Darlington Dam, also referred to as Lake Mentz. is a gravity type dam situated in the Sundays River, near Kirkwood, in Eastern Cape, South Africa. It was completed in 1922 and only filled by 1928, the delay a result of extensive drought. The impoundment now has a capacity of 187,000,000 cubic metres (6.6×109 cu ft), with a 35.3 metres (116 ft)-high wall. Its primary purpose is for irrigation, industrial and domestic use.