IIIF Color HighRes
National Institute of Informatics - Digital Silk Road Project
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| IIIF Color HighRes |
| Scientific Results of a Journey in Central Asia, 1899-1902 : vol.1 |
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| KÖTÄKLIK-DARJA ABOVE THE ISLAND. | |
| Kötäklik-darja (the right arm), Sept. 23. | |
| Kötäklik-darja (the left arm), Sept. 23. |
Citation Information
1'HE TARIM RIVER.
new cut, so as to force the water of the Jarkent-darja into the bed of the Konadarja. The dam, which is built of toghrak-trunks, branches, brushwood, and clay, is said to require 1000 men for its construction. It is however never strong enough to withstand the force of the river when in full flood, but always gives way before it and is broken. Hence, as the cultivation of Maral-baschi is entirely dependent upon artificial irrigation, the dam has to be reconstructed every spring. But no dam is required in the Kona-darja, for the canal which leads off from it on the left, and which has gradually developed into a regular arm of the river, lies at a lower level than the Kona-darja itself, so that the water naturally gravitates that way of its own accord. After some distance it enters a lake, and thence proceeds by several branches to Maral-baschi.
The new arm I have spoken of is called Kötäklik, because it is filled with driftwood (kötäk). The space between the two river-arms is occupied by a kamisch (reed) steppe. Forest is thin and rare. In the Kötäklik-darja the current was active, as it generally is in newly formed branches, owing to the fact that it has not yet begun to wind about and does not yet dissipate its energy over a long course.
Fig. 2I. KÖTÄKLIK-DARJA ABOVE THE ISLAND.
In the upper part of the Kötäklik-darja there is an island, consisting, not of silt,
but of firm ground, lifted tolerably high above the surface of the stream and covered
with vegetation. From its upper end we measured the volume of the divided current
which flowed on each side of it. The branch on the right was 29.20
Scale I : 500. m. broad, and had a mean depth
57 82 62 68 51 ' velocity.
of 1.230 m., a mean velocity of
52 78 70 54 39 0.5715 m., and a volume of 20.53
Breadth = 29.20 In. Kötäklik-darja (the right arm), Sept. 23. cub. m., in the second; while the
measurement of the left branch
gave the following results, breadth,
scale I : 500. 34.,20 m.; mean depth, 0.613 m.;
Fig. 23. Left. 0.44 0.60 0.74 1.01 0.89 = deapth. Right.
I 70 so 69 ! mean velocity, 0.5177 m. in the
2
3 5 7 91 velocity.
29 39 52 53 481 second; volume, 10.86 cub. m. in
Breadth = 34.20 m. Kötäklik-darja (the left arm), Sept. 23. the second. Thus the total volume
22
Fig. 22. Left. 1.72 I Sx 147 1.34 1.34 = depth. Right.
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