The Mungo River is a river of the West Coast 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...

. The major source of the Hokitika River

Hokitika River

The Hokitika River is in the West Coast of the South Island of New Zealand. It is about long, beginning in the Southern Alps and flowing into the Tasman Sea next to the town of Hokitika. The Hokitika River, and its eastern tributary, the Kokatahi River, have formed the Kowhitirangi-Kokatahi...

, it flows generally west from the Southern Alps

Southern Alps

The Southern Alps is a mountain range extending along much of the length of New Zealand's South Island, reaching its greatest elevations near the island's western side...

, becoming the Hokitika River at the point where it turns north as it flows through a gap in the Diedrich Range. The Hokitika Saddle separates the headwaters of the Mungo from those of the Rakaia River

Rakaia River

The Rakaia River is in the Canterbury Plains in New Zealand's South Island. The Rakaia River is one of the largest braided rivers in New Zealand...

system which flows to the island's east coast.