Mengkuang Dam is a dam located less than 28 km to the north-east of Butterworth in Malaysia. It is the only dam situated in Seberang Perai (Penang Mainland) and the second dam built in Penang after Ayer Itam dam. It was officially opened by the former Governor, Dr. Tun Awang bin Hassan in 1985. It has the water catchment area of 3.9sq km and a gross storage capacity of 23.6 billion litres makes it the largest dam in Penang, almost 10 times the capacity of the Air Itam Dam. Mengkuang Dam will be closed to the public from August 1, 2011 until July 31, 2016 for enlargement and renovation. The US$200 million enlargement includes increasing the height of the dam by 11m and its length 1.7km to the west. A new intake and spillway will also be added.