Email Record: Potomac River and tributaries including Occoquan Creek. 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 April 22, 1932, submitting a report, together with accompanying papers and illustrations, containing a general plan for the improvement of the Potomac River and tributaries, including Occoquan Creek, for the purposes of navigation and efficient development of its water-power, the control of floods, and the needs of irrigation.