Notwithstanding all other provisions of Chapters 1 and 2 of this part, appropriations will be made by the State, from time to time by law, to pay for the cost of cooperation on all flood control projects as required by the act of Congress approved December 22, 1944 (Public, Numbered 534, Seventy-eighth Congress, Second Session), and by the act of Congress approved August 18, 1941 (Public, Numbered 228, Seventy-seventh Congress, First Session), and which projects have by this part prior to September 22, 1951, been adopted and authorized for state assistance by the Legislature, and for which appropriations or allocation of funds have been made by the State prior to such date.