Located in Batam City, Duriangkang Dam plays an essential role in providing clean water in the area, also being the first and largest estuary dam in Indonesia. However, with a total effective water…
Surabaya river is one of the branches of Brantas River, the longest river is East Java Province. It has a length of 42,3 km and watershed area about 631 km2. For years, Surabaya rivers has been sev…