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Jragung Dam in Central Java Nears Completion
The Jragung Dam in Central Java is nearly complete, with construction progress approaching 100%.
Waskita Karya is carrying out the project, and crews are finishing work including erosion-control measures.
The reservoir began its initial filling in September 2026, an important step in the dam’s construction.
The dam is expected to supply irrigation to 4,528 hectares in Demak and Grobogan, supporting farming in the two districts.
Officials project the planting index will rise from 168% to 275%, allowing more planting over time.
With storage capacity of 90 million cubic metres, the dam is also expected to help meet water needs for about 720,000 people by 2040.
Its planned water and energy benefits include renewable power potential, with capacity estimated at 1.4 megawatts from micro-hydro and 90.2 megawatts from solar; crews are completing final work.
The Jragung Dam project in Central Java is nearing completion, with construction progress close to 100%.
Initial filling of the reservoir began in early September 2026.
Crews are completing final work, including installing riprap and grass sod to control erosion.
The dam is expected to supply irrigation water to 4,528 hectares in Demak and Grobogan regencies.
It is also projected to provide raw water for about 720,000 people by 2040 and has potential for hydro and solar power.
- Who
- PT Waskita Karya is building the dam. The project is being carried out for the government through the Ministry of Public Works.
- What
- The Jragung Dam project is nearing completion, with construction progress close to 100%.
- When
- The report was published on November 8, 2026. Initial reservoir filling began in early September 2026.
- Where
- Central Java, Indonesia.
- Why
- The dam is intended to support irrigation, water supply and renewable energy, among other benefits.
This story does not have two clearly opposing sides.
Initial filling of the Jragung Dam reservoir began, witnessed by Semarang Regent Ngesti Nugraha.
Waskita Karya reported that construction was nearing completion and crews were finishing final work.
- Construction progress
- Close to 100%
- Irrigation area
- 4,528 hectares in Demak and Grobogan regencies
- Reservoir capacity
- 90 million cubic metres
- Reservoir area
- About 451 hectares
- Projected raw-water beneficiaries
- About 720,000 people by 2040
- Power potential
- 1.4 megawatts of micro-hydro and 90.2 megawatts of solar power
What people are saying
Besides supporting food security, Jragung Dam also promotes energy and water security.
The dam has the potential for a 1.4-megawatt micro-hydro power plant and 90.2 megawatts of solar power, which is expected to support the development of renewable energy.