Nam Ou
| Nam Ou | ||
 Mekong river system |
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| Data | ||
| location | Phongsaly Province , Oudomxay and Luang Prabang province ( Laos ) | |
| River system | Mekong | |
| Drain over | Mekong → South China Sea | |
| source | Ban Uan Touy-Gnai, Phongsali Province | |
| Source height | 1263 m | |
| muzzle | Mekong near Pak Ou Coordinates: 20 ° 3 ′ 16 " N , 102 ° 12 ′ 42" E 20 ° 3 ′ 16 " N , 102 ° 12 ′ 42" E |
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| Mouth height | 350 m | |
| Height difference | 913 m | |
| Bottom slope | 2.3 ‰ | |
| length | 390 km | |
| Catchment area | 26,180.5 km² | |
| Left tributaries | Nam Leng , Nam Phak | |
 Nam Ou at Nong Khiaw |
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 Dam construction for energy supply on the lower reaches of the Nam Ou |
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The Nam Ou ( Lao : ນ ້ ຳ ອູ , [ nâːm ùː ]) is a 390 kilometer long river in northern Laos .
It rises in the Phongsali province and flows into the Mekong at Pak Ou . At the mouth there are the two famous caves Tham Thing and Tham Phum . The Nam Ou is an important artery in northern Laos, as many of the places along its course are not yet connected to the road network. Most of the river's catchment area (EZG) is mountainous with deeply cut valleys. The subtropical climate in the EZG has a distinct dry season (November to April) and a rainy season (May to October). The average annual precipitation in the EZG is approx. 1700 mm, 80% of which is due to the rainy season. The EZG consists mainly of forests and bushland. Geologically, the Nam Ou flows through primarily Mesozoic and Paleozoic limestone and sandstone formations.
Currently, 5 dams are being built on Nam Ou to generate energy through hydropower.
Individual evidence
- ↑ a b c d e UNESCO-IHP Regional Steering Committee for Southeast Asia and the Pacific (2002): Catalog of Rivers in Southeast Asia and the Pacific , Vol. 4., 166-179. ISBN 499006531X
- ↑ a b B. Shrestha, MS Babel, p Maskey, A. van Griensven, p Uhlenbrook, A. Green, I. Akkharath (2013): Impact of climate change on sediment yield in the Mekong RiverBasin: a case study of the Nam Ou basin, Lao PDR in: Hydrol. Earth Syst. Sci., 17, 1-20. doi : 10.5194 / hess-17-1-2013
