Integrated sediment transport process modeling by coupling Soil and Water Assessment Tool and Environmental Fluid Dynamics Code. (June 2019)

• Record Type: Journal Article
• Authors: Shin, Satbyeol; Her, Younggu; Song, Jung-Hun; Kang, Moon-Seong
• Is Part Of: Environmental modelling & software. Volume 116(2019)
• Page Start: 26
• Page End: 39
• Publication Date: 2019-06
• Subjects: Sediment transport -- Reservoir sedimentation -- Model coupling -- SWAT -- EFDC -- Uncertainty; Environmental monitoring -- Computer programs -- Periodicals; Ecology -- Computer simulation -- Periodicals; Digital computer simulation -- Periodicals; Computer software -- Periodicals; Environmental Monitoring -- Periodicals; Computer Simulation -- Periodicals; Environnement -- Surveillance -- Logiciels -- Périodiques; Écologie -- Simulation, Méthodes de -- Périodiques; Simulation par ordinateur -- Périodiques; Logiciels -- Périodiques; Computer software; Digital computer simulation; Ecology -- Computer simulation; Environmental monitoring -- Computer programs; Periodicals; Electronic journals; 363.70015118
• DOI: 10.1016/j.envsoft.2019.02.002
• Languages: English
• ISSNs: 1364-8152

Abstract

Abstract: Reservoir sedimentation is a major environmental issue, and integrated sediment modeling provides a holistic picture of the sediment transport processes in watershed management planning. This study proposes a sediment modeling framework by coupling a watershed loading model, Soil and Water Assessment Tool (SWAT), with a receiving water-body model, Environmental Fluid Dynamics Code (EFDC). In the proposed framework, upstream sediment load estimates made by SWAT are dynamically linked to EFDC to predict sediment deposition in a reservoir, facilitating multiple model runs required for what-if scenario analyses in developing sediment management plans and for optimization using sampling-based search algorithms. The modeling framework was applied to predict the spatial distributions of sediment depositions in an agricultural reservoir and quantify their uncertainty. This article introduces how the two models, SWAT and EFDC, are linked for integrated sediment modeling and demonstrates how the proposed framework can be applied in a case study. Highlights: We propose a coupled modeling tool for integrated sediment transport analysis. The proposed tool links SWAT outputs to the EFDC boundary conditions. The tool facilitates iterative sediment transport modeling practices. The spatiotemporal dynamics of reservoir sedimentation are illustrated using the tool. The quantification of flow, sediment load, and deposition uncertainty is demonstrated.