The Gongseng Dam was constructed to enhance water resource management, support irrigation services, and strengthen food security in Bojonegoro Regency. Additionally, the dam plays a vital role in providing raw water for the surrounding community, while also contributing to flood mitigation and renewable energy potential. With the completion of its physical construction, an Operation & Maintenance (OP) Certification is required to ensure the dam can be fully operational and utilized efficiently.

The Gongseng Dam features a rock-fill structure with a vertical core, designed for long-term stability. It provides essential functions such as supplying irrigation water for 6,191 hectares of farmland, reducing flood risks by 176.44 m³/sec, generating microhydro power with a potential of 0.70 MW, and delivering 300 liters per second of raw water for domestic and industrial needs.

From a geological perspective, the dam is built on marl rock formations, requiring careful structural evaluation to ensure long-term stability and groundwater infiltration control. Given the potential for seismic activity, foundation reinforcement using grouting techniques is necessary to maintain structural integrity and prevent water seepage along fault zones.

Efficient operation of the Gongseng Dam depends on well-maintained hydromechanical equipment, which facilitates water discharge, regulation, and overall system performance. This includes gates, valves, and spillway control mechanisms, all of which require routine inspections and preventive maintenance to ensure optimal functionality. By integrating modern engineering solutions, proactive maintenance strategies, and regulatory compliance, the Gongseng Dam is positioned as a key water infrastructure asset, supporting regional development, water conservation, and disaster mitigation efforts.

📍 Key Specifications:

• Dam Type: Rock Fill with Vertical Core
• Main Dam Height: 34.00 m | Saddle Dam Height: 12.00 m
• Total Peak Length: 422.00 m
• Reservoir Capacity: 22.43 million m³ (Effective: 14.75 million m³, Dead Storage: 7.68 million m³)
• Inundation Area: 390.65 Ha | Water Catchment Area: 51.21 km²

Status: 100% Completed – OP Certification in Progress

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