Comparative analysis of routed flood frequency for reservoirs in parallel incorporating bivariate flood frequency and reservoir operation
Abstract Flood frequency is commonly defined by natural flood characteristics such as flood peak, volume and duration. However, for floods at reservoir site, reservoir operation will significantly alter the natural flood process and flood frequency. This article presents a framework of routed flood...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-09-01
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| Series: | Journal of Flood Risk Management |
| Subjects: | |
| Online Access: | https://doi.org/10.1111/jfr3.12705 |
| _version_ | 1819112510464196608 |
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| author | Ting Zhou Juliang Jin |
| author_facet | Ting Zhou Juliang Jin |
| author_sort | Ting Zhou |
| collection | DOAJ |
| description | Abstract Flood frequency is commonly defined by natural flood characteristics such as flood peak, volume and duration. However, for floods at reservoir site, reservoir operation will significantly alter the natural flood process and flood frequency. This article presents a framework of routed flood frequency which incorporates multi‐reservoir flood correlation and considers the effect of reservoir operation. Aggregated flood volume during reservoir operation has been adopted as indicator for the routed flood frequency curve (RFFC). A comparison has been made with a 62‐year series of historic flood inflows observed at two parallel reservoirs in Eastern China. By comparing the derived RFFC with traditional univariate and bivariate flood frequency results, it can be seen that the RFFC results provide a reasonable estimation of flood frequency. A sensitivity analysis indicated that the reservoir maximum release allocation has significant impact on RFFC, and a balanced allocation of flood peak can greatly decrease the overtopping risk. The “peak–peak” contour lines of the RFFC show that there are different flood combination zones which need different operation strategies in real‐time operation. Our findings improve the understanding of flood frequency concepts when considering the impact of reservoir operation and provide reference to manage real‐time reservoir operation. |
| first_indexed | 2024-12-22T04:14:39Z |
| format | Article |
| id | doaj.art-0c8d83d4fe89481d940e0c097a0a01d0 |
| institution | Directory Open Access Journal |
| issn | 1753-318X |
| language | English |
| last_indexed | 2024-12-22T04:14:39Z |
| publishDate | 2021-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Flood Risk Management |
| spelling | doaj.art-0c8d83d4fe89481d940e0c097a0a01d02022-12-21T18:39:26ZengWileyJournal of Flood Risk Management1753-318X2021-09-01143n/an/a10.1111/jfr3.12705Comparative analysis of routed flood frequency for reservoirs in parallel incorporating bivariate flood frequency and reservoir operationTing Zhou0Juliang Jin1College of Engineering Anhui Agricultural University Hefei Anhui Province ChinaDepartment of Hydraulic and Hydropower Engineering Hefei University of Technology Hefei Anhui Province ChinaAbstract Flood frequency is commonly defined by natural flood characteristics such as flood peak, volume and duration. However, for floods at reservoir site, reservoir operation will significantly alter the natural flood process and flood frequency. This article presents a framework of routed flood frequency which incorporates multi‐reservoir flood correlation and considers the effect of reservoir operation. Aggregated flood volume during reservoir operation has been adopted as indicator for the routed flood frequency curve (RFFC). A comparison has been made with a 62‐year series of historic flood inflows observed at two parallel reservoirs in Eastern China. By comparing the derived RFFC with traditional univariate and bivariate flood frequency results, it can be seen that the RFFC results provide a reasonable estimation of flood frequency. A sensitivity analysis indicated that the reservoir maximum release allocation has significant impact on RFFC, and a balanced allocation of flood peak can greatly decrease the overtopping risk. The “peak–peak” contour lines of the RFFC show that there are different flood combination zones which need different operation strategies in real‐time operation. Our findings improve the understanding of flood frequency concepts when considering the impact of reservoir operation and provide reference to manage real‐time reservoir operation.https://doi.org/10.1111/jfr3.12705copula distributionovertopping riskparallel reservoirsreservoir flood control operationrouted flood frequency curve |
| spellingShingle | Ting Zhou Juliang Jin Comparative analysis of routed flood frequency for reservoirs in parallel incorporating bivariate flood frequency and reservoir operation Journal of Flood Risk Management copula distribution overtopping risk parallel reservoirs reservoir flood control operation routed flood frequency curve |
| title | Comparative analysis of routed flood frequency for reservoirs in parallel incorporating bivariate flood frequency and reservoir operation |
| title_full | Comparative analysis of routed flood frequency for reservoirs in parallel incorporating bivariate flood frequency and reservoir operation |
| title_fullStr | Comparative analysis of routed flood frequency for reservoirs in parallel incorporating bivariate flood frequency and reservoir operation |
| title_full_unstemmed | Comparative analysis of routed flood frequency for reservoirs in parallel incorporating bivariate flood frequency and reservoir operation |
| title_short | Comparative analysis of routed flood frequency for reservoirs in parallel incorporating bivariate flood frequency and reservoir operation |
| title_sort | comparative analysis of routed flood frequency for reservoirs in parallel incorporating bivariate flood frequency and reservoir operation |
| topic | copula distribution overtopping risk parallel reservoirs reservoir flood control operation routed flood frequency curve |
| url | https://doi.org/10.1111/jfr3.12705 |
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