Climate change impacts on streamflows of the Songkhram River Basin, Thailand | |
| Author | Adhikari, Nidhi |
| Call Number | AIT Caps. Proj. no.CIE-16-03 |
| Subject(s) | Climatic changes--Thailand--Songkhram River Basin Streamflow--Thailand--Songkhram River Basin Hydrology--Thailand--Songkhram River Basin |
| Note | A capstone project report submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Engineering Civil And Infrastructure Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Caps. Proj. ; no. CIE-16-03 |
| Abstract | Climate change is a global phenomenon that is expected to change various components of the hydrological cycle such as precipitation patterns and total annual stream flows. The increas- ing variability in rainfall due to climate change is likely to cause variations in streamflow. Hydrological modeling was conducted in order to understand the impacts of climate change on streamflows at the basin scale. The HEC-HMS rainfall runoff model was developed for watershed simulation of the Songkhram River Basin to determine the discharge at the outlet of the basin. The model was calibrated and validated using daily precipitation data from ten rainfall gag- ing stations and discharge data from one hydrological station. Comparison of observed and simulated hydrographs for calibration showed a resemblance in the shape of the hydrograph, but was unable to depict a similar magnitude of peak. To assess the performance of the hydro- logical model in simulating future streamflows, the cross validation technique was adopted. Climate change scenarios for two general circulation models namely MRI-CGCM3 and ECHAM6, each for two different Representative Concentration Pathways (RCPs) were fed into the HEC-HMS model. Streamflows of the Songkhram basin were simulated for three time frames: 2030s, 2060s and 2090s and compared with the observed flow in the baseline period (2012-2015). The results show that streamflows of the Songkhram River are pre- dicted to increase in the future but the magnitude of increase varies with time and the RCP scenario. The discharge of the Songkhram River shows large variations during the monsoon season (June to September) due to the impacts of climate change for all future periods. |
| Year | 2016 |
| Corresponding Series Added Entry | Asian Institute of Technology. Caps. Proj. ; no. CIE-16-03 |
| Type | Capstone Project |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Civil and Infrastructure Engineering (CIE) |
| Chairperson(s) | Shrestha, Sangam; |
| Examination Committee(s) | Babel, Mukand Singh; |
| Degree | Capstone Project (B.Sc.)-Asian Institute of Technology, 2016 |