Relationship of Rainfall and Flood Return Periods through Hydrologic and Hydraulic Modeling
In order to examine the relationship between rainfall return periods and flood return periods, the design storm approach is compared to the rainfall–runoff continuous simulation and flood frequency analysis approach. The former was based on rainfall frequency analysis and event-based hydrological si...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/22/3618 |
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| author | Harris Vangelis Ioanna Zotou Ioannis M. Kourtis Vasilis Bellos Vassilios A. Tsihrintzis |
| author_facet | Harris Vangelis Ioanna Zotou Ioannis M. Kourtis Vasilis Bellos Vassilios A. Tsihrintzis |
| author_sort | Harris Vangelis |
| collection | DOAJ |
| description | In order to examine the relationship between rainfall return periods and flood return periods, the design storm approach is compared to the rainfall–runoff continuous simulation and flood frequency analysis approach. The former was based on rainfall frequency analysis and event-based hydrological simulations, while the latter was based on continuous hydrological simulations and flood frequency analysis. All hydrological simulations were undertaken employing the HEC-HMS software. For the rainfall frequency analysis, the Generalized Extreme Value (GEV) probability distribution was used. For the flood frequency analysis, both the Extreme Value Type I (Gumbel) and GEV theoretical distributions were used and compared to each other. Flood hazard (inundation depth, flow velocities and flood extent) was estimated based on hydrodynamic simulations employing the HEC-RAS software. The study area was the Pineios catchment, upstream of Larissa city, Greece. The results revealed that the assumption of equivalent return periods of rainfall and discharge is not valid for the study area. For instance, a 50-year return period flood corresponds to a rainfall return period of about 110 years. Even if flow measurements are not available, continuous simulation based on re-analysis datasets and flood frequency analysis may be alternatively used. |
| first_indexed | 2024-03-09T17:56:28Z |
| format | Article |
| id | doaj.art-b3c66273e33d4fd7a91b741068dff5f5 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T17:56:28Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-b3c66273e33d4fd7a91b741068dff5f52023-11-24T10:20:10ZengMDPI AGWater2073-44412022-11-011422361810.3390/w14223618Relationship of Rainfall and Flood Return Periods through Hydrologic and Hydraulic ModelingHarris Vangelis0Ioanna Zotou1Ioannis M. Kourtis2Vasilis Bellos3Vassilios A. Tsihrintzis4Centre for the Assessment of Natural Hazards and Proactive Planning & Laboratory of Reclamation Works and Water Resources Management, School of Rural, Surveying and Geoinformatics Engineering, National Technical University of Athens, 9 Heroon Polytechniou St., Zographou, 15780 Athens, GreeceCentre for the Assessment of Natural Hazards and Proactive Planning & Laboratory of Reclamation Works and Water Resources Management, School of Rural, Surveying and Geoinformatics Engineering, National Technical University of Athens, 9 Heroon Polytechniou St., Zographou, 15780 Athens, GreeceCentre for the Assessment of Natural Hazards and Proactive Planning & Laboratory of Reclamation Works and Water Resources Management, School of Rural, Surveying and Geoinformatics Engineering, National Technical University of Athens, 9 Heroon Polytechniou St., Zographou, 15780 Athens, GreeceLaboratory of Ecological Engineering and Technology, Department of Environmental Engineering, Democritus University of Thrace, 67100 Xanthi, GreeceCentre for the Assessment of Natural Hazards and Proactive Planning & Laboratory of Reclamation Works and Water Resources Management, School of Rural, Surveying and Geoinformatics Engineering, National Technical University of Athens, 9 Heroon Polytechniou St., Zographou, 15780 Athens, GreeceIn order to examine the relationship between rainfall return periods and flood return periods, the design storm approach is compared to the rainfall–runoff continuous simulation and flood frequency analysis approach. The former was based on rainfall frequency analysis and event-based hydrological simulations, while the latter was based on continuous hydrological simulations and flood frequency analysis. All hydrological simulations were undertaken employing the HEC-HMS software. For the rainfall frequency analysis, the Generalized Extreme Value (GEV) probability distribution was used. For the flood frequency analysis, both the Extreme Value Type I (Gumbel) and GEV theoretical distributions were used and compared to each other. Flood hazard (inundation depth, flow velocities and flood extent) was estimated based on hydrodynamic simulations employing the HEC-RAS software. The study area was the Pineios catchment, upstream of Larissa city, Greece. The results revealed that the assumption of equivalent return periods of rainfall and discharge is not valid for the study area. For instance, a 50-year return period flood corresponds to a rainfall return period of about 110 years. Even if flow measurements are not available, continuous simulation based on re-analysis datasets and flood frequency analysis may be alternatively used.https://www.mdpi.com/2073-4441/14/22/3618design storm approachintensity–duration–frequency (IDF) curvesevent-based hydrologic simulationcontinuous simulationflood frequency analysisflood hazard |
| spellingShingle | Harris Vangelis Ioanna Zotou Ioannis M. Kourtis Vasilis Bellos Vassilios A. Tsihrintzis Relationship of Rainfall and Flood Return Periods through Hydrologic and Hydraulic Modeling Water design storm approach intensity–duration–frequency (IDF) curves event-based hydrologic simulation continuous simulation flood frequency analysis flood hazard |
| title | Relationship of Rainfall and Flood Return Periods through Hydrologic and Hydraulic Modeling |
| title_full | Relationship of Rainfall and Flood Return Periods through Hydrologic and Hydraulic Modeling |
| title_fullStr | Relationship of Rainfall and Flood Return Periods through Hydrologic and Hydraulic Modeling |
| title_full_unstemmed | Relationship of Rainfall and Flood Return Periods through Hydrologic and Hydraulic Modeling |
| title_short | Relationship of Rainfall and Flood Return Periods through Hydrologic and Hydraulic Modeling |
| title_sort | relationship of rainfall and flood return periods through hydrologic and hydraulic modeling |
| topic | design storm approach intensity–duration–frequency (IDF) curves event-based hydrologic simulation continuous simulation flood frequency analysis flood hazard |
| url | https://www.mdpi.com/2073-4441/14/22/3618 |
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