Posted on 01/08/2010

Photo taken on December 21, 2009

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Maenam Ou
Nam Ou

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Nam Ou

Nam Ou 

Where does Nam Ou river originate from? Chansamal Khouakham, an officer from the department of information and Culture in Moung Gnot Ou district, who was present when marking the boundary line between Laos-China, started that Nam Ou river begins from the hill foot of Phou Khoud mountain (close to the 5th boder sign on the slope of the mountain) with a height of 1245 meters which forms a natural boundary line between Laos and China. With a radius of about 25 meters the ponds creating the source of Nam Ou river is ina flat area surrounded by white sand and gravel. Dense grass along with huge soft wood such as; Ton Thong and Ton Toum Tam grow tall where the water is shallow to the ankle. From this point Nam Ou river curves downward 10 km reaching 7th boder sign at Lan Tui, the boundary line between Laos-China. At this point with a width of 2-3 meters wide, Nam Ou current becomes powerful and swiftly runs through the rain forest of Phou Fa mountain strongly to the mouth of Nam Ou river. Nam Ou river, wit a toal length of 488 km is the longest tributary of the Mekong river. Besides the Nam Ou river, Phou Khoud mountain creates 3 additional rivers in Laos; Nam Xang, Nam Ou Noy and Nam Khang river. In China, Phou Khoud mountain is the source of another river.