Pieter Neele's Blog

A new Mekong source - the true one at last?

pieterneele | 28 August, 2013 17:10

I started out with the tempting thought we were the first to visit both the Jifu and the Guosongmucha source. I wrote that all of the expeditions to the headwaters concentrated on one source, and one only (blog post of August 12). But re-reading publications on the search for the Mekong source I find conflicting accounts about this. It is possible Dr. Liu Shaochuang visited both places during his 1999 expedition. So maybe the idea was to good to be true.

But here is an even more tempting thought. We have discovered a ‘new’ source of the Mekong, previously visited nor identified by anyone. And in doing so we finally found the Mekong’s real source.

Hubris? Making a fool of myself? Possibly.

The fact though is that the Mekong’s source at the head of the Gaodepu, always refered to as the Jifu Shan source, is not on Jifu Shan (‘shan’ is Chinese for ‘mountain’).

See this picture first, taken from the valley of the Gaoshanxigu looking in a northerly direction. The mountain to the right (east) is Jifu Shan. But the Gaodepu’s source, and so the Mekong’s source, is on the norhteastern face of the mountain to the left. (On this photo that means on the back side of the mountain.)

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The next two photos are taken in the valley of the Gaodepu looking in a southerly direction. Now Jifu Shan is to our left.

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At this confluence the stream from the left is the bigger one. So that is the one we followed when hiking to the source. It turned out that it loops around the hill that can be seen ahead. At no point did we come across a stream from the left, i.e. a stream running down from Jifu Shan, feeding into the Gaodepu.

Behind the hill is the Tibetan ‘marker’ for the river source. But we found that small trickles of water flowed from higher up still. We followed these, and in doing so climbed the mountain to the right in the picture, until we reached the foot of the glacier.This is the source of the Gaodepu and of the Mekong. It is not on Jifu Shan, but on the mountain west of it.

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Now to the claims of the ‘father’ of the Jifu Shan source, Dr. Liu Shaochuang. In 1999 he published the location of the Gaodepu’s source and contended it is the Mekong’s source. In ‘Geoinformation Science’, 1999, no. 2, he wrote:

‘The headwaters of Zayaqu are those of the Mekong River. The headwaters are in Jifu Shan 5552m (N33 45 35, E 94 41 12) which is on the boundary of Zhidoi County and Zadoi County. Water supply source to the headwaters is one of snow basins in Zhidoi County.’ (As quoted by Mr. Kitamura in Japanese Alpine News, Vol. 10, 2009).

Then in the March 2007 issue of ‘Geo-spatial Information Science’, page 54, he came up with different coordinates for the Gaodepu’s / Mekong’s source:

‘The Mekong originates from the foot of Mountain Jifu. The geographic position of the source of the Mekong is latitude 33 45 48 N and longitude 94 40 52 E, in which the elevation is 5.200 meter, on the boundary of Zaduo County and Zhiduo County, Qinghai, China.’

The change in coordinates may seem minor. But it means shifting the source from Jifu Shan to the mountain to the west of it. This is easily visible on Google Earth. And it corresponds with  our own observations: the source is on the mountain to the west of Jifu Shan. Our GPS readings for the source: 33 45 677 N and 94 40 562 E. We were using a slightly different ‘decimal’ unit for the last digits, but this is quite close to the 2007 source of Liu. However, our source is located at an altitude of 5.374 meters (GPS measured), so no less than 174 meters higher than Liu’s, at the foot of the glacier where ice melts and starts to flow. So I regard our source on the mountain to the west of Jifu Shan as a more valid Mekong source than Liu’s. It is important to know also that Liu himself has not visited this source west of Jifu Shan, his claim is the result of the study of satellite images.

(By the way, Liu erroneously repeats in 2007 that the source is straddling the boundary between Zaduo and Zhiduo, which is also the divide between the Mekong and the Yangtse basin. Jifu Shan and his original source location are indeed on this divide. But the mountain to the west is not, it is inside the Mekong basin. (See the first photo above.))

 

Those that favour Guosongmucha above Jifu as the source of the Mekong have come up with  arguments to discredit Jifu. I would like to discredit some of these attempts to discredit.

According to Zhou Changjin and Guan Zhihua the Jifu source is less valid than Guosongmucha because the larger part of Jifu’s glacier is located in the Yangtse basin, a smaller part in the Mekong basin. With the new source west of Jifu, and inside the Mekong basin this becomes an irrelevant remark. Furthermore they ‘accuse’ the Jifu / Gaodepu stream of seasonal changes. However, there is nothing seasonal about the glacial source west of Jifu: it will not run dry at any point of year.

Wong How Man in a newspaper article with dateline Taipei, July 11, 2007 calls Jifu a ‘wetland source’ as opposed to the ‘glacial source’ of Guosongmucha, maybe suggesting a glacial source has to be taken more seriously. As seen however: the source west of Jifu is glacial too, located 400 meters higher than the wetland. In the same article he levels against the Jifu / Gaodepu stream that it is only longer than the Guosongmucha / Gaoshanxigu stream because it does a lot of meandering. The Gaoshanxigu doesn’t, 'it seemed to be because (it) has a much larger flow thus creating a much larger riverbed and allowing the river to flow in a straight line.' And he suggests 'a scenario that if it were to have a smaller flow, the river would meander much more, making it longer.' First I have to dispute the Gaoshanxigu doesn’t meander because of its larger flow. It doesn’t meander because it is mostly hemmed in by somewhat elevated banks. Second meandering is not only influenced by speed and volume of a water flow, but also by factors as softness of terrain. The meandering of the Gaodepu takes place in a relatively short stretch. After coming down from the mountain it flows rather straight through a rocky river bed, then for a couple of kilometers meanders through soft wetland, then for more than half the distance between source and Yeyongsong confluence flows straight again through a hard rocky bed.

Note that despite everything Wong has to say about the Gaodepu and Jifu Shan, he has visited neither. 

 

In 2009 two teams announced their intent go on an expedition to the Mekong headwaters. I don’t know if these have indeed taken place. I have found no record of their results. I can’t exclude the possibility they have come up with findings similar to ours. I readily concede of course if anyone shows proof in the shape of photos or GPS tracks they discovered the source on the mountain west of Jifu before we did.

If they do, my tempting thought of having discovered a ‘new’ Mekong source, and even finally the true Mekong source, was to good to be true.

But it will not take away the immense satisfaction of having found this source by ourselves, not by viewing satellite images, but by actually exploring on the ground, following a stream, climbing a mountain and ending up at the foot of a glacier where ice melts and Mekong water starts to flow.

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