Jragung Dam in Central Java Nears 100% Completion

Jakarta, CNBC Indonesia – The Jragung Dam project in Central Java, being carried out by state-owned PT Waskita Karya (Persero) Tbk, is entering its final stages, with construction progress close to 100 per cent.

The reservoir’s initial filling, or impounding, was carried out in early September 2026, witnessed by Semarang Regent Ngesti Nugraha. This is one of the key stages in the dam’s construction.

Teams on site are now completing several finishing works, including the installation of riprap and turf to control erosion.

Waskita Karya Operations Director I Ari Asmoko said the company was committed to delivering water infrastructure that meets quality standards and provides significant benefits to the public. One benefit will be supplying water to an irrigation area covering 4,528 hectares in Demak and Grobogan regencies.

The company is thereby supporting the Asta Cita national self-reliance programme through food self-sufficiency. The cropping intensity index is projected to rise from 168 per cent to 275 per cent.

“As well as supporting food security, Jragung Dam will strengthen energy and water security. The dam has the potential to host a 1.4-megawatt micro-hydropower plant and a 90.2MW solar power plant, which are expected to support the development of renewable energy,” Ari said in an official statement on Sunday (8 November 2026).

With a storage capacity of 90 million cubic metres and an inundation area of around 451 hectares, Jragung Dam is also projected to help meet the raw-water needs of around 720,000 people by 2040. The dam is expected to contribute up to 93.76 per cent towards meeting clean-water needs in three regencies.

“Together with communities around the dam, we have helped create green public spaces planted with various fruit trees and productive species, with the potential to be developed into an agrotourism area. We hope this will directly add economic value for local residents through the management of village tourism,” Ari said.

He said the company remained ready to promote more evenly shared public prosperity through a range of construction projects, including water infrastructure, transport links and buildings.

Waskita Karya has been entrusted with Packages 1 and 4 of the Jragung Dam project. The project is part of 61 dams built by the government through the Ministry of Public Works during the 2015–2025 period.