Compiled by General G.K. Warren of the early Army Corps of Engineers, this document is the final report on a survey of the Minnesota River authorized by Congress to determine the river's navigability. Part I consists of an account of river surveys conducted by Warren in 1866 and 1867, along with a listing of various other sources of information such as reports by Long, Featehrstonhaugh, Nicollet, and Carver. Part II discusses important physical features of the Minnesota River, including its oversized valley.
