| Ogan River Sungai Ogan, Air Ogan, Aek Ogan | |
|---|---|
  Location of river mouth Show map of Sumatra Ogan River (Indonesia) Show map of Indonesia | |
| Location | |
| Country | Indonesia |
| Physical characteristics | |
| Source | Lake Ranau,Barisan Mountains |
| • location | South Ogan Komering Ulu Regency |
| • coordinates | 4°52′03″S103°55′56″E / 4.8674°S 103.93226°E /-4.8674; 103.93226 |
| • elevation | 550 m (1,800 ft) |
| Mouth | Musi River (Indonesia) |
• location | Kertapati,Palembang |
• coordinates | 3°00′47″S104°45′01″E / 3.013011°S 104.750270°E /-3.013011; 104.750270 |
| Basin features | |
| River system | Musi basin |
TheOgan River is a river inSouth Sumatra, Indonesia.[1] It is a tributary of theMusi River in SouthernSumatra. Flowing entirely in theSouth Sumatra province, it rises inBarisan Mountains (Bukit Barisan) and meanders slowly eastwards to join the Musi at Kertapati,Palembang.[2] The Ogan ranks as the third longest river in South Sumatra (behind Musi and Komering). The river either borders or flows through the regencies ofSouth OKU,OKU,OKI, andOgan Ilir.
The Ogan and Pegagan tribes lived along the Ogan and its tributaries. Most were peasant or merchant. The river served first as vital transportation artery and communications link. Formed from thick layers of this river's silt deposits, the Ogan River Valley is one of the most fertile agricultural regions of the province.
The river flows in the southern area ofSumatra with predominantlytropical rainforest climate (designated asAf in theKöppen–Geiger climate classification).[3] The annual average temperature in the area is 24 °C. The warmest month is October, when the average temperature is around 26 °C, and the coldest is January, at 22 °C.[4] The average annual rainfall is 2902 mm. The wettest month is November, with an average of 435 mm rainfall, and the driest is August, with 83 mm rainfall.[5]
| Ogan River | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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3°00′50″S104°45′03″E / 3.01396°S 104.75093°E /-3.01396; 104.75093