For long time, the river has be come one of the sources of human life. Opak river is in the Yogjakarta are, opak river crosses several area such as the Sleman and Bantul area.
Opak river the head waters of the opak river an empties into the hindia ocean with a length of about 65 km.
Opak river is apath for earthquake cracks earthquake cracks stretching the Kretek area to the Prambanan area.
Opak river strores alot of abundaht natural potential, such as the pit mining sand which is often by the community in the traditional way.
Other potential as atourist attraction and for raising fish, opak river used for agriculture in the presence of a dam called Tegal dam in Imogiri, and also the dam is used for tourist attractional.
Opal river empties on the beach side and where the ridal currents meet, with river water opposing each other, will become matrial and adeverting flow to the west.
January,2020.