SWAT Literature Database for Peer-Reviewed Journal Articles

Title:Integrated modeling of conjunctive water use in a canal-well irrigation district in the lower Yellow River Basin, China 
Authors:Liu, L., Y. Cui and Y. Luo 
Journal:Journal of Irrigation and Drainage Engineering 
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URL (non-DOI journals): 
Model:SWAT (modified) 
Broad Application Category:hydrologic only 
Primary Application Category:model interface 
Secondary Application Category:impoundment and/or wetland effects 
Watershed Description:Liuyuankou Irrigation District located in the Huiji River watershed within the larger Huaihe River Basin in eastern China 
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Abstract:The Yellow River Basin is a closed basin under serious stress with dense population, intensive agriculture, and excess water withdrawals. Low water use efficiency and groundwater overexploitation are threatening the sustainable development of the basin. This paper describes a coupled modeling approach to analyze sustainable management strategies in surface–groundwater conjunctive use irrigation district in the lower Yellow River Basin. We first established an appropriate irrigation schedule and an optimal range of groundwater levels using SWAP􀋄Soil Water Atmosphere Plant􀋅 model with data from an irrigation experiment station. The integrated surface water and groundwater model was then set up using modified SWAT2000 (Soil and Water Assessment Tool) and MODFLOW models. The two models were connected through standardized simulation grids and calibrated using field measurements. Five scenarios, which were designed according to different well-canal irrigation supply ratios and the irrigation schedule determined by SWAP, were tested using the integrated modeling approach. It is proved that conjunctive management strategies of canal diversions and tube-well pumps can effectively reduce phreatic evaporation losses, increase water use efficiency, and sustain groundwater levels while maintaining crop yields at current levels. 
Keywords:irrigation; water management; SWAP; SWAT2000; MODFLOW; Yellow River; conjunctive use