The Gloster River is a river in the Marlborough

Marlborough, New Zealand

Marlborough is one of the regions of New Zealand, located in the northeast of the South Island. Marlborough is a unitary authority, both a region and a district, and its council is located at Blenheim. Marlborough is known for its dry climate, the picturesque Marlborough Sounds, and sauvignon blanc...

 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 on the northern slope of Dillon Cone in the Inland Kaikoura Range and flows north, then south-east and east to join the 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...

which eventually exits into the Pacific Ocean.

In 1888, the Gloster River formed a boundary between the counties of Marlborough and Kaikoura.