Email Record: Umpqua River and tributaries, Oregon. Letter from the Secretary of War transmitting a letter from the Chief of Engineers, United States Army, dated March 19, 1940, submitting a report, together with accompanying papers and an illustration, on a preliminary examination and survey of Umpqua River and tributaries, Oregon, authorized by the Flood Control Act approved June 22, 1936, and by act of Congress approved June 11, 1935.