The Lower Agno reservation was established on November 22, 1983 as part of the creation of the third dam, the San Roque Dam (Agno V). An initial of the Cordillera Central Forest Reserve was set aside for water resource protection and conservation by the Ministry of Natural Resources-Bureau of Forest Development, with reserved for the multi-purpose dam project of the National Power Corporation approved by President Ferdinand Marcos on May 5, 1981. The San Roque Dam eventually began construction in 1998 and was completed on May 1, 2003.