Ongpocheon

Originating from the southern slope of Nuun Oreum, Ongpocheon splits into two branches at Garincheon before merging once more along the Yangmuncheon section in Jungdong Village, eventually flowing into the Ongpo coast. As the largest source of spring water in the western region of Jeju, its abundant supply of groundwater and surface water serves as a vital water source for the western part of Jeju City via the Hallim Water Purification Plant.