Reservoir system operation considering environmental flow : a case of Geum River Basin, Republic of Korea | |
| Author | Park, Sangkwon |
| Call Number | AIT Thesis no.WM-14-10 |
| Subject(s) | Water resources development--Geum River Basin (Korea)--Environmental aspects Reservoirs--Geum River Basin (Korea)--Environmental aspects |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. WM-14-10 |
| Abstract | Water storage infrastructure developed to meet the water demand of people causes changes in flow regime which directly impacts the ecology of a river. Concerns about the health of rivers and efficient use of water resources have increased in recent years. Thus, a fundamental question of How much water is necessary to maintain a river? is required to be answered. This study addresses this question with the objectives of estimating the environmental flow requirements (EFRs) by hydrological methods and a habitat simulation model and for improving the management of water resources by way of a reservoir system operation in the Geum Rive Basin, Republic of Korea. Based on the pre-impact daily flow, the monthly environmental flow requirements downstream of dams are estimated by the Range of Variability Approach (RVA). The Habitat Simulation Model (PHABSIM) is used to evaluate the ecological flow requirements for target fish species depending on their life cycle. With the estimates of EFRs, reservoir operations of Yongdam Multipurpose Dam (YMD) and Daecheong Multipurpose Dam (DMD) are simulated using HEC-ResSim under different cases and evaluated using the reliability of water utilization. Based on the present water use, water supply capacity of YMD and DMD reservoir is sufficient to meet the human needs and the EFRs downstream of the two dams. However, based on the water supply plan, the water supply capacity of the two reservoirs is insufficient to meet human demands and the EFRs; Also, increasing the Noral High Water Level (NHWL) by 1m as a non-structural alternative does not improve the water supply capacity. Furthermore, in order to sustain riverine ecosystem, there is an urgent need to establish effective reservoir operations and management of existing dams. |
| Year | 2014 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. WM-14-10 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Babel, Mukand Singh |
| Examination Committee(s) | Shrestha, Sangam;Jourdain, Damien;Sutat Weesakul |
| Scholarship Donor(s) | K-water, Republic of Korea |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2014 |