SWAT Literature Database for Peer-Reviewed Journal Articles

Title:The application of a modified version of the SWAT model at the daily temporal scale and the hydrological response unit spatial scale: A case study covering an irrigation district in the Hei River Basin 
Authors:Wei, Z., B. Zhang, Y. Liu and D. Xu 
Volume (Issue):10(8) 
Article ID:1064 
URL (non-DOI journals): 
Model:SWAT (modified) 
Broad Application Category:hydrologic only 
Primary Application Category:crop, forest and/or vegetation growth/yield and/or parameters 
Secondary Application Category:model and/or data comparison 
Watershed Description:16.65 km^2 Yinke irrigation district, located within the Hei River drainage area in northwest China. 
Calibration Summary: 
Validation Summary: 
General Comments: 
Abstract:As a well-built, distributed hydrological model, the Soil and Water Assessment Tool (SWAT) has rarely been evaluated at small spatial and short temporal scales. This study evaluated crop growth (specifically, the leaf area index and shoot dry matter) and daily evapotranspiration at the hydrological response unit (HRU) scale, and SWAT2009 was modified to accurately simulate crop growth processes and major hydrological processes. The parameters of the modified SWAT2009 model were calibrated using data on maize for seed from 5 HRUs and validated using data from 7 HRUs. The results show that daily evapotranspiration, shoot dry matter and leaf area index estimates from the modified SWAT2009 model were satisfactory at the HRU level, and the RMSE values associated with daily evapotranspiration, shoot dry matter, and leaf area index were reduced by 17.0%, 1.6%, and 71.2%, compared with SWAT2009. Thus, the influences of various optimal management practices on the hydrology of agricultural watersheds can be effectively assessed using the modified model. 
Keywords:calibration; irrigation district; evapotranspiration; crop growth; validation