The Optimal Strategy of Sustainable Reservoir Management from a Long-term Perspective
Date Issued
2015
Date
2015
Author(s)
Lin, Fu-Yi
Abstract
Reservoir management faces a crucial challenge from watershed sedimentation, which can significantly influence the sustainability of reservoirs. To maximize value of reservoirs and extend its lifespan, strategies of more effective and sustainable reservoir operation are always desired. For this purpose, sediment removal schemes such as dredging and flushing are usually considered; otherwise, dam decommissioning is also widely discussed. The issues raised after dam decommissioning are should we rebuild it, remove it, or just deposit the dam as it is. In the previous studies, retrofitting dam and sediment removal issues are discussed separately in the aspect of reservoir benefit estimation. However, it is very likely that sediment management might be related to dam removal problem. Using an economic analysis and an optimization, this study established a model to explore the log-term reservoir management regarding sediment removal and dam removal, thereby identifying whether operate reservoirs as renewable resources or non-renewable resources at the end of reservoir’s life. As a renewable resource, lifespan of reservoir could be extended indefinitely in contrast to as a non-renewable resource. As a consequence, we expect a better strategy can be proposed for sustainable management of reservoirs.
Subjects
sediment removal
reservoir renewal
economic analysis
SDGs
Type
thesis
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ntu-104-R02521312-1.pdf
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