Meadow Valley Wash and lower Muddy River, Nev. Letter from the Secretary of the Army transmitting a letter from the Chief of Engineers, United States Army, dated September 12, 1949, submitting an interim report, together with accompanying papers and illustrations, on a survey of Meadow Valley Wash and lower Muddy River, Nev. This interim report is submitted under the authority for a preliminary examination and survey of Virgin River and tributaries, in Nevada, Arizona, and Utah, authorized by the Flood Control Act approved on June 28, 1938.