Embedding isochronous cells overland flow module into MODFLOW |
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| Authors: | Bo Zhang Mei Hong Zuhao Zou Tian‐Chyi Jim Yeh Pin Cheng |
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| Institution: | 1. Key Lab of Groundwater Resources and Environment, Ministry of Education, , Beijing, China;2. College of Environment and Resource, Jilin University, , Changchun, China;3. China Institute of Water Resource and Hydropower Research, , Beijing, China;4. Department of Hydrology and Water Resources, University of Arizona, , Tucson, AZ, USA |
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| Abstract: | This study integrates a simple overland flow module (isochronous cells model) with the river module of MODFLOW such that temporal and spatial interactions between stream flow and groundwater can be simulated using net rainfall data of a watershed. The isochronous cells model is an efficient travel time runoff approach based on geographic information system (GIS) that considers both spatial and temporal variations of net rainfall through hill slope of the watershed. This overland module is easily coupled with MODFLOW river routing module. Specifically, the stream flow from the isochronous cells model is directly assigned to both sides of river cells of the MODFLOW model. Such an integration of MODFLOW and isochronous cells model is especially useful in watersheds where river flow data are limited. The feasibility of this integrated model was demonstrated using a case study in the middle and downstream regions of the Yitong River watershed, China. Copyright © 2012 John Wiley & Sons, Ltd. |
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| Keywords: | groundwater surface water coupled model MODFLOW overland flow |
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