Testing is performed on a 1 to 25 scale model of the turbine, constructed specifically for testing purposes. One round of testing is done by the turbine manufacturer, in Ice Harbor’s case, Voith Hydro, who checks to see if the turbine operates well from a power generation standpoint. Next, the model is shipped to Vicksburg Mississippi, where the Engineering Research and Development Center (ERDC), conducts their own round of testing to see how the turbine operates from a fish passage standpoint.