SWAT Literature Database for Peer-Reviewed Journal Articles

Title:Correction and informed regionalization of precipitation data in a high mountainous region (Upper Indus Basin) and its effect on SWAT-modelled discharge 
Authors:Khan, A.J. and M. Koch 
Volume (Issue):10(11) 
Article ID:1557 
URL (non-DOI journals): 
Broad Application Category:hydrologic only 
Primary Application Category:climate data effects 
Secondary Application Category:hydrologic assessment 
Watershed Description:165,400 km^2 Upper Indus River, located in the high mountainous Hindu Kush region of northwest Pakistan. 
Calibration Summary: 
Validation Summary: 
General Comments: 
Abstract:The current study applied a new approach for the interpolation and regionalization of observed precipitation series to a smaller spatial scale (0.125° by 0.125° grid) across the Upper Indus Basin (UIB), with appropriate adjustments for the orographic effect and changes in glacier storage. The approach is evaluated and validated through reverse hydrology, and is guided by observed flows and the available knowledge base. More specifically, the generated corrected precipitation data is validated by means of SWAT-modelled responses of the observed flows to the different input precipitation series (original and corrected ones). The results show that the SWAT-simulated flows using the corrected, regionalized precipitation series as input are much more in line with the observed flows than those using the uncorrected observed precipitation input for which significant underestimations are obtained. 
Keywords:precipitation estimation; orographic correction factor (OCF); water balance; glacier mass balance; SWAT-hydrological model; Upper Indus Basin (UIB); reverse hydrology