Inch Clutha is a large, flat island sitting in the delta between the Matau (northern) and Koau (southern) branches of the Clutha River, downstream from the town of Balclutha in the South Island of New Zealand.
The island was formed in 1878 after a massive flood changed the course of the Clutha, which had formerly reached the ocean 4 km to the south at Port Molyneux.
The southwestern shore of the island, along the Koau branch, includes several small oxbow lakes – in the north, close to Finegand, and also some 3 km from the Pacific coast.
In the largest of these, a 3500 m loop of river bends back on itself to create a neck of farmland only some 120 metres wide.
At the southern end of the island, a channel links the two branches, separating Inch Clutha from a smaller broad, low-lying barrier islet sitting between it and the Pacific coast.