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Vol.48, No.1, PP.1-62
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1
Feasibility Analyses of River Sediment Estimation and Mountain Mapping by UAV Techniques
48(1):1-13
Wei Chang[1] Yu-Shen Hsiao[1] * Jung-Chieh Chang[1] [2]
* Corresponding Author. E-mail : yshsiao@nchu.edu.tw
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2
Rainfall Seepage-induced Stability Analyses of Unsaturated Slopes with Tie-back Retaining Piles
48(1):14-26
Der-Guey Lin [1] Sheng-Hsien Wang[2] Jui-Ching Chou [3] Sheng-Fu Sheu [4]*
* Corresponding Author. E-mail : sanford877@yahoo.com.tw
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3
Establishment and Application of Evaluation Procedure of Dam Removal for Decision Support in Taiwan
48(1):27-35
Hsiao-Wen Wang* Wei-Cheng Kuo Shang-Lin Kuo
* Corresponding Author. E-mail : whw82@mail.ncku.edu.tw
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Establishment and Application of Evaluation Procedure of Dam Removal for Decision Support in Taiwan
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Hsiao-Wen Wang* Wei-Cheng Kuo Shang-Lin Kuo

Abstract
In order to review the effectiveness of dam removal and to develop a river management model, it is necessary to establish a suitable decision-making process for dam removal in Taiwan. This study develops a 7-step process for reducing the ecological impact and hazard risk of dam removal. Four dams located in the Wuling region were used for this research: Yousheng Creek Dam #1, Chijiawan Dam #1, Dam #3 and Dam #4. Along with river and dam surveys, Shei-Pa National Park collected ecological monitoring data over a period of decades. Such analyses allow
for the ecological, economic and safety assessment of dam removal. The results of the proposed 7-step process show
that Chijiawan Dam #1 is a priority spot for improvement. This finding is in agreement with prior research. This consistency over the years shows the process has a certain level of predictability. The application of the 7-step process would help decision-makers to master the whole dam removal process.
Key Words: Dam removal, decision-making, evaluation procedure, Chijiawan Creek.
Department of Hydraulic & Ocean Engineering, National Cheng Kung University, Tainan, Taiwan, R.O.C.

* Corresponding Author. E-mail : whw82@mail.ncku.edu.tw
Received: 2016/10/07
Revised: 2016/11/11
Accepted: 2017/03/10
4
Recent Changes in Groundwater Storage in Jhuoshuei River Basin, Taiwan
48(1):36-43
Chia-Chi Huang Kun-Ta Lin Hsin-Fu Yeh*
* Corresponding Author. E-mail : hfyeh@mail.ncku.edu.tw
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5
A Rainfall-based Warning Model for Predicting Landslides Using QPESUMS Rainfall Data
48(1):44-55
Chen-Yu Chen[1]* Wei-Ze Liou [1][2] Chia-Hsiang Hsu [3]
* Corresponding Author. E-mail : cychen59@gmail.com
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6
Characteristics of the Development of Erosion and the Dynamics of Gravelly Debris Flow in the Houyenshan
48(1):56-62
Yan-Xin Zhong Chia-Ming Lo*
* Corresponding Author. E-mail : cmlo@nuu.edu.tw
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