Flood forecasting with rainfall-runoff models | |
| Author | Wang, Tong |
| Call Number | AIT Thesis no. WA-90-39 |
| Subject(s) | Runoff--Mathematical models Flood forecasting |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | This study investigated a suited of hydrologic models of different levels of complexities, - from simple black-box to complex soil moisture accounting -, and of different model structures - black box, conceptual, and combined conceptual-black box -, to forecast major floods of sub-humid basins. The constrained linear system (CLS), the two versions of the CLS and Xinanjiang combined model called CLSN and Xnanjiang-CLS, Xinanjiang and Sacramento model were applied to forecast flood in the sub-humid Huang Chuan catchment of Huai River in China. These models were calibrated using five years of 6-hourly observed rainfall and streamflow data and validated with two years of data not used in the calibration. It was found that combined models, Xinanjiang-CLS and CLSN, and especially the former, are consistently better than conceptual models and the Black box model in simulating the major floods of the Huangchuan Basin. Apparently this modelling approach worths further exploration and a conceptual model such as the Xinanjiang model is an effective rainfall preprocessing scheme and its effectiveness seems to also depend on the number of major flow mechanisms considered. |
| Year | 1990 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Water Resources Research Engineering (WA) |
| Chairperson(s) | Gan, Thian Yew |
| Examination Committee(s) | Paudyal, Guna N. ;Huynh, Ngoc Phien |
| Scholarship Donor(s) | DAAD, F.R. Germany |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1990 |