60 STAT.] 79TH OONG. , 2D SESS.-CH. 596-JULY 24, 1946 to and shall retain, during the will of the President, the position and office held by him as a member of the Mississippi River Commission, without prejudice to his status as a retired Army officer, and, in addition to his authorized Army retired pay, shall receive from the Mississippi flood control funds the difference between the authorized salary of a member of the Mississippi River Commission and the Army retired pay received by him. (s) To facilitate the inspection, supervision, and conduct of flood fighting, flood control, and navigation operations, the president of the Mississippi River Commission is hereby authorized, notwithstand- ing any other provision of law, to purchase, maintain, and operate an amphibian airplane from any appropriations heretofore or here- after made for flood control: Provided, That the cost of such airplane shall not exceed $120,000. In order to provide for the increased costs of construction of the authorized project for the Lower Mississippi River as recommended by the president of the Mississippi River Commission and the Chief of Engineers, the authorization for flood control and improvement of the Lower Mississippi River is hereby increased by an additional $100,000,000. The project for flood control along Lake Pontchartrain in Jefferson Parish, Louisiana, is hereby authorized substantially in accordance with the recommendations of the Chief of Engineers in House Docu- ment Numbered 691, Seventy-ninth Congress, second session, at an estimated cost of $900,000. The project for flood protection at Memphis on Wolf River and Nonconnah Creek, Tennessee, authorized by the Act approved August 28, 1937 (Public, Numbered 406, Seventy-ffth Congress), as amended by the Act approved June 28, 1939 (Public, Numbered 154, Seventy- sixth Congress), is further amended to authorize the completion of the project at an additional estimated cost of $1,500,000. RED-OUACHIrA RIVER BASIN The project for flood protection on Bayou Pierre in the vicinity of Shreveport, Louisiana, is hereby authorized substantially in accord- ance with the recommendations of the Chief of Engineers in House Document Numbered 285, Seventy-ninth Congress, first session, at an estimated cost of $127,000. The general plan for flood control on Red River, Texas, Oklahoma, Arkansas, and Louisiana, below Denison Dam, Texas and Oklahoma, including the incorporation therein of the several separate existing projects for flood control along the Red River below Denison (above the jurisdiction of the Mississippi River Commission) and provid- ing for the modification of the existing or authorized Federal and non-Federal levees, is hereby authorized substantially in accordance with the recommendations of the Chief of Engineers in House Docu- ment Numbered 602, Seventy-ninth Congress, second session, at an estimated cost of $77,500,000. ARKANSAS RIVER BASIN In addition to previous authorizations, there is hereby authorized to be appropriated the sum of $40,000,000 for the prosecution of the comprehensive plan for the Arkansas River Basin, approved in the Act of June 28, 1938, as amended and supplemented by subsequent Acts of Congress. The Chief of Engineers is authorized to provide in the Canton Reservoir on the North Canadian River sixty-nine thousand acre-feet of irrigation storage, upon the condition that when siltation of the 647 Pay. Purchase of amphib. ian airplane. Restriction. Increased authoriza- tion for costs of con- struction. Jefferson Parish, La Memphis, Tenn. 50 Stat. 881 . Post, p. 652. 53 Stat. 860. Shreveport, La. Red River. Additional appro- priation authorized. 52 Stat. 1215 . 33U.S.C.§70lbd sq.; Supp. V, I 701b Canton Reservoir.