Email Record: Letter from the Secretary of the Army transmitting a letter from the Chief of Engineers, Department of the Army, dated March 16, 1954, submitting an interim report, together with accompanying papers and illustrations, on a survey of Tanana River Basin, Alaska. This report is submitted under the authority for a preliminary examination and survey of harbors and rivers in Alaska, with a view to determining the advisability of improvements in the interest of navigation, flood control, hydroelectric power, and related water uses, authorized by the Flood Control Act approved on June 30, 1948. It is also submitted in final response to a preliminary examination and survey of Chena Slough, Alaska, authorized by the Flood Control Act approved on July 24, 1946.