The National Irrigation Administration (NIA; ) is a government-owned and controlled corporation of the Philippine government responsible for irrigation development and management in the Philippines.[2]
History
NIA was created under Republic Act (RA) 3601, signed by President Diosdado Macapagal on June 22, 1963.[3][4] Its charter was amended by Presidential Decree (PD) 552 signed by President Ferdinand Marcos on September 11, 1974, and PD 1702 on July 17, 1980. Both increased capitalization and broadened the agency's authority.[5][6]
NIA's forerunner was the Irrigation Division of the defunct Bureau of Public Works.