Tamakoshi
| Tamakoshi | ||
 Bridge over the Tamakoshi near Nayapool |
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| Data | ||
| location | Districts Dolakha , Ramechhap ( Nepal ) | |
| River system | Ganges | |
| Drain over | Sunkoshi → Koshi → Ganges → Indian Ocean | |
| Confluence of |
Rongshar Chu and Lapchi gear 27 ° 57 '54 " N , 86 ° 13' 9" O |
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| muzzle |
Sunkoshi coordinates: 27 ° 21 ′ 6 " N , 85 ° 58 ′ 58" E 27 ° 21 ′ 6 " N , 85 ° 58 ′ 58" E
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| length | 92 km | |
| Catchment area | 4100 km² | |
| Left tributaries | Rolwaling Chu , Khimti Khola | |
| Right tributaries | Chyadu Khola | |
| Small towns | Manthali | |
 Tamakoshi at Manthali |
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The Tamakoshi ( Nepali तामाकोशी ) is a left tributary of the Sunkoshi in the Nepalese part of the Himalayas .
The Tamakoshi arises at the confluence of its two source rivers Rongshar Chu and Lapchi Gang not far from the border with Tibet . In the north, the Tamakoshi catchment area is bounded by the Lapche Himal mountain range in Tibet . The Tamakoshi flows mainly in a southerly direction through the Dolakha district in the Janakpur administrative zone . To the east of the river lies the Rolwaling Himal mountain range . The river takes on the tributaries Rolwaling Chu and Khimti Khola from the left . The Tamakoshi flows through the Ramechhap district for the last 20 km . Eventually the tamakoshi meets the sunkoshi flowing eastwards. The Tamakoshi has a length of 92 km.
Hydropower plants
A few kilometers above the confluence of the Rolwaling Chu, the dam for the Upper Tamakoshi hydropower plant (456 MW) is currently being built .
The Khimti hydropower plant (60 MW) is located on the lower reaches of the Tamakoshi, on the left bank of the river above the confluence of the Khimti Khola . Most of the water from the Khimti Khola is diverted to the hydroelectric power station via a tunnel, where it flows into the Tamakoshi.
