IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2014  > Vol11 No.6
Experiments on Channel Evolution due to Dam Removal in Taiwan
WANG Hsiao-Wen; CHENG Ying-Che; LIN Chung-Yi
Corresponding AuthorWANG Hsiao-Wen
2014-11
Source PublicationJournal of Mountain Science
Volume11Issue:6Pages:1396-1405
AbstractDue to safety concerns and habitat restoration for landlocked salmon, a 13-m high check dam on Chijiawan Creek was removed in late May 2011 in Taiwan. We conducted experiments to understand channel evolution of different scenarios. We further compared our experimental results of riverbed elevation changes with the analytical solutions derived from the diffusion equation and field dynamics as well after the creek experienced the first flood event. The results indicated that magnitude of discharges and notch size are dominant factors in resulting channel evolution. While the largest differences between grain size distribution are associated with discharge, the largest differences in net change in upstream volume are associated with notch size. While the theoretical equation could help understand the channel change after dam removal, it only explained the evolution closer to the dam. The physical experiments, on the other hand, provided insights especially with regard to comparing alternative proposed management actions. The discrepancies between predicted and actual outcome highlight more needed inputs for future dam-removal assessments.
KeywordDam Removal Physical Experiments Channel Evolution Grain Size Distribution Riverbed Elevation
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/7410
CollectionJournal of Mountain Science_Journal of Mountain Science-2014_Vol11 No.6
Corresponding AuthorWANG Hsiao-Wen
Recommended Citation
GB/T 7714
WANG Hsiao-Wen,CHENG Ying-Che,LIN Chung-Yi. Experiments on Channel Evolution due to Dam Removal in Taiwan[J]. Journal of Mountain Science,2014,11(6):1396-1405.
APA WANG Hsiao-Wen,CHENG Ying-Che,&LIN Chung-Yi.(2014).Experiments on Channel Evolution due to Dam Removal in Taiwan.Journal of Mountain Science,11(6),1396-1405.
MLA WANG Hsiao-Wen,et al."Experiments on Channel Evolution due to Dam Removal in Taiwan".Journal of Mountain Science 11.6(2014):1396-1405.
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