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从长江上游通天河至黄河源地区的引水线路,是西线南水北调工程可能选择的线路之一。我会南水北调查勘队,于1978年7月～10月对该地区三条引水线路以及通天河干、支流上的十七个坝段进行了地形、地貌、水文、地质、水工布置及社会经济情况的综合考察和测量。通天河在曲麻河口以上,河道宽浅,两岸山势低矮,没有适宜的坝址。在色吾曲口上下,则有歇马传日阿及扎秀九仁两处可作比较坝段(见附图)。
The water diversion route from the upper reaches of the Yangtze River to the Yellow River source area is one of the possible routes for the Western Route South-North Water Diversion Project. I will conduct a survey team from South to North China. From July to October 1978, we conducted topographical, geomorphological, hydrological, geological, hydraulic and socio-economic conditions on the three diversion routes in the area and the 17 dam sections in the trunk and tributaries of the Tongtian River Comprehensive inspection and measurement. Tongtianhe Quma estuary above the river width, the two sides of the mountain low, there is no suitable dam site. In color Wu Qu mouth up and down, there are Shema pass Japan and show Xiu-Jiu Ren two comparable dam (see photo).