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ARS Home » Southeast Area » Oxford, Mississippi » National Sedimentation Laboratory » Watershed Physical Processes Research » Research » Publications at this Location » Publication #321473
Title: GIS-based channel flow and sediment transport simulation using CCHE1D coupled with AnnAGNPS

Author
item SHEN, DAYONG - University Of Mississippi
item JIA, YAFEI - University Of Mississippi
item ALTINAKAR, MUSTAFA - University Of Mississippi
item Bingner, Ronald - Ron

Submitted to: Journal of Hydraulic Engineering
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/17/2016
Publication Date: 4/29/2016
Citation: Shen, D., Jia, Y., Altinakar, M., Bingner, R.L. 2016. GIS-based channel flow and sediment transport simulation using CCHE1D coupled with AnnAGNPS. Journal of Hydraulic Engineering. pp. 1-8 doi. 10.1080/00221686.2016.1168883.

Interpretive Summary: Effective evaluation of conservation practices placed onto fields and within streams of a watershed requires application of integrated upland and channel technology. A comprehensive channel evolution model for watershed channel networks developed by the University of Mississippi has been enhanced to directly link with USDA watershed models to provide the source of pollutant loads entering the stream system. The USDA-ARS Goodwin Creek Watershed was used to validate the model linkages with reasonable estimates of runoff and sediment load from 1982-1991. Model application and database development has been incorporated into a user-interface that links with geographic information systems data sources to provide an efficient tool for evaluation of conservation practices by action agencies, such as NRCS.

Technical Abstract: CCHE1D (Center for Computational Hydroscience and Engineering 1-Dimensional model) simulates unsteady free-surface flows with nonequilibrium, nonuniform sediment transport in dendritic channel networks. Since early 1990’s, the model and its software packages have been developed and continuously maintained and upgraded. Applications show that CCHE1D is good for the assessment of the performance of BMPs (Best-Management Practices) in a watershed when coupled with watershed modeling. In this study CCHE1D V3.0 was integrated with the watershed model AnnAGNPS (Annualized AGricultural Non-Point Source model) and the CCHE1D ArcGIS control module was developed to replace the CCHE1D ArcView GIS control module resulting in a new version, CCHE1D V3.2. A case study was performed using the USDA-ARS (U.S. Department of Agriculture Agricultural Research Service) Goodwin Creek Watershed that shows time-series flow discharges and observed annual sediment accumulation can be well simulated by CCHE1D coupled with AnnAGNPS.