Waduk Sermo

Waduk Sermo is an artificial reservoir located in Hargowilis, Kokap, Kulon Progo Regency, Special Region of Yogyakarta, Indonesia. Constructed between 1994 and 1996, it serves irrigation, raw water supply and flood control for the region. Surrounded by forested Menoreh Hills, the 157-hectare lake is a popular recreational site offering scenic views, boating and fishing. It is known for its calm waters, hilltop viewpoints and proximity to Kalibiru ecotourism area.

Visitors can expect a large, calm reservoir surrounded by green Menoreh Hills with paved lakeside areas, gazebos and hilltop viewpoints. The site offers views of the water and forested slopes, boat rides on the lake, fishing spots, and photo spots along the dam and shoreline. Facilities include parking, food stalls, toilets and small mosques. The atmosphere is quiet on weekdays and busier on weekends, with opportunities for picnicking, cycling around the reservoir road and watching sunset from higher viewpoints.