design and evaluation process, and future biological field testing efforts supporting the Ice Harbor turbine runner replacement project.