Indonesia's Juwero and Katulampa Dams See Reduced Flow Amid Dry Season

In Kendal, Central Java, the Juwero Dam’s water discharge has fallen to about 9.6 cubic metres per second as the dry season peaks. The flow is split evenly between two main irrigation channels, each receiving roughly 4.8 m³/s, a level still higher than the extreme low of around 5 m³/s recorded five years ago. Operators say the reduced upstream supply limits any increase in flow, so water is being rationed among the districts of Ringinarum, Gemuh, Kangkung, Cepiring, Patebon and nearby Pegandon to keep irrigation for rice fields viable.

Meanwhile, at the Katulampa Dam on the Ciliwung River in Bogor, West Java, water levels have dropped by about 10 cm, exposing the riverbed and large stones. The decline, caused by a lack of rain in the upstream Puncak area since early July 2026, has created new open space that locals are using for fishing. Officials warn that the river can rise quickly if heavy rain returns, urging caution for those near the dam.

Both dams are experiencing lower water levels due to prolonged dry conditions and reduced upstream rainfall, prompting authorities to manage distribution carefully and monitor for rapid changes should the weather improve.