The southern end of the lake drains into the nascent Clutha close to Albert Town, where it is met by its first main tributary, the Hawea River the outflow of Lake Wanaka's twin, Lake Hawea.
The southern end of the lake drains into the nascent Clutha close to Albert Town, where it is met by its first main tributary, the Cardrona River. It is also met here by the Hawea River the outflow of Lake Wanaka's twin, Lake Hawea.