Ulan Moron

Ulan Moron
The Ulan Moron or Tuotuo River
The headwaters of the Yangtze, including the Ulan Moron ("Tuotuo He"), Dangqu, Buqu, and Garqu
1975 DMA map of the region around the Ulan Moron ("T'o-t'o Ho")

The Ulan Moron (Mongolian: ᠤᠯᠠᠭᠠᠨᠮᠥᠷᠡᠨ, Ulaan Mörön, lit. "Red River"; Chinese: 乌兰木伦, p Wūlánmùlún), Mar Qu (Tibetan), or Tuotuo River (沱沱河,[a] p Tuótuó Hé, lit. "Tearful River";[1][b] Tibetan: ཐོག་ཐོག་ཆུ་, ZYPY: Togtog Qu) is a 336 km (209 mi) long river, located in Qinghai province in the People's Republic of China.

The Ulan Moron begins as melt-off from the Geladandong glaciers and runs to a confluence with the Dangqu or Dam Chu River, where they form the Tongtian River, which subsequently becomes the Yangtze River. Although the Dangqu has been found to be the source of the Yangtze under the usual modern criteria, the Ulan Moron has been traditionally regarded as the main river and source. It belongs to the East China Sea watershed basin.


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  1. ^ Powers, John & al. Historical Dictionary of Tibet, p. 155. Scarecrow Press (Plymouth), 2012. Accessed 14 August 2013.
  2. ^ 梅祖彦 [Mei Zuyan]. 《晚年随笔》 ["Old Age Essays"], p. 289. "The Changjiang Sanxia Hydro Power Development". 1997. Accessed 13 August 2013.
  3. ^ See, e.g., Togtoh County and Todok.