Embedding isochronous cells overland flow module into modflow

Bo Zhang, Mei Hong, Zuhao Zou, Tian Chyi Jim Yeh, Pin Cheng

Research output: Contribution to journalArticle

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.

Original languageEnglish (US)
Pages (from-to)3833-3841
Number of pages9
JournalHydrological Processes
Volume27
Issue number26
DOIs
StatePublished - Dec 30 2013

Keywords

  • Coupled model
  • Groundwater
  • MODFLOW
  • Overland flow
  • Surface water

ASJC Scopus subject areas

  • Water Science and Technology

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