The Dillon River is a river of the Marlborough 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...

. It arises in the Inland Kaikoura Range near Carters Saddle, and flows south-west for 28 kilometres to join with the upper Clarence River

Clarence River, New Zealand

Clarence River is located on South Island of New Zealand. It is 160 kilometres long.For its first 50 kilometres, the river runs in a generally southeastern direction. It then turns northeast, running down a long straight valley between the Inland and Seaward Kaikoura Ranges...

 20 kilometres northeast of Hanmer Springs

Hanmer Springs

Hanmer Springs is a small town in the Canterbury region of the South Island of New Zealand. It is located 65 kilometres southwest of Kaikoura , in the Hurunui District. The town lies on a minor road 9 kilometres north of State Highway 7, the northern route between Christchurch and the West Coast...

. The river's course lies largely parallel with that of the Acheron River

Acheron River

The Acheron River is a river in the South Island of New Zealand, in Marlborough and flows into the Clarence River. It flows southwest and then east for a total of 60 kilometres, joining the Clarence at the southern end of the Inland Kaikoura mountains....

, which lies eight kilometres to the west. The river was named after Constantine Augustus Dillon, who owned a sheep run near the Omaka River

Omaka River

The Omaka River is a river of the Marlborough Region of New Zealand's South Island. It flows north from the slopes of Mount Horrible 30 kilometres west of Seddon, reachin the Opawa River at the eastern end of Renwick.-References:...

.