Many thanks to http://www.greymouthrotary.org.nz
The town is located at the mouth of the Grey River. It stands on narrow coastal plains close to the foot of the Southern Alps. In clear weather, Aoraki/Mount Cook can be clearly seen to the south from near the town. The mouth of the river divides the town into three areas: Blaketown, close to the river's mouth on the south bank; Karoro, to the southeast, separated from Blaketown by a series of small lakes; and Cobden, formerly a separate town, on the river's north bank.
It is on State Highway 6, which connects it with Hokitika in the south and Westport in the north. It also stands at the terminus of State Highway 7, which runs through Dobson and Reefton, eventually reaching north Canterbury and Christchurch via Lewis Pass.
The town's major industries include fishing, forestry, and ecotourism, the latter two of these industries holding an uneasy relationship with each other. The Pancake Rocks at Punakaiki, 45 km to the north are a popular local tourist attraction.
Greymouth has a history of coal and gold mining. When the gold industry started to decline, forestry became a new staple industry. Fishing has long been important to the town, despite the fact that the entrance to the Grey River has two notoriously dangerous sandbars.