Low-flow frequency analysis at ungauged sites based on regionally estimated streamflows
| Autor: | Taha B. M. J. Ouarda, Fateh Chebana, Ana Isabel Requena |
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| Rok vydání: | 2018 |
| Předmět: |
Hydrology
Frequency analysis Flood myth 0208 environmental biotechnology Flood forecasting 02 engineering and technology 020801 environmental engineering law.invention Hydrology (agriculture) Bayesian information criterion law Streamflow 100-year flood Linear regression Environmental science Water Science and Technology |
| Zdroj: | Journal of Hydrology. 563:523-532 |
| ISSN: | 0022-1694 |
| DOI: | 10.1016/j.jhydrol.2018.06.016 |
| Popis: | Estimation of flood events at ungauged sites is often performed through regional flood frequency analysis (RFFA). RFFA uses the available information at gauged sites to estimate the desired design events at the ungauged site. These regional methods are based on a prior aggregation of the hydrological information at the gauged sites, which implies loss of information. In the present study, a different approach or path for conducting RFFA is presented. First, the daily streamflow series at the ungauged site is regionally estimated from daily information at the gauged sites through a regional flow duration curve approach. Then, a local flood frequency analysis is performed on the extracted maximum peak flow series. The proposed approach, referred to as regional streamflow-based frequency analysis (RSBFA), is applied to a case study in the province of Quebec, Canada. Results indicate that the performance of the RSBFA approach is comparable to traditional methods. However, the proposed method has the a... |
| Databáze: | OpenAIRE |
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