The dam expansion project increased its maximum storage capacity from 22 million cubic meters to 86.4 million cubic meters.
It is managed by Perbadanan Bekalan Air Pulau Pinang (PBAPP), the state's licensed water supply operator.
The reservoir acts as a 'strategic drought reserve' designed to ensure water security during prolonged dry spells.
The perimeter around the dam offers a dedicated track used for endurance training and marathon preparation.
The site is a major component of the Mengkuang Dam Expansion Project (MDEP), which concluded in 2020.
The dam structure is an earth-fill embankment type rather than a concrete arch dam.
Mengkuang Dam is the largest water storage facility in Penang, serving as a critical strategic drought reserve for the state. The site features a 2.8-kilometer-long dam embankment and an extensive reservoir designed to support the water supply needs of the Penang Water Supply Corporation (PBAPP). The area is surrounded by landscaped parklands, which are utilized by the local public for outdoor fitness and recreational activities. It functions as a managed water infrastructure site, with significant portions of the land dedicated to flood mitigation and water resource security. The facility underwent an extensive expansion project completed in recent years to increase its raw water storage capacity to 86.4 billion liters. It sits at the foothills of the central mountain range in Bukit Mertajam, offering panoramic views of the water body and the surrounding forest reserves. The site remains a primary source of water supply for the Seberang Perai region.
The crest of the dam wall overlooking the vast reservoir and the hilly landscape in the distance.
Bring your own hydration, as there are limited commercial facilities within the immediate vicinity of the reservoir.
Visit during the early morning to avoid peak heat, as there is limited shade along the exposed embankment path.
Apply high-SPF sunscreen as the reservoir area is fully exposed to direct sunlight.
Do not attempt to swim or fish in the reservoir as it is a strictly regulated water supply zone; stay off the restricted embankment slopes.
Maintain cleanliness to protect the water source, follow designated paths, and avoid unauthorized water entry or fishing.
