Diversion of Water from the Great Lakes and Niagara River. Letter from the Secretary of War Transmitting with a Letter from the Chief of Engineers, Reports by Col. J. G. Warren, Corps of Engineers, and the Board of Engineers for Rivers and Harbors, of an Investigation of the Subject of Water Diversion from the Great Lakes and the Niagara River, Including Navigation, Sanitary, and Power Purposes, and the Preservation of the Scenic Beauty of Niagara Falls and the Rapids of Niagara River.