The Potts River is a river of the Canterbury Region of New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

's South Island

South Island

The South Island is the larger of the two major islands of New Zealand, the other being the more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman Sea, to the south and east by the Pacific Ocean...

. It flows generally south from the southern end of the Arrowsmith Range

Arrowsmith Range

The Arrowsmith Range is a mountain range in the South Island of New Zealand.The range runs from southwest to northeast, parallel to the main ranges of the Southern Alps. At the northeastern end, the range terminates at Jagged Peak from whence a ridge connects to the Jollie Range. The lower Potts...

 through a steep-sided valley between the Potts Range to the west and the Big Hill Range to the east.

At the end of these ranges the river veers southwest, meeting the upper reaches of the Rangitata River

Rangitata River

The Rangitata River is one of the braided rivers that helped form the Canterbury Plains in southern New Zealand. It flows southeast for 120 kilometres from the Southern Alps, entering the Pacific Ocean 30 kilometres northeast of Timaru...

 five kilometres north of Mesopotamia Station.