South Otago's close association with Dunedin has increased since the reorganisation of local government areas in the 1980s. The northern part of South Otago, including much of the Taieri Plains, is now within the boundaries of Dunedin City (the rest of the area is almost entirely within Clutha District). The location of Dunedin International Airport at Momona is the area's most important transport hub, though most of the people who use this travel only briefly through South Otago while commuting to and from Dunedin. South Otago is also home to Lake Mahinerangi, Dunedin's most important reservoir, which is located close to the top of Maungatua.