09/14/1964
https://www.presidency.ucsb.edu...
"The heads of the executive agencies shall provide leadership in encouraging a broad and unified effort to prevent uneconomic uses and development of the Nation's flood plains and, in particular, to le..."
"Requests for flood hazard information may be addressed to the Secretary of the Army or, in the case of lands lying in the basin of the Tennessee River, to the Tennessee Valley Authority."
"All executive agencies directly responsible for the construction of Federal buildings, structures, roads, or other facilities shall evaluate flood hazards when planning the location of new facilities ..."
"I am requesting the appropriate Federal agencies to study these proposals and make recommendations to me for later submission to the Congress."