Calbayog Pan-as–Hayiban Protected Landscape

The Calbayog Pan-as–Hayiban Protected Landscape, also known as the Calbayog Watershed, is a watershed and protected area located northwest of the city of Calbayog, Province of Samar in Oquendo District between Tinambacan District and San Isidro, Northern Samar in the Philippines. It is a mountainous region in the Tanaoan Ridge within the Mount Zamal Range that divides the three provinces of Samar. The protected area extends along the valley of the Hayiban River, the primary source of water for the Calbayog Water District. It consists of old-growth trees and a network of rivers, waterfalls, and streams capable of generating 2,279 liters of water per day. The area also includes Pan-as Falls and its surrounding landscape, which supplies hydroelectric power to the city. The area was declared a forest reserve in 1967 known as the Pan-as Falls–Hayiban Watershed Forest Reserve with a total area of 7,832 hectares (19, 350 acres). In 1998, through Proclamation No. 1158 issued by President Fidel Ramos, the watershed was reclassified as a protected landscape. It is one of four protected areas in the island of Samar.

NatureReserve data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).