Transports for Lake Superior were obtained by using a depth-integrated model applied to a 6¿6 km grid. These results were used to explain the movement of red clay plumes in extreme western Lake Superior. For northeasterly winds the calculated transports and Landsat data on turbidity show that the plumes originating along the Wisconsin shore move toward Minnesota Point and are than taken out along the axis of the arm of the lake because of a return path produced by currents along the Minnesota and Wisconsin shores converging at Minnesota Point. The results from the model also account for the migration of taconite tailings along the Minnesota shore from Silver Bay to the Duluth water intake.