| Author | Chathuranika, Imiya Mudiyanselage |
| Call Number | AIT Thesis no.WM-18-03 |
| Note | A thesis submitted in partial fulfillment of the requirements for the
Degree of Master of Engineering in
Water Engineering and Management, School of Engineering & Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The importance of understanding reservoir operation is essential to maintain and plan water resources. When dealing with climate change this situation is questionable. The overall objective of this study was to analyze the impact of climate change on streamflow and hydropower production in Upper Kotmale river basin in Sri Lanka. A calibrated and validated hydrological model named The Hydrological Modeling System (HEC-HMS) was used in this study. The hydrological model, HEC-HMS has been calibrated and validated to determine the inflow of the Upper Kotmale hydropower reservoir under current and future climate scenarios. In order to predict future precipitation and temperature, Bias correction has been done by using linear scaling method for six rainfall gauging stations and one temperature gauging station by using the Coordinated Regional Climate Downscaling Experiment over South Asian domain (CORDEX-South Asia) with three Regional Climate Models (RCMs) named ACCESS, CNRM and REMO2009 simulations under Representative Concentration Pathway (RCP) 4.5 and 8.5 climate scenarios for near (2017-2040), mid (2041-2070) and far (2071-2099) future. The output from the HEC-HMS has been used as an input to the reservoir operation model, US Army Corps of Engineer’s Reservoir Evaluation System Simulation Model (HEC-ResSim),to simulate inflow of the Upper Kotmale power house and power production. The results of the HEC-ResSim under RCP4.5 and RCP8.5 climate scenarios, represented an increment of the Upper Kotmale reservoir power storage potential up to 6.62% (near future) and 12.61% (far future). So, it can be implemented that the Upper Kotmale power generation is depending on the climate change. This study helps decision makers of water resources to promote techniques of reservoir operation to increase hydropower generation due to climate change. |
| Year | 2018 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Shrestha, Sangam; |
| Examination Committee(s) | Babel, Mukand S. ;Duc Hoang Nguyen;Sarawut Ninsawat ; |
| Scholarship Donor(s) | -; |