Preparing the Qinghai Rural Water Resources Management Project
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Channel Adjustments in Response to the Operation of Large Dams: the Upper Reach of the Lower Yellow River
University of Wollongong Research Online Faculty of Science - Papers (Archive) Faculty of Science, Medicine and Health 1-1-2012 Channel adjustments in response to the operation of large dams: the upper reach of the lower Yellow River Yuanxu Ma Chinese Academy of Sciences He Qing Huang Chinese Academy of Sciences Gerald C. Nanson University of Wollongong, [email protected] Yongi Li Yellow River Institute of Hydraulic Research China Wenyi Yao Yellow River Institute of Hydraulic Research, China Follow this and additional works at: https://ro.uow.edu.au/scipapers Part of the Life Sciences Commons, Physical Sciences and Mathematics Commons, and the Social and Behavioral Sciences Commons Recommended Citation Ma, Yuanxu; Huang, He Qing; Nanson, Gerald C.; Li, Yongi; and Yao, Wenyi: Channel adjustments in response to the operation of large dams: the upper reach of the lower Yellow River 2012, 35-48. https://ro.uow.edu.au/scipapers/4279 Research Online is the open access institutional repository for the University of Wollongong. For further information contact the UOW Library: [email protected] Channel adjustments in response to the operation of large dams: the upper reach of the lower Yellow River Abstract The Yellow River in China carries an extremely large sediment load. River channel-form and lateral shifting in a dynamic, partly meandering and partly braided reach of the lower Yellow River, have been significantly influenced by construction of Sanmenxia Dam in 1960, Liujiaxia Dam in 1968, Longyangxia Dam in 1985 and Xiaolangdi Dam in 1997. Using observations from Huayuankou Station, 128 km downstream of Xiaolangdi Dam, this study examines changes in the river before and after construction of the dams. -
Social Impact Analysis of Large Dams: a Case Study of Cascading Dams on the Upper-Mekong River, China
SOCIAL IMPACT ANALYSIS OF LARGE DAMS: A CASE STUDY OF CASCADING DAMS ON THE UPPER-MEKONG RIVER, CHINA A Thesis Presented to the Faculty of the Graduate School of Cornell University In Partial Fulfillment of the Requirements for the Degree of Master of Science by Pu Wang January 2012 © 2012 Pu Wang ABSTRACT Large dam construction has significant environmental and social impacts at different scales. This thesis first summarizes and updates information about the history, distribution, functions, and impacts of large dams, both globally and at China’s national level. It then addresses the social impacts of large dams, and introduces an empirical study conducted during the summer of 2010 in areas affected by dams along the Upper- Mekong River, China. The construction of large hydropower dams in this region has significantly impacted local communities. Numerous governmental policies have been designed to compensate for losses in wealth incurred by people relocated in the wake of new dam construction. I argue that wealth is a multi-dimensional attribute; identify three classes of wealth that are impacted by dam construction, namely material (land, houses), embodied (knowledge, skills), and relational (infrastructure); and compare losses and compensations for each class. Farmer interviews were conducted in ten villages affected by three dams built in 1995 (Manwan), 2003 (Dachaoshan), and 2009 (Xiaowan), and government statistics and documents were also analyzed to complement the empirical study. Results indicated that villagers often suffer from wealth loss in all three characterized dimensions, but government compensation policies typically consider only material wealth. This inequity leads to dissatisfaction on both sides, and is the root cause for disagreements and conflicts. -
List of Tallest Dams in the World 1 List of Tallest Dams in the World
List of tallest dams in the world 1 List of tallest dams in the world This list is incomplete. This is a list of the tallest dams in the world over 135 m (443 ft) in height. Currently, the tallest dam in the world is the Jinping-I Dam, an arch dam in China at 305 m (1,001 ft) high. The tallest embankment dam is the 300 m (984 ft) high Nurek Dam in Tajikistan which is also the second tallest dam in the world. For gravity dams, the tallest is the 285 m (935 ft) high Grande Dixence Dam in Switzerland. When completed, a 335 m (1,099 ft) tall Rogun Dam also in Tajikistan could be the tallest, depending on the chosen design. Next in line is the 312 m (1,024 ft) Shuangjiangkou Dam currently under construction in China. Natural landslide dams are also quite competitive in height but not listed here. In particular, the highest natural dam, Usoi Dam, is higher than the highest existing man-made one. The Nurek Dam in Tajikistan. The Grande Dixence Dam in Switzerland. The Inguri Dam in Georgia. The Vajont Dam in Italy. List of tallest dams in the world 2 The Tehri Dam in India. The Mica Dam in Canada. The Sayano Shushenskaya Dam in Russia. The Srisailam Dam in India. The Oroville Dam in the United States. The El Cajón Dam in Honduras. List of tallest dams in the world 3 The Bhakra Dam in India. The Luzzone Dam in Switzerland. The Hoover Dam in the United States. -
The Upper Reach of the Lower Yellow River
Geomorphology 147–148 (2012) 35–48 Contents lists available at SciVerse ScienceDirect Geomorphology journal homepage: www.elsevier.com/locate/geomorph Channel adjustments in response to the operation of large dams: The upper reach of the lower Yellow River Yuanxu Ma a, He Qing Huang a,⁎, Gerald C. Nanson b, Yong Li c, Wenyi Yao c a Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Chaoyang District, Beijing, 100101, China b School of Earth and Environmental Sciences, University of Wollongong, New South Wales, 2522, Australia c Yellow River Institute of Hydraulic Research, Zhengzhou, 450003, China article info abstract Article history: The Yellow River in China carries an extremely large sediment load. River channel-form and lateral shifting in Received 6 July 2010 a dynamic, partly meandering and partly braided reach of the lower Yellow River, have been significantly Received in revised form 20 July 2011 influenced by construction of Sanmenxia Dam in 1960, Liujiaxia Dam in 1968, Longyangxia Dam in 1985 Accepted 22 July 2011 and Xiaolangdi Dam in 1997. Using observations from Huayuankou Station, 128 km downstream of Available online 26 August 2011 Xiaolangdi Dam, this study examines changes in the river before and after construction of the dams. The temporal changes in the mean annual flow discharge and mean annual suspended sediment concentration Keywords: fl fi Lower Yellow River have been strongly in uenced by operation of theses dams. Observations of sediment transport coef cient River channel adjustment (ratio of sediment concentration to flow discharge), at-a-station hydraulic geometry and bankfull channel Dam impacts form observed from 1951 to 2006 have shown that, although variations in flow and sediment load corre- At-a-station hydraulic geometry spond to different periods of dam operation, changes in channel form are not entirely synchronous with Bankfull hydraulic geometry these.