The term "oxbow lake" is widely used to refer to a U-shaped meander in a river, sometimes cut off from the modern course of the river that formed it.
Following the collapse of a dredging wall near the confluence of the South Pine and North Pine Rivers in the mid 1980s, the length of the South Pine River was shortened by almost 1.5 km. During floods following that event the character of river further upstream has been significantly altered by erosion events. The river is now actively eroding/meandering in many reaches. Erosion rates of 2.5 metres to 3.5 metres per year are continuing.
Between 2002 and 2009 the meander was breached South of this cache with the main stream eventually flowing along the edge of Pine Rivers Park by 2010.