• Journal of agriculture & life science
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• v.52 no.6
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• pp.139-153
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• 2018

This study analyzes the economic effect of rehabilitation and upgrading of reservoirs as a prevented method against natural disasters under recent abnormal weather conditions and dam-break. For the analysis, we divide the purpose of rehabilitation and upgrading of reservoirs into the stable supply of rural water under uncertain weather conditions and the prevention of collapse due to the aging of the reservoir. We measure the economic effect of rehabilitation and upgrading of reservoirs by estimating the resident's willingness-to-pay for the project through Contingent Valuation Method(CVM). The result shows that distributions of willingness-to-pay to prevent natural disasters and dam-break are similar to each other. About 66% of the residents in sample regions are willing to pay for the project. The resident's willingness-to-pay to protect natural disasters and dam-break are 32,250 to 46,147 won and 28,427 to 47,308 won respectively on average for all sample regions. The comparison of willingness-to-pay by type of regions shows that paddy field areas are the highest followed by facility cultivation areas and urban areas. In addition, total expected value of the projects calculated based on the resident's willingness-to-pay for paddy field areas and facility cultivation areas are much larger than actual project costs. This implies that rural residents are fully aware of the importance of the project to prevent natural disasters and dam-break and are willing to pay for additional costs if needed.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2005.10a
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• pp.38-44
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• 2005

Rehabilitation and upgrading of the irrigation facilities are usually for the reservoirs, pumping stations, and other facilities in the paddy fields. Changes in food consumption patterns have taken place in Korea and there are growing foreign demands that we open our agricultural products market. In accordance with this situation, farmers are turning increasingly to growing vegetables which provide a high income cash crop. It is necessary to irrigate by pressure through pipe lines in farming facilities and mass production farming. Flood damage occurs as a result of heavy rainfall. The design criteria should be followed to minimize the risk of the flood damage in rehabilitation and upgrading.