River in Papua New Guinea
The Fly River is the third longest river within the island of New Guinea, after the Sepik River and Mamberamo River with a complete size of 1,060 km (660 mi) and the most important by quantity of discharge in Oceania, the most important on this planet with out a single dam in its catchment, and total the 25th-largest major river on this planet by discharge quantity. It’s situated within the southwest of Papua New Guinea and Papua Province of Indonesia.  It rises within the Victor Emanuel Vary arm of the Star Mountains, and crosses the south-western lowlands earlier than flowing into the Gulf of Papua in a big delta.
The Fly-Strickland River system has a complete size of 1,220 km (760 mi).
The Fly flows principally by means of the Western Province of Papua New Guinea and for a small stretch, it varieties the worldwide boundary with western New Guinea. This part protrudes barely to the west of the 141°E longitude line. To compensate for this slight achieve in territory for Papua New Guinea, the border south of the Fly River is barely east of the 141°E longitude line. As a part of this deal, Indonesia has the suitable to make use of the Fly River to its mouth for navigation.
The principal tributaries of the Fly are the Strickland and the Okay Tedi.
Near its mouth, the move of the Fly River encounters a tidal bore, the place an incoming excessive tide pushes water upstream till the tide modifications. The vary of this tidal bore remains to be undocumented.
The delta of the Fly River is over 100 km huge at its entrance, however solely 11 km huge on the apex upstream of Kiwai Island. The delta incorporates Three predominant distributary channels (the Southern, Northern, and Far Northern Entrances) that department from a standard level (the “apex”). The distributary channels are 5 to 15m in depth, separated by elongate, sand-mud islands which are stabilised by lush mangrove vegetation. The islands are eroded and rebuilt quickly within the apex space, the place they’ve lateral migration charges of as much as 150 m/a, with slower charges for the extra seaward islands. Upstream from the apex the river progressively narrows to a width of 1.6 km or much less. The Fly Delta reveals a particular funnel form in plan view, testifying to the elemental position of tidal currents in shaping the Delta’s geomorphology. Imply spring tidal ranges are amplified throughout the delta, from round 3.5m on the seaward entrance of the distributary channels, reaching a peak of about 5m on the delta apex. Seismic profiles and radiometrically dated core samples point out that the delta is prograding seawards at a median price of about 6 m/a 
The Fly Delta is taken into account as a world “kind case” of a tide-dominated delta and the patterns of sedimentation seen within the Delta at the moment have been studied by sedimentary geologists as a mannequin for decoding the traditional rock file 
The river delta is studded with low and swampy islands lined with mangrove and nipa palm, with villages and cultivated areas on these islands. The land on either side of the estuary is of the identical character. The islands within the estuary are flat and lined with
thick, fertile alluvial soil. The most important islands are Kiwai Island, Purutu Island, Wabuda Island, Aibinio Island, Mibu Island, and Domori Island. Kiwai, Wabuda and Domori are inhabited.
A listing of the river delta islands is:
The inhabitants of the Fly River delta interact in agriculture and looking. Coconut palm, breadfruit, plantain, sago palm, and sugar cane are grown.
Fly River Turtle
The Fly River turtle, also referred to as the Pig-Nosed turtle as a result of its odd nostril, are notably completely different from different turtles as a result of their piglike nostril. The one freshwater turtle to have flippers, the turtle is understood to not often depart water, besides in dire circumstances. They’re additionally recognized to be omnivores whom not often devour meat.
The Fly was first found by Europeans in 1845 when Francis Blackwood, commanding the corvette HMS Fly, surveyed the western coast of the Gulf of Papua. The river was named after his ship and he proclaimed that it could be potential for a small steam-powered boat to journey up the mighty river.
In 1876, Italian explorer, Luigi D’Albertis, was the primary particular person to efficiently try this when he travelled 900 km into the inside of New Guinea, in his steamer, Neva. It was the furthest any European explorer had ever been into the island.
Each the Strickland and the Okay Tedi Rivers have been the supply of environmental controversy as a result of tailings waste from the Porgera Mine and the Okay Tedi Mine, respectively. Sediment sampling and coring within the distributary channels of the Fly Delta had not detected copper concentrations considerably increased than background as of 1994. In 2008, Dr Ian Campbell, a former advisor to Okay Tedi Mining Restricted, claimed that firm knowledge recommend vital parts of the Fly River floodplain are at a excessive danger from acid mine drainage.
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- Harris, P.T., Hughes, M.G., Baker, E.Okay., Dalrymple, R.W., Keene, J.B., 2004. Sediment transport in distributary channels and its export to the pro-deltaic atmosphere in a tidally-dominated delta: Fly River, Papua New Guinea. Continental Shelf Analysis 24, 2431-2454.
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- “PNG warned of environmental mining catastrophe”. ABC Information. Australian Broadcasting Company. 2008-09-06. Retrieved 2008-01-06.