| Title: | Development and integration of sub-daily flood modelling capability within the SWAT model and a comparison with XAJ model |
| Authors: | Li, D., S. Qu, P. Shi, X. Chen, F. Xue, J. Gou and W. Zhang |
| Year: | 2018 |
| Journal: | Water |
| Volume (Issue): | 10(9) |
| Pages: | |
| Article ID: | 1263 |
| DOI: | 10.3390/w10091263 |
| URL (non-DOI journals): | |
| Model: | SWAT |
| Broad Application Category: | hydrologic only |
| Primary Application Category: | sub-daily hydrologic and/or pollutant processes |
| Secondary Application Category: | model and/or data comparison |
| Watershed Description: | 14,800 km^2 Qilijie River, a tributary of the Minjiang River located in the north part of Fujian province in Southeast China. |
| Calibration Summary: | |
| Validation Summary: | |
| General Comments: | |
| Abstract: | To date, floods have become one of the most severe natural disasters on Earth.
Flood forecasting with hydrological models is an important non-engineering measure for flood
control and disaster reduction. The Xin’anjiang (XAJ) model is the most widely used hydrological
model in China for flood forecasting, while the Soil and Water Assessment Tool (SWAT) model is
widely applied for daily and monthly simulation and has shown its potential for flood simulation.
The objective of this paper is to evaluate the performance of the SWAT model in simulating floods at
a sub-daily time-scale in a slightly larger basin and compare that with the XAJ model. Taking Qilijie
Basin (southeast of China) as a study area, this paper developed the XAJ model and SWAT model at
a sub-daily time-scale. The results showed that the XAJ model had a better performance than the
sub-daily SWAT model regarding relative runoff error (RRE) but the SWAT model performed well
according to relative peak discharge error (RPE) and error of occurrence time of peak flow (PTE).
The SWAT model performed unsatisfactorily in simulating low flows due to the daily calculation of
base flow but behaved quite well in simulating high flows. We also evaluated the effect of spatial scale
on the SWAT model. The results showed that the SWAT model had a good applicability at different
spatial scales. In conclusion, the sub-daily SWAT model is a promising tool for flood simulation
though more improvements remain to be studied further. |
| Language: | English |
| Keywords: | sub-daily SWAT model; flood simulation; XAJ model; Qilijie basin |