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Two-dimensional continuous simulation of watershed processes using a time-area hydrology model, HYSTAR
Authors: Young Gu Her,
Identifier: CSBE21587
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Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » Special Session on Hydrological Modelling: a Tool for Resilient and Sustainable Agriculture
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Description: A time-area method was reformulated as a way to predict runoff hydrographs by explicitly describing spatiotemporally varied watershed processes. In a new hydrologic model, HYdrology Simulation using Time-ARea method (HYSTAR), the method was integrated with a simple routing scheme and modified curve number methods to simulate watershed dynamics. This study evaluated the applicability of the time-area model in predicting the runoff processes of four study watersheds that have different landscapes, including a rolling upland (Virginia), a shallow forest wetland (Florida), and mountain forests (Brazil and South Korea). We also assessed the efficiency of parallelizing the time-area routing methods with multiple processors on a common personal computer. For demonstrating the utility of the model and further evaluating the soundness of the modeling strategy, hydrologically sensitive areas identified using model outputs were compared with the maps of topographic wetness indices. Results showed the potential of the method as a tool for watershed management planning. Finally, this study discussed the limitations and future improvement directions of the model.
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Date: 2021-06-11
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Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: SPECIAL SESSION Hydrological modelling II
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Type: Text.Abstract
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Publication type: Presentation
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Coverage: United States
Language 1: en
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Rights: Canadian Society for Bioengineering
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DOI:
Description: A time-area method was reformulated as a way to predict runoff hydrographs by explicitly describing spatiotemporally varied watershed processes. In a new hydrologic model, HYdrology Simulation using Time-ARea method (HYSTAR), the method was integrated with a simple routing scheme and modified curve number methods to simulate watershed dynamics. This study evaluated the applicability of the time-area model in predicting the runoff processes of four study watersheds that have different landscapes, including a rolling upland (Virginia), a shallow forest wetland (Florida), and mountain forests (Brazil and South Korea). We also assessed the efficiency of parallelizing the time-area routing methods with multiple processors on a common personal computer. For demonstrating the utility of the model and further evaluating the soundness of the modeling strategy, hydrologically sensitive areas identified using model outputs were compared with the maps of topographic wetness indices. Results showed the potential of the method as a tool for watershed management planning. Finally, this study discussed the limitations and future improvement directions of the model.
Keywords:
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2021-06-11
Technical field:
Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: SPECIAL SESSION Hydrological modelling II
Other information:
Type: Text.Abstract
Format:
Publication type: Presentation
Source:
Relation:
Coverage: United States
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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