Truckee River and tributaries, California and Nevada. Letter from the Secretary of the Army transmitting a letter from the Chief of Engineers, Department of the Army, dated April 15, 1954, submitting an interim report, together with accompanying papers and an illustration, on a survey of Truckee River and tributaries, California and Nevada, covering only the immediate flood problems on Truckee River. This report is submitted under the authority for a preliminary examination and survey of Truckee River and tributaries, in California and Nevada, authorized by the Flood Control Act approved on June 28, 1938.