Digul

The Digul River (Dutch: Digoel) is a major river in southern Papua province, Indonesia, on the island of New Guinea. It is the fourth longest river in New Guinea after Sepik River, Fly River and Mamberamo River. With a total length of 853 km (530 mi) and has a drainage basin of 45,900 km2 (17,700 sq mi).[1]

Sungai Digul
Oewamba Rivier, Digoel-rivier, Oewimboe, Digoel Oewimboe, Digoel-Kian, Uwimbu, Digul
NASA Landsat image (enhanced) of the Digul Estuary, looking roughly east. Dolak can be seen towards the south.
Location of river mouth
Digul (Papua (province))
Native nameDigul River
Location
CountryIndonesia
ProvincePapua
Physical characteristics
SourceMaoke Mountains
  elevation12,000 ft (3,700 m)
Mouth 
  location
Arafura Sea
  coordinates
7°7′S 138°42′E
  elevation
0 ft (0 m)
Length853 km (530 mi)
Basin size45,900 km2 (17,700 sq mi)
Discharge 
  average4,000 m3/s (140,000 cu ft/s)
  maximum10,600 m3/s (370,000 cu ft/s)

History

The swamplands upstream were known by the name "Boven-Digoel" (Above the Digul, in Dutch) and hosted a penal colony at Tanahmerah (Red Earth) in the early 20th century, when Indonesia was a colony of Holland. As a result of the abortive 1926 revolt by the Communist Party of Indonesia (PKI), the Dutch exiled 823 of the most troublesome revolutionaries here.[2]

Hydrology

Rising on the southern slopes of Maoke Mountains, the Digul flows first south and then west to empty into the Arafura Sea. For much of its length it travels across a low region of extensive swamps and creates a delta near Dolak (Frederik Hendrik) Island. The river has a length of 853 km (530 mi) and is navigable as far as Tanahmerah.

Geography

Sungai Digul
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
464
 
 
25
19
 
 
396
 
 
22
20
 
 
342
 
 
23
22
 
 
346
 
 
24
23
 
 
249
 
 
24
21
 
 
178
 
 
22
18
 
 
28
 
 
22
20
 
 
51
 
 
24
21
 
 
93
 
 
25
22
 
 
235
 
 
25
23
 
 
336
 
 
25
21
 
 
355
 
 
25
23
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: [3]

The river flows in the southern area of Papua with predominantly tropical monsoon climate (designated as Am in the Köppen-Geiger climate classification).[4] The annual average temperature in the area is 22 °C. The warmest month is April, when the average temperature is around 24 °C, and the coldest is June, at 20 °C.[3] The average annual rainfall is 3072 mm. The wettest month is January, with an average of 464 mm rainfall, and the driest is July, with 28 mm rainfall.[5]

References

  1. Sungai Digul - Geonames.org.
  2. Brackman, A.C., Indonesian Communism: A History, 1963, Praeger Press
  3. "NASA Earth Observations Data Set Index". NASA. 30 January 2016.
  4. Peel, M C; Finlayson, B L; McMahon, T A (2007). "Updated world map of the Köppen-Geiger climate classification". Hydrology and Earth System Sciences. 11. doi:10.5194/hess-11-1633-2007.
  5. "NASA Earth Observations: Rainfall (1 month - TRMM)". NASA/Tropical Rainfall Monitoring Mission. 30 January 2016.
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