Terrain
The terrain of Grande Terre consists of coastal plains, with mountains in the interior. The lowest point is the Pacific Ocean, with an elevation of 0 m, and the highest is Mont Panie, with an elevation of 1,628 m (5,341 ft).
The Diahot River is the longest river of New Caledonia, flowing for some 60 miles (100 kilometres). It has a catchment area of 620 square kilometres and opens north-westward into the Baie d'Harcourt, flowing towards the northern point of the island along the western escarpment of the Mount Panié.
As of 1993, 12% of New Caledonian land is used for permanent pasture, with 39% occupied by forests and woodland. As of 1991, 160 km2 (62 sq mi) of the land is irrigated. A current environmental issue is erosion caused by mining exploitation and forest fires.
Read more about this topic: Geography Of New Caledonia