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Purari River

Summary

The Purari (also known as Puraari) is a river that originates in the south central highlands especially in Kandep District of Enga Province of Papua New Guinea, flowing 630 kilometres (391 mi)[5] though Gulf Province to the Gulf of Papua. The Purari has a 33,670 km2 (13,000 sq mi)[6] drainage basin and is the third largest river in Papua New Guinea. The discharge varies through the year, averaging around 3,000 m3/s (110,000 cu ft/s)–4,000 m3/s (140,000 cu ft/s) at the delta.

Purari
The mouths of the Purari
Location of the Purari
Location
CountryPapua New Guinea
RegionGulf
Physical characteristics
Source 
 • locationPapua New Guinea
 • coordinates6°24′S 144°15′E / 6.400°S 144.250°E / -6.400; 144.250
 • elevation1,240 m (4,070 ft)
Mouth 
 • location
Gulf of Papua, Papua New Guinea
Length630 km (390 mi)[1]
Basin size33,670 km2 (13,000 sq mi)[2]
Discharge 
 • locationWabo Creek (Basin size: 28,738 km2 (11,096 sq mi)[3]
 • average2,360 m3/s (83,000 cu ft/s)[4] 2,667 m3/s (94,200 cu ft/s)
 • maximum6,000 m3/s (210,000 cu ft/s)
Discharge 
 • locationPurari Delta, Gulf of Papua
 • average105 km3/a (3,300 m3/s)

History edit

The headwaters of the river were charted in 1930 by Michael Leahy and Michael Dwyer.[7]

Geography edit

It is fed mainly by the Kaugel, Erave, Lai,[8] Tua and Pio rivers, starting just south of Mount Karimui at the junction of the Tua and Pio rivers, where it flows through a quite spectacular gorge before flowing out into the lowlands and delta country closer to the coast. River becomes tidal at substantial distance from the waters of Gulf of Papua. The Purari is a heavy muddy brown from silts washed down from the mountains, and rises and falls constantly depending on local rainfall.

Delta edit

The Purari Delta is one of a number of large deltaic complexes which border the Gulf of Papua. Along with the Fly, the Kikori and many other rivers, the Purari drains the western and central highland region of Papua New Guinea. Upper sections of these rivers are located in highly mountainous terrain reaching 4,510 metres or 14,800 feet at Mt. Wilhelm, with steeply descending valleys debouching onto a deltaic plain 30 to 50 kilometres (19 to 31 mi) wide. Average annual rainfalls ranging from 2,000 to 8,500 millimetres (80 to 330 in) in the catchment of the Purari result in a mean annual discharge at delta of about 105 km3/a (3,300 m3/s), carrying 88.6 million m3/year of sediment into the delta (Pickup 1980; this volume). These inputs provide the material for a major deltaic complex of global significance.

Tributary edit

Purari River List of Tributaries by length.

  • Waghi River 243 km (151 mi)
  • Erave River 223.6 km (138.9 mi)
  • Tua River 200 km (120 mi)
  • Kaugel River 112.6 km (70.0 mi)
  • Zogi River 76 km (47 mi)

Biodiversity edit

The general area is heavy tropical jungle with high rainfall and abundant bird life.[9]

Economy edit

Along the river in various places there are small human populations, mostly subsistence villages. Dugout canoes are seen along the river from Wabo downstream, however population is sparse until you get closer to the coast where there are a few more villages.

Hydroelectric plant edit

The governments of Papua New Guinea and Government of Queensland have signed a Memorandum of Cooperation with PNG Energy Developments Ltd (PNG EDL) and Origin Energy (Origin) to support the potential development of a renewable hydro electricity project based on the Purari (Wabo Dam).[10]

See also edit

References edit

  1. ^ T., Petr (6 December 2012). The Purari — tropical environment of a high rainfall river basin. ISBN 9789400972636.
  2. ^ T., Petr (6 December 2012). The Purari — tropical environment of a high rainfall river basin. ISBN 9789400972636.
  3. ^ Godfrey, Agoro. "08 Papua New Guinea-2".
  4. ^ T., Petr (6 December 2012). The Purari — tropical environment of a high rainfall river basin. ISBN 9789400972636.
  5. ^ T., Petr (6 December 2012). The Purari — tropical environment of a high rainfall river basin. ISBN 9789400972636.
  6. ^ T., Petr (6 December 2012). The Purari — tropical environment of a high rainfall river basin. ISBN 9789400972636.
  7. ^ Ian J. Willis An Epic Journey: The 1930 Expedition of Michael Leahy and Michael Dwyer Across New Guinea Via the Purari River University of Papua New Guinea, 1969 - Papua New Guinea - 145 pages
  8. ^ Meggitt, M. J. (1956). "The Valleys of the Upper Wage and Lai Rivers, Western Highlands, New Guinea". Oceania. 27 (2): 90–135. doi:10.1002/j.1834-4461.1956.tb00698.x. JSTOR 40373048.
  9. ^ T. Petr The Purari — tropical environment of a high rainfall river basin: Tropical Environment of a High Rainfall River Basin Volume 51 of Monographiae Biologicae Springer Science & Business Media, Dec 6, 2012 - Science - 622 pages ISBN 9400972636 ISBN 9789400972636
  10. ^ "PNG and Qld Governments support studies to progress a PNG renewable energy project for PNG and Qld". Media Release. Origin Energy. 15 September 2010. Retrieved 1 October 2010.

External links edit

  • Pawitan, Hidayat; Jayawardena, A.W.; Takeuchi, K.; Lee, Soontak (2000). "Papua New Guinea: Purari Wara" (PDF). Catalogue of rivers for Southeast Asia and the Pacific, vol. III. UNESCO-IHP Regional Steering Committee for Southeast Asia and the Pacific. pp. 228–238. ISBN 4-9900653-0-1.