Jlantah Dam Karanganyar — Engineering & Supervision by PT. WECON
Project Details
The Jlantah Dam located in Karanganyar Regency, Central Java, is a key strategic water infrastructure project supporting regional water and agricultural resilience.
Featuring a structure height of 70 meters and an effective storage capacity of 10.97 million cubic meters (m³), the dam is designed for multi-purpose benefits including farmland irrigation, municipal raw water supply, and micro-hydro power potential.
Technical Specifications Matrix
| Parameter | Specification Details | |---|---| | Structure Type | Zonal Clay-Core Earthfill Dam | | Dam Height | 70 meters from foundation | | Crest Length | 434 meters | | Storage Capacity | 10.97 million cubic meters (m³) | | Irrigation Supply | Serves 1,494 hectares of agricultural land | | Raw Water Supply | 150 liters per second for municipal supply | | Client / Authority | Ministry of PUPR — BBWS Bengawan Solo | | WECON Role | DED Planning, Hydrological Modeling, & Construction Supervision |
Key Role & Regulatory Compliance
PT. WECON led the Detailed Engineering Design (DED) phase, cofferdam hydraulic flow modeling, and site quality control supervision.
Technical compliance aligned with Indonesian Dam Construction Permitting Services standards and River Diversion Permitting Services during initial river closure.
"PT. WECON contributed from early planning through construction supervision for this 70m high earthfill dam, ensuring structural integrity for a 10.97 million m³ reservoir."
Gani Abdurrahman
Director, PT Wecon
