Lake Murray is the largest lake in Papua New Guinea. It is located in the Middle Fly District, Western Province at 7°00′S 141°30′E / 7°S 141.5°E / -7; 141.5, which covers approximately 647 km² and in the wet season increases to five times the size. It has a highly convoluted shoreline more than 2000 km long. The lake has been a source of nourishment for many of the local peoples. Freshwater sawfish have been caught in its shallow waters to feed the crocodiles in a freshwater crocodile farming operation.