Email Record: Snake River and tributaries. Letter from the Secretary of War transmitting pursuant to section 1 of the River and Harbor Act approved January 21, 1927, a letter from the Chief of Engineers, United States Army, dated December 15, 1933, submitting a report, together with accompanying papers and illustrations, on Snake River and tributaries, for the purposes of navigation and efficient development of its water power, the control of floods, and the needs of irrigation.