The construction of the Dam had great economic and social impact on the lives of Pantabangeños. About of productive farmland and the town center (East and West Poblacion) along with seven outlying barangays (Villarica, Liberty, Cadaclan, San Juan, Napon-Napon, Marikit and Conversion) were submerged under the new lake. Residents were relocated to higher ground overlooking the vast reservoir, which became the new Pantabangan town center. Before the expansion of the dam through the Casecnan Project in the 1990s, the belfry of the 18th century church resurfaced from the dam's summer low water level. During drought in 1983, some areas of the old town emerged.